SB-1000 Balance Control
Operation Manual
LL-1100

Rev. 1.3

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Operation and Specification Manual
for theSB-1000 Balance Control

LL- 1100Manual Revision # 1.3
For Firmware version 1.16
© 2023 Accretech SBS, Inc.

Corporate Offices
2451 NW 28th Avenue
Portland OR 97210 USA
sales@accretechSBS.com
Tel: +1 503.595.4270
Fax: +1 503.227.5040

https://accretechsbs.com/

SBS System – SB-1000 Operation

Benefits of SBS SB-1000 Balance Control:Enhanced digital electronic design with increased operating life and reliability

Easy to install and operateIncreases throughput by saving setup timeImproves part quality by automatically balancing to 0.02 micronLonger life for grinding wheels, dressing wheels and spindle bearing

Icon based User interface for international adaptability

Backed by world-class SBS customer serviceWorks with existing SBS installations

SBS System – SB-1000 Operation

SBS System – SB-1000 Operation

Table of Contents
System Purpose ........................................................................................................................ 1
Operator Safety Summary ........................................................................................................ 1
Balance Theory ......................................................................................................................... 2
Automatic Balance Overview ................................................................................................... 2
Manual Balance Overview ........................................................................................................ 3
Environmental Considerations ................................................................................................ 3
Other Sources of Vibration ....................................................................................................................... 3
Machine Condition .................................................................................................................................... 3

System Installation ................................................................................................................... 4
Control Unit ............................................................................................................................................... 4
Rear Panel Connections ........................................................................................................................... 4
Vibration Sensor Location ......................................................................................................................... 5External Balancer/ Adaptors – Automatic mode ....................................................................................... 5
Internal Balancers – Automatic mode ....................................................................................................... 7
RPM Sensor – Manual mode.................................................................................................................... 7

Control Unit Operating Instructions ........................................................................................ 8
Front Panel Controls ................................................................................................................................. 8

Startup and Operation .............................................................................................................. 9Power-On Display ..................................................................................................................................... 9
Multiple Machine Operation ...................................................................................................................... 9Main Screen ............................................................................................................................................ 10

Preparing to Set Operating Parameters ................................................................................ 11
Background Vibration ............................................................................................................................. 11
Verifying Balancer Sizing – Automatic Balance Mode ........................................................................... 11
Limit ........................................................................................................................................................ 11
Tolerance ................................................................................................................................................ 11
Critical Vibration ...................................................................................................................................... 11
Timing of Auto-Balance .......................................................................................................................... 12

Setup Overview ....................................................................................................................... 12
Select Balance Mode (Automatic or Manual) ......................................................................................... 12
Setup Mode Operation ............................................................................................................................ 12

Automatic Balance Mode........................................................................................................ 13
Setup Automatic Mode ........................................................................................................................... 13
Automatic Balance Operation ................................................................................................................. 14
Manual Weight Movement - Automatic Balance Mode .......................................................................... 14

Manual Balance Mode............................................................................................................. 15
Setup Manual Mode ................................................................................................................................ 15
Manual Balance Overview ...................................................................................................................... 16
Trim Phase.............................................................................................................................................. 16
Single Point Manual Balance .................................................................................................................. 17
2 and 3 Weight Manual Balance ............................................................................................................. 19
Fixed Position Manual Balance .............................................................................................................. 21

Hardwire Interface ................................................................................................................... 23
Hardwire Interface Overview .................................................................................................................. 23
Input Pin Names and Functions.............................................................................................................. 24
Output Pin Names and Functions ........................................................................................................... 24

CNC/System Timing Diagram ................................................................................................. 25
System Maintenance............................................................................................................... 26
Collector Maintenance ............................................................................................................................ 26
SBS Return/Repair Policy....................................................................................................................... 26
Balancer Cable (SB-48xx/SB-48xx-V) .................................................................................................... 27
RPM Sensor (SB-1816) .......................................................................................................................... 27
Vibration Sensor (SB-14xx) .................................................................................................................... 27

Trouble Shooting Guide ......................................................................................................... 28
Error Indications ..................................................................................................................... 29
SBS System – SB-1000 Operation

Factory defaults ...................................................................................................................................... 30

Appendix A: Specifications .................................................................................................... 31
Appendix B: Replacement Parts List ..................................................................................... 32
Support .................................................................................................................................... 32

SBS System – SB-1000 Operation

System Purpose
In order for the wheel of a grinding machine to accurately cut, produce smooth surface finishes, and generatecorrect part geometry, it is necessary to prevent vibration in the grinding process. A primary cause ofvibration during grinding is the existence of imbalance in the grinding wheel. This is often due to theheterogeneous nature of the grinding wheel, which contains great numbers of unevenly distributed grains,causing intrinsic imbalance. This imbalance can be compounded by eccentric mounting of the wheel,varying width of the wheel, imbalance in the arbor, and coolant absorption into the wheel. Considering allthese factors, even a carefully established initial balance will not last long. Furthermore, due to wear anddressing, the rotational dynamics of a grinding wheel are always changing. For these reasons, dynamicbalancing of grinding wheels has long been recognized as an important step in the production process.
The SBS Balance System has been developed to provide dynamic balancing for grinding machine operatorswith the following objectives in mind:• Ease and Usefulness of Operation• Maximum Grinding Machine Efficiency• Minimal Installation Requirements• Attractive Purchase Price

Operator Safety Summary
This summary contains safety information necessary for operation of the SBS Balance System for grinding
machines. Specific warnings and cautions are found throughout the Operation Manual where they apply but
may not appear in this summary. Before installing and operating the SBS Balance System, it is necessary toread and understand the entirety of this manual. After reading the Operation Manual, contact Accretech
SBS, Inc. for any additional technical assistance required.
Warning: Observe all safety precautions for operation of your grinding machinery. Do not
operate your equipment beyond safe balance limits.
Warning: Failure to properly attach SBS Balance System components to the grinding
machine spindle, including the proper use of provided adaptor lock screws, will
result in safety hazard during machine operation.
Warning: Never operate a grinding machine without all proper safety guarding in place.
Caution:To avoid equipment damage, make sure the line voltage is within the range
specified for the system (see specification section).

Caution:Only qualified service technicians should attempt to service the SBS Balance
System. To avoid electric shock, do not remove the cover of the Control Unit,or remove cables with power connected.

SBS System – SB-1000 Operation1

Balance Theory
The SBS Balance System operates on the principle of mass compensation for any given grinding wheel’s
imbalance. The Intrinsic Imbalance of a grinding wheel is equal to its mass multiplied by “e”, the distance
between the wheel’s center of mass and the wheel’s center of rotation.
Intrinsic
Imbalance= e ( Wheel Mass )Measured
Imbalance

Balance= r ( Weight
Mass )= Center Rotation to Balance Mass

= Center Rotation to Wheel Center of Mass

The imbalance of a grinding wheel is determined in practice by use of the Measured Imbalance of the wheel.
The Measured Imbalance is equal to the product of the mass of an attached balance weight, located tobalance the grinding wheel, multiplied by “r” the distance between that weight’s center of mass and thegrinding wheel’s center of rotation. In both cases, the imbalance is given in terms of a mass multiplied by adistance, with (grams)(centimeters) being the units used for reference by the system.
The SBS system with SB-1000 control can operate in either Automatic Balance mode, or Manual Balancemode in order to correct for wheel imbalance.

Automatic Balance Overview
In automatic balance mode the SBS Balance
System uses two movable weighted masses
located in the Balancer to correct for various andchanging imbalances which occur on the grinding
machine. The balance weights are driven by hightorque electrical motors through a precision gear
train and can be independently positioned tocompensate for any imbalance within thespecifications of the system.
The automatic balance cycle is complete when
the balance weights are positioned so thatminimum vibration is achieved. Figure 2a shows an unbalanced rotating grinding wheel, with an SBSBalancer installed. The imbalance is represented by the white dot located on the circumference of the wheel,
while the two black dots represent the weights located in the balancer. By incrementally repositioning theweights, a triangulation is achieved which cancels out the imbalance, as shown in Figure 2b.
2a - Unbalanced

The system consists of the
Balancer, a Balancer Cable, aVibration Sensor, and the SB1000 Control Unit. Imbalance isexpressed as spindle vibration
detected from the grinding
machine by the sensor. The
vibration signal from the sensor istransmitted to the control unit,

2

SBS System – SB-1000 Operation

2b - Balanced

Input
SignalMotor Drive
Signals

Balance Control Unit
SensorBalancerwhich filters the signal by RPM. When an Auto-balance cycle is initiated, the control unit drives the twobalancer weights in the direction that reduces the amplitude of the incoming vibration signal.

Manual Balance Overview
The SB-1000 control can also be configured to be used as an aid in performing manual balance operations,where the cost of a fully automatic system is not warranted. The SBS balancer is not needed when thesystem is used in manual balance mode. Instead, an RPM sensor is used to monitor the RPM and phase
position of the rotating spindle. An RPM signal not time synchronized to a physical location on the spindle
assembly (from the motor or other source) is not adequate to achieve balance. An RPM sensor with a fixed
position trigger point must be used to allow the phase position of the spindle to be determined.
Balance weights are either moved or added on the grinder manually by the operator as needed to achievebalance. The SB-1000 assists the operator by analyzing the current balance condition of the grinder andshowing the operator how to position weights to achieve balance.

Environmental Considerations
The SBS Balance System is designed to correct for grinding wheel imbalance and its detrimental effects on
quality of surface finish, part geometry, and wheel and machine bearing life. The system cannot correct forother environmental sources of vibration on the machine. This section is intended as a discussion of somecommon environmental problems which may influence grinding quality.
Other Sources of Vibration
A common source of vibration is adjacent machinery. Grinding machines should be properly isolation
mounted if vibration-producing machinery is operating nearby. Other sources of vibration may also include
components mounted on the machine itself, such as pumps, motors, drives, etc.
The SBS Balance System may not operate efficiently under the influence of some external vibrations. The
system filters the vibration signal it detects from the grinding machine by the frequency of the spindle RPM.
Vibrations occurring at frequencies other than that of the rotating wheel will be ignored by the system.
However, if adjacent machinery or auxiliary equipment on the grinder is operating near the same frequency
as the spindle rotation, the system will not be able to distinguish between vibrations occurring from wheel
imbalance and those originating elsewhere.
An excellent test for environmental vibration is to monitor the vibration level on the grinding machine while
the spindle is not turning. The vibration level should be checked in various locations on the grinding
machine, but in particular at the location the vibration sensor is to be mounted. All surrounding equipment,
including any auxiliary pumps or attachments on the grinding machine should be operating during this test.
The SBS Balance System can help perform this test but cannot remove these vibrations (see: Background
Vibration section).
Machine Condition

Grinding machine condition is an important factor in determining the minimum balance level that the
SBS Balance System can achieve. The spindle should be balanced, as well as all components in thespindle drive train (i.e., belts, pulleys, motor, etc.). The balance system can be used to readily determine
if any significant imbalance exists in the machine itself. Simply use the same method as describedabove for checking environmental vibration, except test with the spindle running and with no wheel
mounted. The SBS Balance System cannot remove vibration resulting from machine condition
problems.

SBS System – SB-1000 Operation

3

System Installation
Control Unit
The SBS Control Unit should be mounted in a location allowing observation of the display by the machine
operator. A variety of mounting hardware is available for installation on vertical surfaces or for rack
mounting.
Rear Panel Connections
The following connections are located on the rear panel of the Control Unit.
2

3

1

6

4

4

5

1)

POWER SUPPLY. Terminal block connection for power input. 22 VDC to 26 VDC, 3.5A
max at 22 VDC. There is no power switch on the SB-1000, as it is designed for constantoperation. If power must be disconnected by the user, a separate switch on the power line
may be installed at installation.
Caution: Before applying power to the Control, make sure the supply voltage is within
specified range.

2)

Earth Ground. Connect this M5 stud to the GND.

3)

Optional CNC Interface. Standard DB-25 connector for connecting to a grinding machine
controller. A complete description of this relay-based interface is given in the “Hardwire
Interface” section

4)

Balancer/RPM Sensor (labeled 1). 12-pin DIN connection to either the SBS Balancer cable(Automatic Balance mode) or to the RPM Sensor (Manual Balance mode).

5)

Vibration Sensor (labeled 2). 5-pin DIN connection to Vibration sensor.

6)

USB connection. Allows USB 2.0 connection to host computer for Firmware update of thecontrol only. Latest firmware for the control and update instructions are available on the SBS
website https://accretechsbs.com/.

SBS System – SB-1000 Operation

Vibration Sensor Location
The Vibration Sensor can be mounted on the grinding machine using the magnetic mount provided, or
permanent stud mount. The magnetic mount should be used during the initial system start-up until a good
permanent location is found on the grinding machine for the sensor. The sensor can then be permanently
stud mounted at that location, using an M5 set screw. A machined flat should be supplied at the mounting
location when stud mounting the sensor.
The location and installation of the sensor are critical for successful operation of the SBS Balance System.
Because of differing machine characteristics, Vibration Sensor location is specific to the machine model.
There are two general principles that should assist in finding a proper sensor location for your grinding
machine.
1.
Locate the Sensor in the same direction as the centerline between the grinding wheel and theworkpiece. The best place to start is a
Sensor Mounted inflat machined surface on the spindle
Directionof Workpiece
housing over the bearing closest to theContact
wheel and perpendicular to the spindle’s
centerline. A vertical mounting surface ispreferable on most cylindrical grinding
machines because the sensor is in linewith the grinding wheel and theworkpiece. For this same reason on
surface grinders and creep feed grinders, ahorizontal mounting surface is generally
best. Although the balancer itself may be
mounted either on the wheel or pulley end
Cylindrical or
Surface or Creepof the machine, the Sensor should always
Centerless Grinders
Feed Grinders
Workpiece
be aligned at the wheel end of themachine.
2.
Locate the sensor on a rigid part of the machine structure, where vibration from the spindle will
be accurately transmitted. On some machines the wheel guard can be a good location to mount the sensor,
if it is heavy enough and rigidly attached to the spindle housing. The balance system relies on vibration
signals received from the Vibration Sensor to accurately display the current vibration level in peak-to-peakunits, and to balance the grinding wheel. The system employs narrow bandwidth filters that prevent
vibration at non-spindle frequencies from being detected. However, in applications where the motor or othermachine components are running at the same speed or frequency as the spindle, interfering vibrations may
result. Careful experimentation with the sensor’s location minimizes sources of interference.
External Balancer/ Adaptors – Automatic mode
The Balancer is mounted to the machine spindle with the provided adaptor. The mounting
adaptor is specifically designed to accommodate a particular machine’s spindle
configuration and varies in design. In general, the adaptor consists of two parts. The Adaptor Nut mounts
on the grinding machine, usually replacing the spindle nut of the machine, either on the wheel or pulley endof the spindle. The Adaptor Flange bolts to the Balancer, and threads onto the installed Adaptor Nut.
Appropriate wrenches are supplied for both parts. Use of a lubricating compound between the Balancer andMounting Adapter is recommended to ensure ease of future disassembly.
Lock Screws are a feature of many adaptor designs, where required by high machine speeds or machine
spindle braking. These consist of M6 socket set screws in the face of the Adaptor Nut, and M5 socket set
screws in the outer diameter of the Adaptor Flange. These lock screws should be loosened prior to adapter
removal or disassembly.
SBS System – SB-1000 Operation

5

Warning!! - All lock screws must be properly secured each time the Adaptor Nut or Adaptor Flange isinstalled to prevent the assembly from coming loose during operation of the grinder. Screws should be
wrench tight (torque provided by a standard hand wrench, without hammer or other tools).
Follow this assembly procedure to ensure
proper mounting of Adaptor Nuts and Flanges
were lock screws are part of the adaptor
design:Mounting
Adaptor Nut

Mounting
AdaptorFlangeExternal
Balancer

1. Loosen all lock screws before
assembly. The engagement end ofthese screws should be below flushwith the face of the adaptor/flange
where they exit.
2. Screw the Adaptor nut onto themachine wrench tight, using the
supplied wrench. Use of hammers
or wrench extension bars is notadvised.

Secure all Lock Screws at Each
Installation

3. Tighten all the lock screws in the Adaptor Nut wrench tight.
4. Thread the Balancer/adaptor flange assembly onto the mating threads on the Adaptor Nut.
5. Tighten the lock screws in the Adaptor Flange wrench tight
6. All lock screws must be fully loosened before attempting removal of these parts from the machine.
The Balancer must be checked for machine clearances at installation. Make sure there is no interference
between the Balancer/adaptor assembly and any part of the machine (e.g., workhead, tailstock), especiallywith the wheel at its smallest diameter. Modify the machine guarding if needed to provide clearance fromthe Balancer. Machine guarding should be modified to allow the rotary junction and cable to extend outside
the guard.
The Balancer Cable should be restrained
to prevent the cable from being caught up in
the rotating machine but should allow for the
Modify Machine Guarding
cable’s removal as necessary during wheel
if necessary to clear
Balancerchanges. Optimally, the cable should besecured so that the connector on the Balancer
points down, as shown in the diagram. This
position will minimize the chance of fluid orswarf entering the connector when opened
Secure Balancer Cable
Firmly to Machineduring wheel changes. If heavy wheels arebeing changed, remove the Balancer from thearea during wheel changes. Most adapters forlarger machines are of a two-piece design,
which simplifies this process. MaintenanceNote: SBS Cable connectors are IP67 fluid sealed when closed, but subject to contamination when open.
Care must be taken to clean out the pin area of cable connectors prior to each re-connection to prevent
premature connector failure. SBS recommends the use of an electrical contact spray lubricant for thispurpose.

6

SBS System – SB-1000 Operation

The previous installation drawings show the balancer mounted on the wheel end of the grinder spindle. Other
balancer installation options are available including mounting an External Balancer to the pulley or drive endof the spindle (where machine construction permits). Internal Balancers are also available that mount inside
an OEM supplied bore inside the machine spindle.
Internal Balancers – Automatic mode
Internal Balancers are designed for mounting inside
the machine spindle. The machine manufacturer
must provide a precision-machined mounting bore aspart of the design of the grinder’s spindle in order toaccept an internal balancer. This figure shows aninternal balancer mounted in the wheel end of themachine spindle with cable connection to the backside of the spindle. This mounting style is typical,
although other designs are available. Mounting
instructions are provided with each model.
The internal balancer shown with cabled connection
to the SBS collector, which is mounted separately at the rear end of the spindle (not pictured). With otherversions of the balancer, the collector can also be mounted at the wheel end of the spindle, directly attachedto the balancer, eliminating the need for the cable bore down the center of the spindle.
RPM Sensor – Manual mode
An RPM Sensor is required in Manual Balance mode. The SBS sensor SB-1800 (pictured below) is a
proximity type sensor with M12 cable connection. This sensor is recommended for permanent installations.
The cable is sold separately in different lengths.
The sensor must be mounted on a stationary part of the grinder and be positioned to face a trigger feature on
the rotating part of the spindle assembly. The sensor must be mounted in line with the trigger feature andwithin 2mm distance of the trigger feature surface as it passes under the RPM sensor. The trigger featuremust be a once per revolution feature. It can be either a hole of minimum 8mm diameter or a protrusionfrom the regular surface of the same size; however, SBS recommends a hole be used for safety reasons.
An optical sensor is also available for use with reflective tape as a trigger, part SB-1802. This sensor has thesame size and configuration as the proximity sensor.
An RPM signal by itself (from the motor or other source) is not adequate to achieve balance, as an RPM
sensor with one fixed position must be used to allow the phase position of the spindle to be determined.

SBS System – SB-1000 Operation

7

Control Unit Operating Instructions
Front Panel Controls
The following figure illustrates the front panel of the Balance Control Unit.
1

2

6

3

7

4

5

1) LCD Display. This screen is used to display data and show current settings and status information.
Information is displayed using a symbol-based interface, which is independent of language. The display
will dim over a period of about 24 minutes when inactive (no user button presses).
2) Setup
button. Press to access the operational settings of the control. Press and hold this button toaccess the screen for selection of single machine or multiple machine operation.
3) Cancel
button. Press to cancel the operation in progress, or cancel the last selection or entry made.
This button also clears any displayed error message.
4) Balance
button. Press to start a balance operation (either automatic or manual, depending on current
mode set).
5) Manualbutton. When in Automatic Balance mode press this button to access the Manual Weight
Movement screen, which allows the user to change position of the weights in the installed SBS balancer.
When operating in Manual Balance mode, this button is used to perform various steps in the manualbalance process.
6)

buttons. Manually move Balancer Weight 1 or change value of currently selected digit.

7)

buttons. Manually move Balancer Weight 2 or select digit.

8

SBS System – SB-1000 Operation

Startup and Operation
Power-On Display

Power on display shows only after power is applied and displays for 2 seconds. Press and hold theCancel button to extend the duration of this display until the button is released. For support reference,
the installed Firmware rev. is displayed at the right side of this screen, and below that the FPGA code
rev.
Multiple Machine Operation
Press and hold the Setup
operation.

button to access the screen for selection of single machine or multiple machine

The first icon selects single machine operation, and the second icon selects multiple machine operation.
When in multiple machine operation, the control saves setup information for up to eight separate machines,
using a machine ID number of 1-8. This is useful where the control will be moved between machines withdifferent setup requirements. Single machine operation should be used for a dedicated installation.
When Multiple Machine operation is selected, the power up screen for the control is immediately followedby the machine selection screen. This allows the user to verify that the selected machine ID matches the IDof the machine the control is operating on. It is recommended that the grinding machines in such a scenario
are labeled with the appropriate machine ID number for reference.

The first screen shown indicates that machine 3 is selected and it is setup for Manual balance mode ( ).
The second screen indicates that machine 4 is selected and it is setup for Automatic balance mode ( ). If
no balance mode is setup for a particular ID number, then the ( ) on screen will be empty. This indicates anavailable or unused ID.
Use the arrow buttons
Pressing

to change the machine number selected.

will accept the current selection and go to the Main screen.

Pressing
will accept the current selection, and show the select balance mode screen, allowing the balancemode to be changed for the selected machine.

SBS System – SB-1000 Operation

9

2

1

Main Screen
7
3

4

5

6

This is the main display screen of the SB-1000, regardless of the balance mode set (automatic or manual).
The basic features are as follows:
1. RPM indication. RPM values will not display if there is no incoming signal (spindle is stopped, or RPM
sensor is missing or shorted). A manual RPM value can be set if needed (see Manual Weight
Movement).
2. Vibration level indication. Vibration values will not display if there is a vibration sensor error (missing
or shorted), or if there is no RPM value displayed.
3. Vibration bar graph. Shows the current vibration level graphically. The scale is linear between thecurrent settings for Balance Limit and Balance Tolerance. A different linear scale applies between the
Balance Tolerance level and the Critical Balance level.
4. Balance Limit. This fixed position on the graph indicates the current level set for the Balance Limit,
relative to the measured vibration level.
5. Balance Tolerance. This fixed position on the graph indicates the current level set for the Balance
Tolerance, relative to the measured vibration level.
6. Critical Balance Level. This fixed position on the graph indicates the current level set for the Critical
Balance, relative to the measured vibration level.
7. Status indication area. Displays several icons to indicate status conditions.
indications, common to both automatic and manual balance modes are as follows:a.

- Front Panel Inhibit (FPI)b.

- Machine ID number selected (shown only in multiple machine operation).

The general statusc.

- Tolerance Level exceeded. (Not shown) The symbol will display and flash in the same position
as thesymbol shown on the screen if the vibration is over the level set by the user for Balance
Tolerance.

d.

- Critical Balance exceeded. The symbol will flash if the vibration level is over the Critical
Balance level user setting.

e.

- Critical RPM exceeded. The symbol will display and flash if the RPM level is over the Critical
RPM user setting.

f.

- Below Critical Low RPM. The symbol will display and flash if the RPM level is below theCritical Low RPM user setting.

g.

- Error Condition. The symbol is displayed only if an error condition is present but was hiddenby the user by pressing
Cancel. Pressagain to display the hidden error(s).

10 SBS System – SB-1000 Operation

Preparing to Set Operating Parameters
Ensure you fully understand the function and operation of the Control’s front display panel as
described in previous sections, before attempting the following operations.
Background Vibration
A check of the background vibration level must be performed, to correctly set up the system.
Install the Balancer, Control, and all cables as indicated in the installation section of the manual. Leave thegrinding machine off, press theManual button to manually enter the operational RPM of the grinding
machine. Note this measured ambient vibration level without the machine running.
Turn on all secondary machine systems (such as hydraulics and motors) but leave the machine spindle turned
off. The vibration level displayed without the spindle running is the background vibration level for themachine. Note this background vibration level for future reference in setting the operating parameters of thesystem. Refer to the “Environmental Considerations” section for explanation of possible sources ofbackground vibration.
Verifying Balancer Sizing – Automatic Balance Mode
Using the Manual Weight Movement buttons, rotate the masses in the Balancer while the machine isoperating at speed. By running each of the two weights in opposite directions, the operator should be able tointroduce more than three microns of vibration in the grinding machine, but not more than thirty microns.
For grinders that operate at higher speeds (above 5000 RPM), the range of acceptable Vibration produced bybalancer movement should be lowered. If results do not fall within this range, it may be a sign that theBalancer needs to be re-sized for your application. Contact your SBS Balance System provider for
consultation. In the interim, do not allow the grinder to operate for extended periods with high vibrationlevels.
Limit
The SBS Balance System will automatically balance to a user specified low-limit of vibration, the AutoBalance Limit. The Limit represents the best balance achievable and is the target vibration level during an
automatic balance cycle. It is factory set at 0.4 microns displacement. A balance Limit of 1.0 micron or lessis generally considered adequate for most applications. The Limit should be set at least 0.2 microns higher
than the highest background vibration level noted in the “Preparing to Set Operating Parameters” section.
The lower the Limit is set, the longer the system will require achieving balance. Some experience may
be necessary to determine the appropriate auto-balance Limit for a particular installation.
NO BALANCE SYSTEM IS CAPABLE OF BALANCING THE GRINDING WHEEL TO A VALUEBELOW THE BACKGROUND LEVEL. Trying to set the balance Limit below background levels will
result in long or failed balance cycles. Since the background vibration level is often a product of floortransmitted vibrations, these levels may change as adjacent machines are put into or out of service. Set thebalance Limit during periods when the system will receive the maximum floor transmitted vibration.
Tolerance
This setting establishes an upper limit for normal process vibration for the grinder. When reached, thissetting will cause an indication of the need to perform an Auto-Balance. Indications given on the front panel
for balance status are shown, and additional indication is given via. the Hardwire Interface. The Tolerance
level is typically set at least 1 micron above Limit setting.
Critical Vibration
This setting establishes an operational upper safety limit of vibration for the system. When reached, thissetting will cause an indication of the critical need to perform a re-balance operation. This indication on the
SBS System – SB-1000 Operation 11

front panel is shown, and additional indication is given via. both the Hardwire and Software Interfaces. The
Critical level is typically set at least 5 microns above the Tolerance setting.
Timing of Auto-Balance
Grinding wheel contact with a work piece or dresser will produce higher vibration levels on the grinder.
This is normal and these levels may exceed the Tolerance level, however this vibration is not related towheel balance. Checking the vibration level manually or by the Hardwire interface to determine if there isneed to rebalance should only be done at points in the grinding process when grinding or dressing are notoccurring, such as between parts cycles. Auto-Balance cycles should also only be run at these same points inthe process. Attempting to run Auto-Balance cycles while in the grind or dress process will not be effective,
and likely will worsen rather than improve balance on the grinder.

Setup Overview
Select Balance Mode (Automatic or Manual)
The SB-1000 can be operated in two separate modes, Automatic Balance, or Manual Balance. Automatic
Balance mode uses an SBS Balancer to perform fully automatic balancing operations. Manual Balance mode
uses an RPM sensor instead of the SBS Balancer. In this mode the control acts as a balance analyzer anddirects the user how to manually position balance weights on the spindle assembly to achieve balance. Press
and hold the
Setup button for one second to display the balance mode selection screen.
- Automatic Balance Mode
- Manual Balance ModeTheorbuttons will change the selected mode. The selected mode is highlighted, with Automatic
mode being selected in the above screen. Press
Setup or Manual button to accept the current selection.
Press
Cancel to exit selection without saving changes. The next screen displayed will be the first setup
screen in the active mode.
Setup Mode Operation
There are several user selectable operating settings for the SB-1000, which are found under the
Setup
menu. Press the
Setup button to enter the menu of setup options. When the SB-1000 is in setup mode,thesymbol is displayed on the upper left corner of the screen. Setup mode will time out after 1 minute ofinactivity and the unit will return to the Main screen without saving any unsaved changes. The hardwire
interface output relays will remain active during setup.
Most settings are represented by symbols that represent the options the user can select between on thatsetting screen. When a setting screen is displayed an underline indicates which option is currently set, andthat option symbol will also be highlighted. Either theorbuttons can be used to change thecurrent selection.
Some setting screens require a number to be set. Where a number needs to be entered, thebuttons areused to select the digit to be changed (move the underline). The
button increments the number at theunderlined digit, and the
button decrements the same digit. Holding the arrow button will start anaccelerating repetition of the button press.
The
symbol at the right side of the screen will flash whenever there is unsaved settings data. Data is
saved by pressing either the
Setup button or the Manual button.
12 SBS System – SB-1000 Operation

Pressing the
Setup button will save data and advance to the next setting in the menu. From the lastsetting screen in the menu, the unit will exit setup mode and return to the Main screen. To advance to thenext setting without changing a setting, just press the
Setup button without using any arrow buttons.
Pressing theManual button will save data and exit setup mode, returning to the Main screen.

Pressing
Cancel will discard unsaved changes and revert to the previously saved data. If there is nounsaved data,
Cancel will exit setup mode and return to the Main screen.
A display option is available for FPI mode. This setting controls if the current vibration reading is displayedor hidden (***.*) when FPI mode is activated.

Automatic Balance Mode
Setup Automatic Mode
There are four settings under the
Setup button in this mode. These settings are described in the“Preparing to Set Operating Parameters” section. Each press of the
Setup button will present each ofthese settings in the following sequence.
The
Limit setting is displayed at the first press of the
Setup
button. The
Limit indicator flashes to emphasize this mode.
The edit range is 0.02 to (Tolerance – 0.2).
The

Tolerance setting is displayed at the next press of the
Setup button. The Tolerance indicator flashes to emphasize
this mode. The edit range is (Limit + 0.2) to (Critical – 0.2).
The
Critical Vibration setting is displayed at the next press ofthe
Setup button. The
Critical indicator flashes toemphasize this mode. The edit range is (Tolerance + 0.2) to 99.99.
The

Critical RPM setting is displayed at the next press of the
Setup button. The
Critical RPM indicator flashes toemphasize this mode. The edit range is 300 to 30100, and OFF
displays 0.
The
Critical Low RPM setting is displayed at the next press ofthe
Setup button. The
Critical Low RPM indicator flashes
to emphasize this mode. The edit range is 300 to 30100, and OFF
displays 0.
The- Front Panel Inhibit (FPI) display setting is displayed at thenext press of the
Setup button. Select whether vibration values
are to be displayed when the FPI input is active during a balancecycle.
SBS System – SB-1000 Operation 13

Automatic Balance Operation
From the Main screen press the
Balance button to start an Auto-Balance cycle. This screen displays forthe duration of the balance cycle, showing thesymbol in the status area of the screen (below the RPM
indication). The Balance cycle can also be started or terminated from the hardwire inputs. A Balance cycle
may be run with an accurate Manual RPM value entered if there is no incoming RPM signal.

Thesymbol will rock back and forth during the balance cycle to indicate activity, and the Weightindicators will show + / - to show weight activity and direction. The balance cycle continues until the Limit
setting is reached, or the cycles fails and times out.
Press
Cancel to end the balance cycle at any time. Upon completion or termination, the display returns to
the Main screen.
Manual Weight Movement - Automatic Balance Mode
The SB-1000 in Automatic Balance also allows the weights in the SBS Balancer to be operated manually.
The ability to move the balance weights is useful for performing diagnostic tests and allows operators tomanually balance machines where needed. From the Main screen press theManual button to display the
Manual Weight Movement screen, showing thesymbol in the status area of the screen.
If an incoming RPM signal is not detected, then this screen will
request a “Manual RPM” value be entered. The RPM value ischanged using the arrow keys.
Press
Manual,Setup, orCancel to go on to balancemode (
Cancel will not save the new RPM).
The Manual RPM value will be used until an actual RPM signal
is detected, which will then replace it.

The Manual Weight Movement screen can be used to move the weights in a balancer.
Thebuttons will move one of the balancer weights in the indicated direction. The
buttons will
move the other balancer weight in the indicated direction. Pressing a button will cause a 30 ms motion
followed by a short pause, and then the weight will move continuously until the button is released. The
displayed arrow will fill in to show weight activity. Only one weight can be moved at a time.

Cancel will exit setup mode and return to the Main screen,
Balance will start an auto balance cycle.

14 SBS System – SB-1000 Operation

Setup will go to Setup Mode, andManual Balance Mode
Setup Manual ModeIn Manual Balance mode three additional settings are added under the
Setup menu. These new settings
are listed first in the menu. Each press of the
Setup button will present each of these settings in thefollowing sequence.
These settings are followed in the Setup menu by the four settings already described under Setup Automatic
mode (Limit, Tolerance, Critical Vibration, Critical RPM).
Balance Type. Each type describes the method of balancing
weight attachment to be used on the machine to performbalancing.
Single Weight – One single weight of variable mass is
positioned at a variable angle position.
Two Weights – Two equal fixed mass weights are
positioned at variable angle positions.
Three Weights – Three equal fixed mass weights are
positioned at variable angle positions.
Fixed Positions – A specified number of mounting positionsin an equally spaced fixed pattern (such as a bolt circle) areavailable for adding variable mass weights.
If Fixed Positions is selected, then the following screen isdisplayed and allows for editing the number of fixed positions
from 3 to 99. The positions are assumed to be evenly spaced in a
360-degree pattern. They must be labeled on the machine from
1 to the highest number available, to identify the positions duringbalancing.
Scale Direction. Sets the direction of the scale used to position
the balance weights relative to the wheel’s direction of rotation.
The weight scale direction is the direction (clockwise orcounterclockwise when facing the scale) in which the angle
references (0°, 90°, 180° etc.) or the weight position location
numbers (1,2,3,4, etc.) increase. The system must know if thisdirection is the same as, or opposite to, the wheel’s direction ofrotation.
The top image shows the selection where the weight scale andspindle rotation are in the same direction.
The bottom image shows the selection where the weight scale andspindle rotation are in the opposite direction.

SBS System – SB-1000 Operation 15

Manual Balance Overview
Important - Performing a Manual Balance will only be successful if the user is very careful in following
each step of the process, and making certain that weight movements and additions are performed accurately.
Both the mass of weight used, and the positioning of weights used will determine the accuracy of the
Balance achieved.
Press
cycle:

Balance to start a complete Manual Balance operation. There are three phases for each balancingZero phase. The vibration level is measured and saved.



Test phase. The test weight is measured so its effect can be calculated.



Solution phase. The balancing solution is given. The Trim phase is just an iteration of the Solution
Phase, performed if more adjustment is needed.

Four Parts of Each Phase:
1. Stop spindle. The control indicates that the spindle needs to stop.
2. Apply weights. Once stopped the operator must adjust the weights.
3. Start Spindle. The spindle must be started.
4. Measure. The vibration can be measured for calculating the next phase.
Information is not remembered through a power cycle. The hardwire interface output relays will remain
active during the balance operation. Except where noted, theCancel button will stop the balance
operation and return to the main screen.
Trim Phase
The first two phases of the balance cycle (Zero and Test) allow the SB-1000 to determine and save essential
information regarding the condition of the grinder and how changes in balance weights will affect machinebalance. Assuming the conditions on the machine do not change (RPM, wheel size, etc.) then subsequentbalance operations can be successfully performed without re-running these two phases. If machineconditions do change, then performing balance operations based on the saved results of the Zero and Test
phases will produce inaccurate results.
Trim phase balancing can be performed at any time that vibration levels rise above a satisfactory balance
condition. Press
Manual to start a Trim Balance operation. This skips the Zero and Test phases of theoperation and starts at the Solution phase. To do this the SB-1000 must have saved results from a previously
completed Zero phase and Test phase. If theManual button is pressed when these two phases have notbeen completed, then the
FPI indication will display for 1.5 second, and the Solutions screen will not be
displayed.
Balancing Problems - If successive Trim balance attempts are unsuccessful, this is an indication that either
machine conditions have changed, or an error has occurred in weight placement (inaccurate position(s) ormass changes). In this case the operator should verify the Scale Direction setting is still accurate, then press
to start a new complete Manual Balance operation.
Three sections follow to describe the operation of the different balancing types.

16 SBS System – SB-1000 Operation

Single Point Manual Balance
1) Stop Spindle - This screen requests the operator to stop the spindle. The
Stop Spindle icon flashes as areminder. This screen stays until the control detects that the spindle rotation has stopped.

2a) Apply Weights, Zero Phase - Once the spindle is stopped, this screen shows the operator how to place
the weight. During the Zero Phase the weight should be removed.

2b) Apply Weights, Test Phase - The test weight must be added (test weight is shown.

+ ) at zero position. The value of theDuring the Test Phase pressing
Manual (noteicon) will
display this screen, allowing the test weight value to be edited.
The weight units can also be selected from g, oz, lb, kg, andnothing.
It is essential to enter an accurate value for the test weight.
When done editing press
to save changes and return to the
Apply Weights screen above.
2c) Apply Weights, Solution Phase - The weight should be changed to the position and mass shown to bring
the balance to a minimum.
Weight change display can be either additive (+ ) or absolute (= ). Press
Manual button totoggle between these options (noteicon). This selection will remain active until changed. Additive
weight display (+ ) shows what incremental changes should be made to achieve balance, with all
previously placed weights on the grinder remaining in place. Absolute weight display (= ) shows what
total weight should be applied to achieve balance, assuming all previously placed weights will be removed.
Additive Weight Change

Absolute Weight Change

SBS System – SB-1000 Operation 17

Additional iterations of the Solution phase (Trim Phase) can be performed if the balance solution isunsatisfactory. The box on the left side of the screen contains the equivalent single point total balancesolution. The digit to the left of the box indicates the phase (1-Zero, 2-Test, 3=Solution, 4 or higher=Trim).
The higher this number gets, the more Trim balance operations have been performed since the last
determination of a correct Zero and Test phase.

——

It is possible at the Solution Phase that a balance solution isdifficult to achieve, at which time one of these screens may bedisplayed instead of the Solution screen.
The top image indicates that bigger weights should be used.
Press
button to return to Apply Weights screen for an
opportunity to use a larger weight and repeat the Test phase.
The bottom image indicates that the compensation numbers arevery large or small for accurate display and the weight units in
use may need to change.
Pressbutton to return to the Apply Weights screen without
making any changes.
If changes are made, a new complete balance operation should
be run by pressing .
Pressing
will advance to the next step in the phase, the Start Spindle screen. The
reminder. Starting the spindle will also advance to the next screen.

symbol flashes as a3) Start Spindle – This screen requests the operator to start the spindle. The
icon and the “RPM” both
flash as a reminder. The control stays on this screen until it senses the spindle is up to constant speed. Thenthe screen advances to the Measure screen. The
symbol indicates that the weight locations will be
displayed for review by pressing the
button (will go back to Apply Weights screen).

4) Measure – The control measures the new vibration level. The operator should wait for the RPM andvibration to stabilize then press
button to advance to the next screen. The
symbol flashes as areminder. If the balance level is below the Limit, then the balance process is complete, and the next screen
displayed is the Main screen. Otherwise the control will advance to the Stop Spindle screen of the next
phase. Press
button to back up and show the Apply Weights screens to review the last weight changes.

18 SBS System – SB-1000 Operation

2 and 3 Weight Manual Balance
1) Stop Spindle - This screen requests the operator to stop the spindle. The
Stop Spindle icon flashes as areminder. This screen stays until the control detects that the spindle rotation has stopped.

2a) Apply Weights, Zero Phase - Once the spindle is stopped, this screen shows the operator how toplace the weight. During the Zero Phase the weights must be removed or moved to the null position as shown.

2b) Apply Weights, Test Phase - During the Test Phase the weights are moved to a location where the effectof one weight can be measured.

2c) Apply Weights, Solution Phase - The weight positions should be changed as shown to bring the balance
to a minimum. Both the three weight and 2 weights screens are shown following. Extra iterations of thisphase (called Trim Phase) may be required. Pressing
will advance to the next part of the phase, the Start
Spindle screen. The
symbol flashes as a reminder. Starting the spindle will also advance to the nextscreen.

—or—
It is possible at the Solution Phases that a balance solution isdifficult to achieve, at which time one of these screens may bedisplayed instead of the Solution screen.
The images depict suggestions to improve results by increasingor decreasing the weight and/or changing the balance type
between two and three weights.
Press
button to return to the Apply Weights screen without
making any changes.
If changes are made, a new complete balance operation should
be run by pressing .

SBS System – SB-1000 Operation 19

3) Start Spindle – This screen requests the operator to start the spindle. The
icon and the “RPM” both
flash as a reminder. The control stays on this screen until it senses the spindle is up to constant speed. Thenthe screen advances to the Measure screen. The
symbol indicates that the weight locations will be
displayed for review by pressing the
button (go back to Apply Weights screen).

4) Measure – The control measures the new vibration level. The operator should wait for the RPM andvibration to stabilize then press
button to advance to the next screen. The
symbol flashes as areminder. If the balance level is below the Limit, then the balance process is complete, and the next screen
displayed is the main screen. Otherwise, the control will advance to the Stop Spindle screen of the next
phase. Press
button to back up and show the Apply Weights screens to review the last weight changes.

20 SBS System – SB-1000 Operation

Fixed Position Manual Balance
1) Stop Spindle - This screen requests the operator to stop the spindle. The
Stop Spindle icon flashes as areminder. This screen stays until the control detects that the spindle rotation has stopped.

2a) Apply Weights, Zero Phase - Once the spindle is stopped, this screen shows the operator how toplace the weight. During the Zero Phase the weights must be removed.

2b) Apply Weights, Test Phase - During the Test Phase a test weight must be added (+ ) at position 1.
The number inside the Weight icon shows the position number where weight is to be added. The value ofthe test weight is shown.

During the Test Phase pressing
Manual (noteicon) will
display this screen, allowing the test weight value to be edited.
The weight units can also be selected from g, oz, lb, kg, andnothing.
It is essential to enter an accurate value for the test weight.
When done editing press
to save changes and return to the
Apply Weights screen above.

2c) Apply Weights, Solution Phase - The weight positions and masses should be changed as shown to bring
the balance to a minimum.
Weight change display can be either additive (+ ) or absolute (= ). Press
Manual button totoggle between these options (noteicon). This selection will remain active until changed. Additive
weight display (+ ) shows what weight changes should be made to achieve balance, with all previously
placed weights on the grinder remaining in place. Absolute weight display (= ) shows what weightchanges should be made to achieve balance, assuming all previously placed weights will be removed.
Additive Weight Change

Absolute Weight Change

SBS System – SB-1000 Operation 21

Additional iterations of the Solution phase (Trim Phase) can be performed if the balance solution isunsatisfactory. The box on the left side of the screen contains the equivalent single point total balancesolution. The digit to the left of the box indicates the phase (1-Zero, 2-Test, 3=Solution, 4 or higher=Trim).
The higher this number gets, the more Trim balance operations have been performed since the last
determination of a correct Zero and Test phase.

— —It is possible at the Solution Phases that a balance solution isdifficult to achieve, at which time one of these screens may bedisplayed instead of the Solution screen.
The top image indicates that bigger weights should be used.
Press
button to return to Apply Weights screen for an
opportunity to use a larger weight.
The bottom image indicates that the compensation numbers are
too large or too small for accurate display and the units mayneed to change.
Pressbutton to return to the Apply Weights screen without
making any changes.
If changes are made, a new complete balance operation should
be run by pressing .
Pressing
will advance to the next part of the phase, the Start Spindle screen. The
reminder. Starting the spindle will also advance to next screen.

symbol flashes as a3) Start Spindle – This screen requests the operator to start the spindle. The
icon and the “RPM” both
flash as a reminder. The control stays on this screen until it senses the spindle is up to constant speed. Thenthe screen advances to the Measure screen. The
symbol indicates that the weight locations will be
displayed for review by pressing the
button (go back to Apply Weights screen).

4) Measure – The control measures the new vibration level. The operator should wait for the RPM andvibration to stabilize then press
button to advance to the next screen. The
symbol flashes as areminder. If the balance level is below the Limit, then the balance process is complete, and the next screen
displayed is the main screen. Otherwise, the control will advance to the Stop Spindle screen of the next
phase. Press
button to back up and show the Apply Weights screens to review the last weight changes.

22 SBS System – SB-1000 Operation

Hardwire Interface
Interfacing the SB-1000 with a CNC or PLC machine controller is supported via a hardwire interface. The
hardwire interface is provided via a standard DB-25 connector located on the rear panel. Because of themany possible variations and configurations of cabling required for such an interface, it is left to the operator
to supply the necessary cable.
When designing an interface for the SBS System, it is important to understand that the grinding
machine's controller must operate the SBS System. It is not possible for the SBS System to control thegrinding machine.
Carefully read this entire manual before attempting to interface the SB-1000 with any machine controller.
Hardwire Interface Overview
The hardwire interface consists of three sections: interface power supply, the inputs, and the outputs.
The interface power supply is provided exclusively for use with the hardwire interface inputs. It consists ofthree common pins and one output pin. The common pins are internally connected to chassis ground. The
output provides a maximum of 30 mA at approximately +15VDC. Any external power used for interface I/O
must be from a SELV (Safety Extra Low Voltage) source or supply.
The three inputs provide noise immunity and robustness. The inputs are activated by being pulled high, either
by connection to the SB-1000 hardwire interface power supply output or by connection to a customer
supplied signal. Activating the inputs requires at least 8 mA at a voltage between 10 and 26 volts, AC or+DC, referenced to the SB-1000 hardwire interface power supply common. The common pins are internallyconnected to chassis and earth ground. The inputs are deactivated by removing the connection to the poweror signal source.
Hardwire Interface Connector
Standard for all SB-1000 models
CommonN/C
N/C
N/C
RPM Return
RPM Output
CommonFBSI

Relay Contact - NC

BOT Relay Contact - NC
BOT Relay Contact - NO
FBSI

Relay Contact - NO

BIP Relay Contact - NO

BOT2 Relay Contact - NO
BOT2 ReturnBOT2 Relay Contact - NC
FPI Input
SBC Input
SPB (Stop Balance) Input
Supply Output
N/C
BOT Return
FBSI Return
BIP Return
BIP Relay Contact - NC

CommonShell (Shield Gound)

The four primary outputs consist of optically isolated, solid state, single-pole/double-throw relays. These
relays may be used to supply an output signal by connection to a voltage source supplied by the customer.
SBS System – SB-1000 Operation 23

The relay contacts are electrically isolated from all other circuits and are rated for 24 Volts DC or AC, 50
mA maximum. Inductive loads must be protected against flyback to 50VDC.
The three contacts of a single-pole/double-throw relay are referred to as “normally open”, “normally closed”
and “common”. The term “common” in this sense does not imply connection to power supply commons. The
term “return” is used below to indicate the common contact of the relay.
Input Pin Names and Functions

Pin# Name

Description

18

SBC

Start Balance Command- Momentarily activated to initiate an automatic balance operation.
The rising edge of this signal starts the operation.

19

SPB

Stop Balance Command- When active, this input stops an automatic balance operation inprogress and inhibits the start of an automatic balance operation from the hardwire interface.
Thebutton is still functional on the front panel.

17

FPI

Front Panel Inhibit- When active, key operator actions at the front panel keypad are
disallowed. The
Wrench,Manual, andBalance buttons are disabled. The
button is still enabled, which can be used to stop an automatic balance operation. The
FPI setting affects the display when active.

Output Pin Names and Functions

Pin# Name

Description

22
10
9

BOT-R,
BOT-NO
BOT-NC

Balance Out of Tolerance: Return, normally open, and normally closed
contacts. This output is active when 1) the measured vibration level exceeds
the operator set vibration Tolerance and remains active if the vibration exceeds
the Critical Tolerance. 2) It is also active if the spindle RPM exceeds theoperator defined Critical RPM setting, but not active if the spindle RPM falls
below the user set Critical Low RPM setting.

15
14
16

BOT2-R
BOT2-NOBOT2-NC

Balance Out of Tolerance Two: Return, normally open, and normally closed
contacts. This output is active 1) when the measured vibration level exceeds
the operator defined Critical Tolerance, 2) when the spindle RPM exceeds
the operator defined Critical RPM setting, or 3) if spindle RPM falls below theCritical Low RPM setting.

24
12
25

BIP-R
BIP-NO
BIP-NC

Balance In Progress: Return, Normally Open, and Normally Closed contacts. This relay
is energized while an automatic balance operation is in progress.

23
11
8

/FBSI-R/FBSI-NO/FBSI-NC

Failed Balance/ System Inoperative: Return, normally open, and normally closed
contacts. This relay is energized after a successful Power On Self-Test, when the power
is disconnected, or when the control is in stand-by. It is de-energized if a fault condition
arises.

6
5

RPM
RPM-R

This relay closes once per revolution for a minimum of 1ms. This is a buffered output of
the RPM signal generated by the balancer. It is not available if the RPM has beenentered manually.

24 SBS System – SB-1000 Operation

BALANCE LIMIT

BOT LEVEL

BOT2 LEVELGRINDING OR
DRESSINGCYCLEVIBRATION
EXCEEDSTOLERANCEBEWEENGRINDING
CYCLES= RELAY CLOSED= RELAY OPENWHEEL BALANCED

0.2 MICRONS (minimum recommended)

ALLOW 2 SEC.
FOR RELAY TO OPEN

NOT APPLICABLE

SB-1000 BEHAVIORBALANCECYCLE IN
PROGRESSVIBRATION PLOT AT
SPINDLE FREQUENCYGRINDING OR
DRESSING
CYCLE

SBC ALTERNATESBC SIGNAL

BIP RELAY

BOT2 RELAY1

BOT RELAYBEWEENGRINDING
CYCLES

CNC/System Timing Diagram

BACKGROUND VIBRATION LEVELGRINDER ON

POWER UP
1

(ALLOW 5ms FOR RELAY TO OPEN)

INACTIVE SETTING - RELAY OPENS WHEN
BALANCE CYCLE STARTS

CNC/System Timing Diagram

SBS System – SB-1000 Operation 25

System MaintenanceCollector MaintenanceOperator maintenance of the SBS Balance System is restricted to replacement of the Balancer slip ringassembly as necessary. Instructions are shipped with the collector replacement parts. Cable schematics for
the Balancer Cable and Sensor Cable follow to assist with minor repair or wiring connection work. If further
service is required, contact your SBS Balance System source, or Accretech SBS, Inc.

Balancer Slip Ring Replacement
RPM Sensor(SB-8520) Slip Ring Block
Guide Slot
Slip Ring Post
Slip Ring Connector
Plastic Retaining Clamps
Main Connector
Cover
Cover Screws (M3)Cap

SBS Collector Diagram (SB-8510)

Post Screws (M3)
(SB-8530) Slip Ring Post
Bearing
Ring
Post Connector
Balancer

SBS Return/Repair Policy
Accretech SBS, Inc.’s policy is to give highest priority to the service needs of our customers. We recognize
the cost of machine downtime and strive to deliver same day repair of items arriving by overnight delivery at
our facility. Because of the complication and delays involved with international shipments, customers
outside the continental U.S. should contact their local SBS source for service support. Before returning any
equipment for repair, it is necessary for you to contact Accretech SBS, Inc. for a Return Materials
Authorization (RMA) number. Without this tracking number, Accretech SBS, Inc. cannot ensure prompt andaccurate completion of your repair needs. Failure to obtain an RMA number may result in substantial delay.

26 SBS System – SB-1000 Operation

Balancer Cable (SB-48xx/SB-48xx-V)
BACKSHELLOUTER BRAIDED SHIELDDRAIN 24 AWG (7/32)

BLACK 24 AWG (7/32)
WHITE 24 AWG (7/32)
GREEN 24 AWG (7/32)
INNER FOIL SHIELDBROWN 24 AWG (7/32)
RED 24 AWG (7/32)
ORANGE 24 AWG (7/32)
YELLOW 24 AWG (7/32)

Control End
12p Circular Male DIN
Pin View

Balancer End
7p Bayonet Female
Pin View

RPM Sensor (SB-1816)

BROWN – Supply (+)

BLUE – GND (-)
BLACK – Signal

Control End
12p Circular Male DIN
Pin View

RPM Sensor End
M12 Pin View

Vibration Sensor (SB-14xx)
BACKSHELLOUTER SHIELDBLACK 20 AWG (19/32)
RED 20 AWG (19/32)

Control End
5p Circular Male DIN
Pin View
SBS System – SB-1000 Operation 27

Trouble Shooting Guide
This guide is designed to help you if you experience problems with your SBS Balance System.
If the Power-On screen appears during an Auto Balance operation, the power supply to the SB-1000 is likely
below the required amperage specification.
Step 1ERROR MESSAGES. If the balance Control Unit is displaying any error messages, refer to theError Indications section of this manual for an explanation of the message(s) displayed. Contact Accretech
SBS, Inc. for assistance as required. If reporting a service issue, please indicate the Error Code (letter)of any displayed Errors.
Step 2
VIBRATION SENSOR. If no error messages are displayed, check the Vibration Sensor. Verify
that the Sensor is firmly seated on the machine, its magnet firmly tightened in place, and it is properly
connected to the Control Unit. Also check that the Sensor's position on the grinding machine accuratelyreflects machine balance (see: Vibration Sensor Location section).
As a final check, set the RPM manually on the Control Unit to the operating speed of the grinder, and verify
that there is an incoming vibration signal. To perform this Test the SB-1000 must be set to Automatic
Balance mode, and then press the
button to set the RPM. If you receive a near zero reading from theSensor after manually setting the RPM, the Vibration Sensor and Control Unit should be returned for repair.
Contact Accretech SBS, Inc. for a return materials authorization (RMA) number.
Step 3BALANCER (Automatic Balance mode only). If the Vibration Sensor is working correctly, thenext step is to perform an integrity check of the rest of the system. This test should be performed with themachine running, but not during a grinding or dressing cycle. Press the MAN. button to enter the manualcontrol mode, and simply press each of the four manual buttons, one at a time, for a period of about 5
seconds. With each movement of the Balancer weights, the SB-1000 should register a change in thedisplayed vibration level on the Control Unit. If this does not happen for any of the four buttons, there is aservice problem with the system. The Balancer, SB-1000, Vibration Sensor, and Balancer Cable should all
be returned as a unit. Contact Accretech SBS, Inc. for a return materials authorization (RMA) number.
Step 4
If the control unit’s self-check shows no service problem with the SB-1000, then investigate
environmental/application issues. The background vibration level on the machine should be monitored underoperation, and the Balance Limit setting checked against this level. (see: Environmental Considerations
section) The sizing of the Balancer to the application should also be checked. (see: Verifying Balancer
Sizing section)

If you continue to have problems after following these four steps, contact Accretech SBS, Inc. or
your SBS Balance System source for assistance.

28 SBS System – SB-1000 Operation

Error Indications
The
screen icon is displayed when the error can be hidden manually by pressing the
The Error screen icon blinks for emphasis on these error screens.
Error
Code
A

B

C

D

E

F

G

H

I

J

Messagebutton.

Description
Checked continuously.
Clears automatically.
RPM signal present but out of operating range(300 to 30000).
Checked continuously.
Clears automatically.
Vibration sensor is open, unplugged, or faulty.
Checked continuously.
Clears automatically.
Vibration sensor is shorted or faulty.
Checked at the end of Automatic mode balance
weight motion.
Clears automatically.
Balancer motor and/or cable has a short circuit.
Checked at the end of Automatic mode balance
weight motion.
Clears manually.
Balancer motor and/or cable is open or
unplugged.
Checked at the end of Automatic mode balance
weight motion.
Clears manually.
Balancer motor excess current.
Checked at power-up.
Checksum Error.
Recommend flash update.
Checked continuously.
Low +15V supply to RPM sensor and CNC
connector.
Check sensor and/or cable for short circuit.
Check CNC connections for short circuit.
Automatic Balance cycle failed to reach limit.
Cleared manually.
Try higher Limit.
Balancer may be incorrectly sized.
Checked during a balance cycle.
Clears automatically.
RPM signal is missing.
Spindle may not be turning.
Balancer and/or cable may be unplugged or
faulty.

SBS System – SB-1000 Operation 29

ErrorCode

Message

Description
Checked at the end of Automatic mode balancecycle.
Cleared manually.
Abnormal Auto Balance cycle.
Occurs when a balance cycle finishes, but anerror occurred and was cleared during the cycle.
Checked continuously.
Clears automatically.
Unable to measure vibration.
Control may need repair.

K

L

Checked at power-up.
Does not clear.
Controller has older logic.
Recommend factory update.

M

Checked at power-up.
Does not clear.
Controller has logic problem.
Recommend factory repair.

N

Factory defaults
Holding the

button down during power-up resets all configurations back to factory defaults. To confirm

the default action, the display will show thescreen icon until the button is released. This action is notallowed if the FPI input is active on the CNC hardwire interface.
Factory default settings are as follows:
Limit (0.40)
Tolerance (1.20)
Critical (20.00)
Critical RPM (OFF)Manual RPM (500)Mode (Auto Balance)
Scale Direction (Same)
Manual Balance Type (2 weight)
Fixed Positions (4)Test Weight (0.1)
Weight Units (g)Additive/Absolute Weight Display Mode (+)

30 SBS System – SB-1000 Operation

Appendix A: Specifications
Physical Features
Display
Type: Yellow monochrome OLED
Active area: 256H x 64V pixel
3.11 inch [79mm] x 0.75 inch [19mm]
Communication Interfaces
CNC/PLC Hardwire Interface (opto-isolated outputs)
DC Supply: Input 22 VDC to 26 VDC.
Automatic Balance mode - 3.5A max at 22 VDC.
Manual Balance mode - 0.5A max at 22 VDC.
Reverse voltage protected.
Power Connector: Phoenix 1803578 or equiv.

RPM Sensor:
Environmental and Installation
Pollution degree 2
Installation category II
IP54, NEMA 12
Environmental temperature range: 5°C to +55°C

SBS System – SB-1000 Operation 31

Appendix B: Replacement Parts List
Part#

Description

Balancer/ RPM Sensor Cables
SB-1800
RPM Proximity Sensor
SB-1816
RPM Sensor Cable – 5m/ 16ft
SB-1916
RPM Sensor Extension Cable – 5m/ 16ft
SB-1932
RPM Sensor Extension Cable – 10m/ 32ft
SB-48xx
Balancer Cable /SB-5500 series
SB-48xx-V
Balancer Cable /SB-5500 series – Heavy Duty
SB-46xx
Balancer Extension Cable /SB-5500 series
CA-012112-pin Male DIN (control end plug of Balancer Cable for 48xx series cables)
CA-0125
Standard 7-Pin Female Bayonet Connector (Balancer end of Balancer Cable)
CA-0105
Heavy-Duty 7-Pin Female Bayonet Connector (Balancer end of Balancer Cable)
Vibration Sensors
SB-14xx
SB-16xx

Sensor Cable (standard lengths)
Sensor Ext. Cable (standard lengths)

Control Options
SK-5000
SK-5001
SK-5002
SK-5005
SB-24xx-L

Rack Panel: SB-5500, Full Wide w/ 1/2 Blank, 3U
Rack Panel: SB-5500, Partial Wide 3U w/ Handles
Rack Panel: SB-5500, 1/2 Rack 3U Bracket
Keypad Mount: Flush Panel Frame Kit
Hardwire Interface cable (standard lengths)

Other Parts
SB-8510-V
SB-8520
SB-8530
SB-1300
SB-1321

Complete Heavy-Duty SBS Balancer Low Profile Collector replacement
Collector Slip Ring Block Replacement
Collector Slip Ring Post Replacement
Adjustable Hook Pin Spanner (Adapter Flanges)
Adjustable Face Pin Spanner 3/8” pins (Large Adapter Nuts)

xx in P/N = cable length in feet

Standard options 11 [3.5m], 20 [6.0m], or 40 [12.0m], e.g., SB-4811 = 11ft [3.5m]

SupportFor support, contact the machine builder or SBS at:
Accretech SBS, Inc.
2451 NW 28th Avenue
Portland, Oregon 97210 USA
Tel.: +1 503.227.7908
Fax: +1 503.223.1258
TechSupport@accretechSBS.com
https://accretechsbs.com/

32 SBS System – SB-1000 Operation