FREQUENCY TRANSMITTERSAF SERIESSAFUINSTRUCTION MANUALPreface
Thank you for purchasing the Frequency Transmitter SAFU.

This manual contains instructions for the mounting, functions, operations and notes when
operating the SAFU. To prevent accidents arising from the misuse of this instrument, please
ensure the operator receives this manual.

Notes• This instrument should be used in accordance with the specifications described in the manual.
If it is not used according to the specifications, it may malfunction or cause a fire.
• Be sure to follow the warnings, cautions and notices. If they are not observed, serious injury
or malfunction may occur.
• Specifications of the SAFU and the contents of this instruction manual are subject to change
without notice.
• Care has been taken to assure that the contents of this instruction manual are correct, but if there
are any doubts, mistakes or questions, please inform our sales department.
• This instrument is designed to be installed on a DIN rail within a control panel. If it is not, measures
must be taken to ensure that the operator does not touch power terminals or other high voltage
sections.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• Shinko Technos CO., LTD. is not liable for any damage or secondary damage(s) incurred as aresult of using this product, including any indirect damage.
SAFETY PRECAUTIONS (Be sure to read these precautions before using our products.)
The safety precautions are classified into categories: “Warning” and “Caution”.
Depending on the circumstances, procedures indicated by
Caution may cause serious results,
so be sure to follow the directions for usage.

which may lead to dangerous conditions and cause
Warning Procedures
death or serious injury, if not carried out properly.

CautionProcedures which may lead to dangerous conditions and cause
superficial to medium injury or physical damage or may degrade or
damage the product, if not carried out properly.

Warning• To prevent an electric shock or fire, only Shinko or qualified service personnel may handle
the inner assembly.
• To prevent an electric shock, fire or damage to instrument, parts replacement may only beundertaken by Shinko or qualified service personnel.

Safety precautions• To ensure safe and correct use, thoroughly read and understand this manual before using this
instrument.
• This instrument is intended to be used for industrial machinery, machine tools and measuring
equipment. Verify correct usage after consulting purpose of use with our agency or main office.
(Never use this instrument for medical purposes with which human lives are involved.)• External protection devices such as protection equipment against excessive temperature rise, etc.
must be installed, as malfunction of this product could result in serious damage to the system or
injury to personnel. Also proper periodic maintenance is required.
• This instrument must be used under the conditions and environment described in this manual.
Shinko Technos Co., Ltd. does not accept liability for any injury, loss of life or damage occurring
due to the instrument being used under conditions not otherwise stated in this manual.
Caution with respect to Export Trade Control Ordinance
To avoid this instrument from being used as a component in, or as being utilized in the manufactureof weapons of mass destruction (i.e. military applications, military equipment, etc.), please
investigate the end users and the final use of this instrument.
In the case of resale, ensure that this instrument is not illegally exported.
2

1. Installation precautions

CautionThis instrument is intended to be used under the following environmental conditions(IEC61010-1): Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:• A minimum of dust, and an absence of corrosive gases• No flammable, explosive gases• No mechanical vibrations or shocks• No exposure to direct sunlight, an ambient temperature of -5 to 55 (23 to 131 )that does not change rapidly, and no icing• An ambient non-condensing humidity of 35 to 85%RH• No large capacity electromagnetic switches or cables through which large current is flowing• No water, oil or chemicals or where the vapors of these substances can come into
direct contact with the unit
• When installing this unit within a control panel, take note that ambient temperature ofthis unit as well as the control panel must not exceed 55 (131 ). Otherwise the lifeof electronic components (especially electrolytic capacitor) may be shortened.
Note • Avoid setting this instrument directly on or near flammable material eventhough the case of this instrument is made of flame-resistant resin.

2. Wiring precautions

Caution• Do not leave bits of wire in the instrument, because they could cause a fire and malfunction.
• When wiring terminals, use ferrules with an insulation sleeve and crimping pliers madeby Phoenix Contact GMBH & CO. applicable to terminals.
• Tighten the terminal screw using the specified torque.
If excessive force is applied to the screw when tightening, the screw or case may bedamaged.
• This instrument has no built-in power switch, circuit breaker or fuse. It is necessary to
install them near the instrument.
(Recommended fuse: Time-lag fuse, rated voltage 250V AC, rated current 2A)• For wiring of AC power source, be sure to use exclusive terminals as described in thismanual. If AC power source is connected to incorrect terminals, the unit will burn out.
• For a 24V DC power source, do not confuse polarity when wiring.
• Do not apply a commercial power source to the sensor connected to the input terminal
nor allow the power source to come into contact with the sensor, as the input circuit
may burn out.
• Keep the input wire, power line and output wire away from one another.

3. Operation and maintenance precautions

Caution• Do not touch live terminals. This may cause electric shock or problems in operation.
• Turn the power supply to the instrument OFF when retightening the terminal andcleaning. Working or touching the terminal with the power switched ON may result insevere injury or death due to Electric Shock.
• Use a soft, dry cloth when cleaning the instrument.
(Alcohol based substances may tarnish or deface the unit.)• As the display section is vulnerable, do not strike or scratch it with a hard object orpress hard on it.

3Characters used in this manual
Indication
Number,

/

-1

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

Indication
Alphabet
Indication
Alphabetmeans that no character is indicated (unlit) on the display.

---

CONTENTS ---1. ModelPage
1.1 Model ----------------------------------------------------------------------------· 5
1.2 How to read the model label ----------------------------------------------- 5
2. Name and functions of sections ------------------------------------ 6

3. Mounting

3.1 External dimensions (Scale: mm) ----------------------------------------- 6
3.2 Mounting and removal to/from the DIN rail ----------------------------- 7

4. Wiring

4.1 Recommended ferrules ------------------------------------------------------ 7
4.2 Terminal arrangement and circuit configuration ----------------------- 8
4.3 Wiring of terminals ------------------------------------------------------------ 8
4.3.1 Power source wiring ----------------------------------------------------- 8
4.3.2 Output wiring --------------------------------------------------------------- 8
4.3.3 Input wiring ----------------------------------------------------------------- 8
5. Operation flowchart ------------------------------------------------------- 9

6. Setup

6.1 Indication after power ON ------------------------------------------------- 10
6.2 Basic setup operation ------------------------------------------------------ 11
6.3 Setup of the unit ------------------------------------------------------------- 11
6.3.1 When using this unit as a signal conditioner --------------------- 13
6.3.2 When using the Reverse function ---------------------------------- 13

7. Adjustment

7.1 Basic operation of adjustment -------------------------------------------- 14
7.2 Adjustment -------------------------------------------------------------------- 15

8. Unit operation

8.1 Indication after power-on -------------------------------------------------- 15
8.2 Unit operation ---------------------------------------------------------------- 16
9. Specifications --------------------------------------------------------------- 16

10. Troubleshooting

10.1 Indication --------------------------------------------------------------------- 18
10.2 Key operation --------------------------------------------------------------- 19
10.3 Unit operation --------------------------------------------------------------- 19
11. Character table -------------------------------------------------------------- 19
4

1. Model
1.1 Model

SAFU Frequency
transmitter

-

1
2
3
4

Input

Power supply(*) For SAFU-1 -Series name: SAF
Ultra low frequency transmitter
Low frequency transmitter (100Hz maximum)
Low frequency transmitter (50Hz minimum)
Frequency transmitter
0Open collector
1
Voltage pulse
2Line driver
3
Contact switch (*)
0 100 to 240V AC
1 24V AC/DC(for Ultra low frequency transmitter only)(Example 1) SAFU-10-0: Frequency: 9999mHz
Default value: Input frequency: 9999mHz
Output: 4 to 20mA DC(Example 2) SAFU-20-0: Frequency: 50Hz
Default value: Input frequency: 100Hz
Output: 4 to 20mA DC(Example 3) SAFU-30-0: Frequency: 800Hz
Default value: Input frequency: 9999Hz
Output: 4 to 20mA DC(Example 4) SAFU-40-0: Frequency: 10kHz
Default value: Input frequency: 100kHz
Output: 4 to 20mA DC
1.2 How to read the model label
The model label is attached to left side of the case.
Model (e.g. SAFU-40-0)
Input
OutputSerial number(Fig. 1.2-1)

5

2. Name and functions of sections
1 Power indicator (Green)

Lights when the power to the instrument isturned on.
2 Input display (Red)1

Indicates the input value during Run mode.
Indicates characters of setting (or adjustment)
item during Setup and Adjustment mode.

2

3 Output display (Green)

3

Indicates the output volume (%) during Run mode.
Indicates set (or adjusted) value during Setup
and Adjustment mode.

6

4

7

5

4 Up key ()
Increases the numeric value, or switches theselection items.

5 Down key ()
Decreases the numeric value, or switches theselection items.

6 Mode key ()
Switches the setting mode and registers theset (or selected) value.
By holding down this key for approx. 3 seconds,
the unit proceeds to the Adjustment mode.

(Fig.2.1)

7 Sub-mode key (Unmarked)

If the Mode key is pressed while holding down thiskey, the unit proceeds to the Setup mode.

3. Mounting
3.1 External dimensions (Scale: mm)

75

DIN rail

97
22.5

100
(Fig. 3.1-1)
64

3.2 Mounting and removal to/from the DIN rail

Caution• Mount the DIN rail horizontally.
• To remove this instrument, a flat blade screwdriver is required for pulling down
the lever.
Never turn the screwdriver when inserting it into the release lever.
If excessive power is applied to the lever, it may break.
• Be sure to use commercially available fastening plates at both ends of the unit
if it is in a position susceptible to vibration or shock.
Recommended fastening plate
Manufacturer
Omron Corporation
IDEC Corporation
Panasonic Electric Works Co., Ltd.

Model
End plate
PFP-M
Fastening plate BNL6
Fastening plate ATA4806

Mounting to the DIN rail (Fig. 3.2-1)
First, hook 1 of the instrument on the upper side of the DIN rail.
Second, making 1 part of the instrument as a support, fit the lower part 2 of the
instrument to the DIN rail.
The unit will be completely fixed to the DIN rail when a “Click” sound is heard.
Removal from the DIN rail (Fig.3.2-2)
First, insert a flat blade screwdriver into the release lever ( 1 ).
Second, remove the instrument from the DIN rail by pulling down the lever ( 2 ).
Release lever

1

2

2

(Fig. 3.2-1) Mounting

1(Fig. 3.2-2) Removal

4. Wiring
Warning

Turn the power supply to the instrument off before wiring.
Working or touching the terminal with the power switched on may result in severe
injury or death due to Electric Shock.
4.1 Recommended ferrules
When using ferrules, use the following recommended ferrules and crimping pliers made by
Phoenix Contact GMBH &CO. See (Table 4.1-1) on page 8.
Take note that screw size and tightening torque differ depending on the terminal number.
7

(Table 4.1-1)
Terminal Terminal Ferrules with
Conductor
Tightening
Crimping pliers
numberscrew insulation sleeve cross sections
torque2
1 to 4
M2.6
AI 0.25-8 YE
0.2 to 0.25mm
0.5 to 0.6N•m
CRIMPFOX
ZA 3
AI 0.34-8 TQ 0.25 to 0.34mm2
AI 0.5-8 WH
0.34 to 0.5mm2
CRIMPFOX
AI 0.75-8 GY 0.5 to 0.75mm2
UD 6
2
AI 1.0-8 RD
0.75 to 1.0mm
AI 1.5-8 BK
1.0 to 1.5mm2
5 to 9M2.0
AI 0.25-8 YE
0.2 to 0.25mm2 0.22 to 0.25N•m
AI 0.34-8 TQ 0.25 to 0.34mm2
AI 0.5-8 WH
0.34 to 0.5mm2
4.2 Terminal arrangement and circuit configuration+
Input
Power supply
for sensor
+

5

Input
circuitInsulation
circuitCPU

Outputcircuit3

Power
circuit1

6
7 Fixed voltage
8

circuit 12V

Display/Setting
key circuit

9

4

2

+
Output+Power supply-

Input connection example
+

5
6
12V

-

5
6
12V

7

7

8

8

9

9

Open collector

Voltage pulse

5

5
6

6
12V

7

7

8

8

9

9

Contact switch

Line driver[For SAFU-1 - (Ultra
low frequency transmitter)](Fig. 4.2-1)

4.3 Wiring of terminals

Warning• For 100 to 240V AC, if an AC power source is connected to incorrect terminals,
this instrument will burn out.
• For a 24V DC power source, do not confuse polarity when wiring.
4.3.1 Power source wiring
Use terminals 1 (+) and 2 (-) for the power supply to the instrument.
4.3.2 Output wiring
Use terminals 3 (+) and 4 (-) for the output wiring.
4.3.3 Input wiring
Terminals for wiring differs depending on the input specifications.
Refer to (Fig. 4.2-1).
8

5. Operation flowchart
Power ONWarm-up indication (Approx. 2sec.)

Run mode• To return from Adjustment to Run mode, press the
key for approx. 3sec. From any setting item in
Adjustment mode, it is possible to return to Run
mode.

Hold down thefor approx. 3sec.
Adjustment modeIN
Output zeroadjustment
OUT

IN
OUT

Press thekey.
Output span
adjustment
Press theIN

Press thekey while holding
down the Sub-mode key.
Setup modeSet value lock

OUT

IN
OUT

key.
IN
OUT

IN
OUT

IN
OUT

IN

Press thekey.
Frequency
high limit valueIN

Press thekey.
Output 0%
value

IN

Press thekey.
Output 100%
value

IN

Press thekey.
Decimal point
place

IN

Press thekey.
Output type

OUT

IN
OUT

Press thekey.
OutputNormal/Reverse
Press the

9

key.

OUT

OUT

OUT

Shutdown
threshold value
Press thekey.
Output volume
during shutdownPress theDisplay
selection

key.

Press thekey.
Indication time

OUT

Press thekey.

6. Setup

Setup should occur before using this unit, to set the Frequency high limit value, Output 0% value,
Output 100% value, Output type etc. according to the users’ specifications.
If the users’ specifications are the same as the default value of the instrument, or if setup has alreadybeen completed, it is not necessary to set up the instrument. Proceed to Section “7. Adjustment”.
(Table 6-1)
Setting item
Default value
Set value lock
UnlockFrequency high limit
SAFU-1 - (Ultra low frequency transmitter): 9999mHzvalue
SAFU-2 - (Low frequency transmitter, 100Hz max.): 100Hz
SAFU-3 - (Low frequency transmitter, 50Hz min.): 9999Hz
SAFU-4 - (Frequency transmitter): 100kHz
Output 0% value0
Output 100% value
9999
Decimal point place
No decimal point
Output type
4 to 20mA DC
Output Normal/Reverse Normal
Shutdown threshold5%
value
Output volume during 0%
shutdown
Display selection
Input/Output indication
Indication time
00.00 (Continuous)

6.1 Indication after power-on
After power-on, warm-up status below (Fig. 6.1-1) is indicated for approx. 2sec.
Indicates the modelLights whenpower-on.

.

Indicates output type.
Indicates
for the default value 4 to 20mA
DC.

(Fig. 6.1-1)
After that, the unit switches to the Run mode as shown below (Fig. 6.1-2).
Indicates the input value.
Flasheswhen nothing is connected to the
input terminals.
Indicates the output volume corresponding to
the input value in a percentage form (%).
Indicates(0%) when nothing is connectedto the input terminals.
(Fig. 6.1-2)
10

6.2 Basic setup operation
Setup is conducted in the Setup mode.
To enter the Setup mode, press the
key while holding down the Sub-mode key in the
Run mode. (Fig. 6.2-1)
To set (select) each item, use theorkey, and register the value with the
key.
(Fig. 6.2-2)(1) Run mode2

To enter the Setup mode, press thekey 2 while holding down the
Sub-mode key 1 in the Run mode.

1(Fig. 6.2-1)(2) Setup mode

To proceed to each setting item andto register the set (selected) value,
use this key.

To set (or select)each item, use
these keys.
(Fig. 6.2-2)

6.3 Setup of the unit
The following shows all setup items. Set up the unit referring to the explanation of each item.
Display
IN

OUT

IN

OUT

Name, Function, Setting range
Default value
Set value lock
UnlockLocks the set values to prevent setting errors.
: Unlock: Lock (None of the set values and adjusted values can be changed.)
Frequency high limit value
SAFU-1 - : 9999mHz
SAFU-2 - (100Hz max): 100Hz
SAFU-3 - (50Hz min): 9999Hz
SAFU-4 - : 100kHz
Sets input frequency high limit value. (Frequency low limit value is fixed.)
SAFU-1 - (Ultra low frequency transmitter): 10 to 9999mHz
SAFU-2 - (Low frequency transmitter, 100Hz max.): 1 to 100Hz
SAFU-3 - (Low frequency transmitter, 50Hz min.) : 50 to 9999Hz
SAFU-4 - (Frequency transmitter): 1 to 100kHz

11

OUT

IN
OUT

IN

OUT

IN

OUT

IN

OUT

IN
OUT

IN
OUT

IN

OUT

0

Output 0% value

Sets the value (indicated on the Input display) at 0% output.
Setting range: -1999 to Output 100% value
9999
Output 100% value
Sets the value (indicated on the Input display) at 100% output.
Setting range: Output 0% value to 9999
No decimal point
Decimal point place
Selects the decimal point place.
: No decimal point: 1 digit after decimal point: 2 digits after decimal point: 3 digits after decimal point
4 to 20mA DC
Output type
Selects the output type.
: 4 to 20mA DC: 0 to 20mA DC: 0 to 12mA DC: 0 to 10mA DC: 1 to 5mA DC: 0 to 1V DC: 0 to 5V DC: 1 to 5V DC: 0 to 10V DC
NormalOutput Normal/Reverse
Selects either Normal mode (0.0 to 100.0%) or Reverse mode (100.0 to0.0%) for output status. (Fig. 6.3-1): Normal: Reverse
5%
Shutdown threshold value
Sets the threshold value to determine shutdown.
Setting range: 0 to 10% of frequency span
Output volume during shutdown0%
Sets output volume when shutting down.
Setting range: -5 to 105%
Input/Output indication
Display selection
Selects an indication type on the display.
: Input/Output indication: Input indication: Output indication: No indication (Only the power indicator is lit.)1200.00 (Continuous)
Indication time
Sets the indication time of the display after the final key operation.
Not available if No indication (Only the power indicator is lit) is selectedduring Display selection
After the indication time has elapsed, the displays go off (Only the power
indicator is lit.).
If power is turned on again, or if any of the,,or Sub-mode keys
are pressed while displays are unlit, the displays will light again.
Setting range:
00.00: Continuous
00.01 (1 second) to 60.00 (60 minutes) [Minutes.Seconds]

IN

OUT

6.3.1 When using this unit as a standard frequency transmitter
Set the Output Normal/Reverse selection to “Normal”. (Fig. 6.3-1)
6.3.2 When using the Reverse function
This function reverses the output (100 to 0%) that corresponds to the input (0 to 100%).
Set the Output Normal/Reverse selection to “Reverse”. (Fig. 6.3-1)
For SAFU-1 - (Ultra low frequency transmitter),
SAFU-2 - [Low frequency transmitter (100Hz max)]
Input

Pulse cycle
Output(Normal)

200ms

12 mA

90%

6mA

12mA

Output(Reverse)

For SAFU-3 SAFU-4 -6mA(Low frequency transmitter, 50Hz min),(Frequency transmitter)

Input

200ms

Output(Normal)Frequency sampling
period 500ms

12mA

90%
6mA

12mA

Output(Reverse)

6mA(Fig. 6.3-1)
13

7. Adjustment
Performs the output zero and span adjustments.
Connect a pulse generator to the input terminals of this instrument.
Connect a digital multimeter to output terminals.
7.1 Basic operation of adjustment
Perform adjustment in the Adjustment mode.
To enter Adjustment mode, hold down the(Fig. 7.1-1)
For output adjustment, use the(Fig. 7.1-2)

orTo revert to the Run mode, press the

key for approx. 3 seconds in the Run mode.

key, and register the value with the

key.

key again for approximately 3 seconds.

(1) Run mode

To enter Adjustment mode, pleasehold down the
key for approx.
3 seconds.

(Fig. 7.1-1)(2) Adjustment mode

To proceed to each adjustment
item in the Adjustment mode andto register the adjusted value,please use this key.

Please use thesekeys for adjustment.

(Fig. 7.1-2)

14

7.2 Adjustment
The following shows all adjustment items.
Adjust values referring to the explanation of each item below.

Display
IN

OUT

IN

OUT

Name, Function, Setting range
Default value
0.00%
Output zero adjustment
Adjusts output zero.
Input the value corresponding to 0% output, then adjust the value with theor
key while viewing the output value (on the digital multimeter).
When the output range lower limit is zero, (even if zero adjustment results
in a negative value), the output value will not be negative.
Setting range: -5.00 to 5.00%
Effective range of adjustment differs depending on the output types.
4 to 20mA DC: -5 to 5%
0 to 20mA DC: 0 to 5%
0 to 12mA DC: 0 to 5%
0 to 10mA DC: 0 to 5%
1 to 5mA DC : -5 to 5%
0 to 1V DC : 0 to 5%
0 to 5V DC : 0 to 5%
1 to 5V DC : -5 to 5%
0 to 10V DC : 0 to 5%
Output span adjustment
0.00%
Adjusts output span.
Input the value corresponding to 100% output, then adjust the value with theor
key while viewing the output value (on the digital multimeter).
Setting range: -5.00 to 5.00%
Effective range of adjustment: 95 to 105%

8. Unit operation

8.1 Indication after power-on
After power-on, the following warm-up status is indicated for 2 seconds (Fig. 8.1-1).

Indicates the model.

Lights after power-on.
Indicates the output type. (Fig. 8.1-1)
Indicates
for the default value 4 to 20mA DC.

(Table 8.1-1)
Output4 to 20mA DC
0 to 20mA DC
0 to 12mA DC
0 to 10mA DC
1 to 5mA DC(Fig. 8.1-1)
Output display

Output0 to 1V DC
0 to 5V DC
1 to 5V DC
0 to 10V DC
15Output display

8.2 Unit operation
The unit enters the Run mode after approx. 2-second warm-up as shown in (Fig. 8.2-1).
The input selected during Input selection is converted to the output selected during Output
type selection.
Indicates the input value.
Flasheswhen nothing is connected to the input terminals.

Indicates the output volume corresponding to the input value ina percentage form (%).
Indicates(0%) when nothing is connected to the input
terminals.
(Fig. 8.2-1)• Indication when input value is 10000 or more
For the indication of 10000 or more, the lower 4 digits of input value are flashing.
(e.g.) Indication of 10020
IN
Flashes.
• Indication when pulse is absent or when shutting down
When pulse is absent, 0 (zero) flashes.
When input frequency is lower than shutdown threshold value, the input value flashes.
• Overrange indication
In case of overrange (1.1 times frequency high limit value), "display.

" flashes on the Input• Indication time setting
If indication time is set, the displays will go off after the indication time has elapsed.
(Only the power indicator is lit.)
If power is turned on again, or if any of the,,or Sub-mode keys are pressed
while displays are unlit, the displays will light again.

9. Specifications

Input specifications
Frequency measurement via input signals
Open collector
Frequency range : SAFU-1 - (Ultra low frequency transmitter)
0.001 to 9.999Hz (Minimum range: 0.001 to 0.01Hz)
SAFU-2 - (Low frequency transmitter, 100Hz Max.)
0.001 to 100Hz (Minimum range: 0.001 to 1Hz)SAFU-3 - (Low frequency transmitter, 50Hz Min.)
0.001 to 9999Hz (Minimum range: 0.001 to 50Hz)
SAFU-4 - (Frequency transmitter)
0.001Hz to 100kHz (Minimum range: 0.001Hz to 1kHz)
Minimum pulse width: 4 s or more (for ON and OFF)
Input detection voltage/current: ON: Max. 30mA (30V or less)
OFF: Residual voltage, 0.5V or lessAction input conditions: ON: 200 or less
OFF: 100k or more16Voltage pulse
Frequency range: SAFU-1 -(Ultra low frequency transmitter)
0.001 to 9.999Hz (Minimum range: 0.001 to 0.01Hz)
SAFU-2 - (Low frequency transmitter, 100Hz Max.)
0.001 to 100Hz (Minimum range: 0.001 to 1Hz)SAFU-3 - (Low frequency transmitter, 50Hz Min.)
0.001 to 9999Hz (Minimum range: 0.001 to 50Hz)
SAFU-4 - (Frequency transmitter)
0.001Hz to 100kHz (Minimum range: 0.001Hz to 1kHz)
Minimum pulse width : 4 s or more (for High and Low)
Waveform: Rectangular, sine waveform or similar
Detection level: Low: 1V DC or less
High: 2V DC or more
Input impedance: 10k or more
Input amplitude: 2 to 50Vp-p

Line driver
AM26LS31 or equivalent
Receiver: AM26LS32 or equivalentContact switch for only SAFU-1 - (Ultra low frequency transmitter)
Frequency range: 0.001 to 5Hz
Minimum pulse width : 10ms or more (for ON and OFF)
Action input conditions : ON: 200 or less
OFF: 100k or more
Output specifications
DC current
Allowable load Zero adjustment
Span adjustment
Outputresistance
range
range
4 to 20mA DC
700 or less
-5 to 5%95 to 105%
0 to 20mA DC
700 or less0 to 5%95 to 105%
0 to 12mA DC
1.2k or less0 to 5%95 to 105%
0 to 10mA DC
1.2k or less0 to 5%95 to 105%
1 to 5mA DC
2.4k or less
-5 to 5%95 to 105%
DC voltage
Allowable load Zero adjustment
Span adjustment
resistance
range
range
0 to 1V DC
100 or more
0 to 5%95 to 105%
0 to 5V DC
500 or more
0 to 5%95 to 105%
1 to 5V DC
500 or more
-5 to 5%95 to 105%
0 to 10V DC
1k or more
0 to 5%95 to 105%
When the output range lower limit is zero, (even if zero adjustment results
in a negative value), the output value will not be negative.
OutputPerformance
Reference accuracy: Within 0.1%
Output accuracy: Within 0.1%
Display accuracy: Within Reference accuracy 1 digit
Frequency sampling period: 500ms

17

Response time

Temperature coefficientInsulation resistanceDielectric strength: 200msec+Pulse cycle for
SAFU-1 - (Ultra low frequency transmitter) and
SAFU-2 - (Low frequency transmitter, 100Hz Max.): 700msec+Frequency sampling period or less for
SAFU-3 - (Low frequency transmitter, 50Hz Min.) and
SAFU-4 - (Frequency transmitter): 0.015%/: Input – Output – Power: 10M or more, at 500V DC: Input – Output – Power: 2.0kV AC for 1 minute

General structure
Case
Front panel
Setting
Displays, indicator: Flame-resistant resin, Color: Light gray
: Membrane sheet: By the front keypad: Input display : 7 segments Red LED display 4 digits
Character size: 7.4 x 4.0mm (H x W)
Output display : 7 segments Green LED display 4 digits
Character size: 7.4 x 4.0mm (H x W)
Power indicator: Green LED
Installation specifications
Power supply: 100 to 240V AC 50/60Hz, 24V AC/DC 50/60Hz
Allowable voltage range : 85 to 264V AC, 20 to 28V AC/DCPower consumption: Approx. 9VA
Power supply for sensor : 12V DC 5%, 25mA
Ambient temperature: -5 to 55 (23 to 131 )Ambient humidity: 35 to 85%RH (Non-condensing)
Weight: Approx. 120g
Mounting: DIN rail mounting
External dimensions: W22.5 x H75 x D100mm
Attached functions• Power failure countermeasure: The setting data is backed up in the non-volatile IC memory.
• Self-diagnosis:
The CPU is monitored by a watchdog timer, and when an abnormal status is found on
the CPU, the unit is switched to warm-up status after turning all outputs off.
• Detecting unconnected sensor:
If pulse is not detected for a constant period, the unit will revert to the initial status (0Hz).
SAFU-1 - (Ultra low frequency transmitter): 1000sec
SAFU-2 - (Low frequency transmitter, 100Hz Max.) : 100sec
SAFU-3 - (Low frequency transmitter, 50Hz Min.) : 1sec
SAFU-4 - (Frequency transmitter): 1sec10. Troubleshooting
10.1 Indication
Problem
The input display is
flashing "".

Input value 0 (zero) is
flashing.

Presumed cause and solution• Check whether the input exceeds 1.1 times frequency highlimit value. Confirm the input signal source.
• Check whether the sensor is securely connected to the input
terminals of this instrument.
Connect the sensor terminals to the input terminals of this unit.
• Check whether the signal source is correct.
Check the input signal source.
• Check if pulse is absent.
Confirm the input signal source.

18

Input value is flashing.

• Check if the input value is lower than the shutdown thresholdvalue.
Confirm the input signal source.

The indication of the Input • AC leaks into the sensor circuit.
display is irregular or
Use an ungrounded type sensor.
unstable.
• There may be equipment that interferes with or makes noise
near the unit.
Keep equipment that interferes with or makes noise awayfrom the unit.
10.2 Key operation
Problem
Setting or adjustment is
not possible.
10.3 Running
Problem
Input value does notchange.

No output

Presumed cause and solution• “Lock” is selected during Set value lock selection.
Select “Unlock”.
Presumed cause and solution• The sensor may be out of order. Change the sensor.
• Check whether input and output wires are securely
connected to the I/O terminals of the instrument.
Ensure that input and output wires are securely connectedto the I/O terminals.
• Check whether the wiring of input and output is correct.
• Check whether Output 100% and Output 0% value havebeen set to suitable values.
• Check whether Output and Output Normal/Reverse havebeen selected correctly during Output selection and
Output Normal/Reverse selection.

11. Character table

Refer to the following default values.
Setup mode
Display
Setting item
Default value
Set value lock
UnlockFrequency high limit SAFU-1 - (Ultra low frequency transmitter):value
9999mHzSAFU-2 - (Low frequency transmitter, 100HzMax.): 100Hz
SAFU-3 - (Low frequency transmitter, 50Hz
Min): 9999Hz
SAFU-4 - (Frequency transmitter): 100kHz
0
Output 0% value
9999
Output 100% value
Decimal point place No decimal point
Output type
4 to 20mA DC
OutputNormalNormal/Reverse
Shutdown threshold 5%
value
Output volume0%
during shutdown
Display selection
Input/Output indication
Indication time
00.00 (Continuous)
Adjustment mode
19

Data

Display

Setting item

Default value

Output zero adjustment 0.00%
Output span adjustment 0.00%

20

Data

******* Inquiries *******For any inquiry about this unit, please contact the vendor where youpurchased the unit or our agency after checking the following.
(e.g.)• Model ........................………. SAFU• Serial number ….................... No. xxxxxx
In addition to the above, please let us know the details of malfunction, if any,
and the operating conditions.

SHINKO TECHNOS CO.,LTD.
OVERSEAS DIVISION

Reg. Office : 2-5-1, Senbahigashi, Minoo, Osaka, JapanURL: http://www.shinko-technos.co.jp
Tel : 81-72-727-6100
E-mail: overseas@shinko-technos.co.jp
Fax: 81-72-727-7006
No.SA71E2 2009.06