Product Information

RCN 6000
Absolute Angle Encoderwith Integral Bearing andLarge Hollow Shaft04/2023

RCN 6000 series
Absolute angle encoder with• Integral stator coupling• Hollow through shaft (¬ 180 mm)• System accuracy: ±2”
AbsoluteRCN 6310

Shaft coupling via through hole

Shaft coupling via threadkk

Measuring standard

METALLUR graduation with absolute track and incremental track (19 998 lines)

System accuracy±2”

Position error
per signal period

 ±0.3”Functional safety
for applications with up to• SIL 2 as per EN 61508 (further basis for testing: EN 61800-5-2)• Category 3, PL d as per EN ISO 13849-1:2015

PFH

 25 · 10Safe position1)

Encoder: ±0.22° (safety-related measuring step SM = 0.088°)
Mechanical coupling: fault exclusion for the loosening of the housing/flange and hollow shaft

Interface

EnDat 2.2

Ordering designation

EnDat22

Position values per rev.

268 435 456 (28 bits)

Electrically permissible
speed 800 rpm for continuous position value

Clock frequency
Calculation time tcal

 16 MHz 5 µsElectrical connection

Separate adapter cable connectable to encoder via quick disconnect–92)(up to 2000 m above sea level)

Cable length 100 mSupply voltage

DC 3.6 V to 14 VPower consumption3) (max.) 3.6 V:  1.1 W; 14 V:  1.3 W
Current consumption(typical)

5 V: 140 mA (without load)1)	Further tolerances may arise in the downstream electronics after position value comparison(contact mfr. of the downstream electronics).
2)
With HEIDENHAIN cable:  8 MHz
3)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure

A = Bearing of mating shaft
d = Compressed air inlet
k = Required mating dimensions
1 = Mark for 0° position ±2.5°
2 = Cable support
3 = Free space for customer
4 = Tolerance specification includes mountingtolerances and thermal expansion.
No dynamic movement permitted.

25 = Screw: ISO 4762-M6-8.8; tightening torque: 7 Nm ±0.42 Nm
Washer: ISO 7092-6-200HV
6 = Screw: ISO 4762-M6-8.8; tightening torque: 8 Nm ±0.48 Nm
Washer: ISO 7092-6-200HV
7 = Thread engagement
8 = Direction of shaft rotation for ascending position values

RCN 6000 Product Information   04/2023

RCN 6000 Product Information   04/20233Absolute
RCN 6310
Shaft

Hollow through shaft D = 180 mm

Mech. permissible speed 200 rpm4)

Starting torque (at 20 °C)

Typically  2.0 Nm

Moment of inertia

Rotor (hollow shaft): 40 · 10–3 kgm2; stator (housing/flange): 52 · 10–3 kgm2

Radial load (typical)

4.0 N per µm rotor-to-stator radial error

Permissible axial motion ofmeasured shaft±0.3 mm5)Natural frequency

 650 Hz

Permissible range for customer
2Vibration 55 Hz to 1400 Hz
Shock: 6 ms

 200 m/s (EN 60068-2-6)
 200 m/s2 (EN 60068-2-27)

Operating temperature

0 °C to 50 °C

Protection EN 60529

IP64Mass 6.5 kg4)
5)

4

The operating temperature (i.e., thetemperature in the vicinity of the angleencoder) influences the permissible
shaft speed (see graph). At a working
temperature of 50 °C, for example, themaximum permissible speed is 200 rpm;
at 20 °C, it is 500 rpm. Higher speeds ofup to 800 rpm are permissible for shortperiods. In this case, consultation isrequired.

Shaft speed in rpm

Mechanically permissible speed

Operating temperature in °CPermissible speed and operating temperature for the RCN 6000

Higher shaft speeds possible depending on the operating temperature (see Mechanically permissible speed)
Range includes mounting tolerances and thermal expansion; no dynamic movement permitted

RCN 6000 Product Information   04/2023

RCN 6000 Product Information   04/2023

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Functional safety

Functionally safe axes
Driven axes on machine tools are generally
a significant hazard for humans. It must beensured that the machine does not makeany uncontrolled movements, especiallywhen a person is interacting with themachine (e.g., during workpiece setup).
This requires position information about theaxes in order for a safety function to beimplemented. As an evaluating safety
module, the control must be able to detect
faulty position information and reactaccordingly.

Various safety strategies can be pursued,
depending on the topology of the axis andthe evaluation capabilities of the control. Ina single-encoder system, for example, only
one encoder per axis is evaluated for thesafety function. But on axes with twoencoders, such as a rotational axis with arotary encoder and an angle encoder, thetwo redundant position values can becompared with each other in the controller.
Safe fault detection can be ensured only if
the controller and the encoder are properly
matched and configured. Please note thatthe safety designs of control manufacturers
differ from one another. As a result, therequirements to be fulfilled by theconnected encoders may partially differ aswell.

Type-examined encoders
HEIDENHAIN angle encoders with an
integral bearing are successfully used on
different controls in a wide variety of safety
designs. This particularly applies to thetype-examined RCN 6000 angle encoders
with the EnDat interface. These encoders
can be operated as single-encoder sys­
tems in conjunction with a suitable control
in applications with the control category
SIL 2 (as per EN 61508) or performancelevel “d” (as per EN ISO 13849). Unlike
incremental encoders, the RCN 6000
absolute angle encoders always provide asafe absolute position value immediately
after switch-on or after a power outage.
Reliable position transmission is based on
two independently generated absolute
position values and on error bits provided
to the safe control. The purely serial datatransmission also provides other benefits,including greater reliability, improved
accuracy, diagnostic capabilities andreduced costs through simpler connection
technology.

Fault exclusion for the loosening of
the mechanical connection
Along with an encoder’s data interface, its
mechanical connection to the motor is also
safety-relevant. The standard for electricmotors, EN 61800-5-2, requires that theloosening of the mechanical connection
between the encoder and the motor beconsidered as a fault. Since it cannot be
guaranteed that the controller will detectsuch errors, fault exclusion for theloosening of the mechanical connection isrequired in many cases.
For the RCN 6000 series, the fastening
method permits this type of fault exclusion.
To find out more, please refer to the tablebelow.

Fault exclusion is thereby possible for theloosening of the mechanical connection
between the encoder and the machine
shaft / customer fastening components.
For designing the mechanical fault
exclusion for other purely customer-sideconnections, the following encoder torquemust be taken into account:MMax = J · Þ + 20 Nm
J:	Moment of inertia of the encoder (for therotor or stator, see the specifications)
Þ:	Max. angular acceleration in theapplication

1)

Mechanicalconnection

Fastening

Safe position for themechanical connection2)

Housing/flange

M6 ISO 4762 8.8 screws±0°

Hollow shaft
Shaft coupling

M6 ISO 4762 8.8 screws

±0°

1)

Electrical connection
Mechanical connection

Further information:	Use a suitable anti-rotation lock for the screw connection
Fault exclusion is granted only for the explicitly mentioned mounting options

2)

The safety-related characteristic values
are listed in the encoder specifications.
These characteristic values are explainedin the Technical Information document
Safety-Related Position Encoders.

Safe encoder

Safe controller

Safety-related position
measuring system
Safety-related position measuring system with mechanical connection and electrical interface6

RCN 6000 Product Information   04/2023

RCN 6000 Product Information   04/2023

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Mounting(with mechanical fault exclusion)

Electrical connection

Mounting
The housing of the RCN 6000 is firmly
attached to the mounting surface of themachine by means of the mounting flangeand the centering collar. Coupling of thehollow shaft with the machine shaft isperformed via through holes or a thread.

CablesPUR adapter cables

222

 4.5 mm; 1 × (4 × 0.09 mm ) + 4 x 0.16 mm ; AP = 2 x 0.16 mm

Adapter cablewith 8-pin M12 coupling (male)

729681-xx

Adapter cablewith 15-pin D-sub connector (female)

1119394-xx

PUR adapter cables and connecting cable2)
22
 6 mm; 2 × (2 x 0.09 mm + 2 × (2 x 0.16 mm ); AP = 2 x 0.16 mm

Connecting cable with 8-pin M12 connector(female) and 8-pin M12 coupling (male)1036372-xx

Adapter cable with 8-pin M12 connector(female) and 15-pin D-sub connector (female)

1036521-xx

Adapter cable with 8-pin M12 connector(female) and 15-pin D-sub connector (male)

1036526-xx

AP: Cross section of power supply lines¬: Cable diameter (for bend radii see the brochure Interfaces of HEIDENHAIN Encoders)Note for safety-related applications: Only completely assembled HEIDENHAIN cables are qualified.
Do not modify cables or exchange their connectors without first consulting with HEIDENHAIN Traunreut.
For more cables, see the brochure Angle Encoders with Integral Bearing.

Shaft coupling via through holes

Shaft coupling via threads

Permissible angular acceleration
1000 rad/s2
Material
The materials stated in the following tablemust be used for the machine shaft andfastening components.

Mating shaft

Mating stator

Material

Ferrous materials (steel/cast iron materials)

Tensile strength Rm

 600 N/mm2

 250 N/mm2

Shear strength τa 390 N/mm2

 290 N/mm2

Interface pressure pG

 660 N/mm2

 275 N/mm2

Elastic modulus E110 000 N/mm to 215 000 N/mmCoefficient of thermal
expansion Þtherm(at 20 °C)–6 –1
10 · 10 K to
17 · 10–6 K–1

Mounting temperature

All of the information regarding screw connections isbased on a mounting temperature of 15 °C to 35 °C

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DR. JOHANNES HEIDENHAIN GmbH
Dr.-Johannes-Heidenhain-Straße 583301 Traunreut, Germany +49 8669 31-0
 +49 8669 32-5061
info@heidenhain.dewww.heidenhain.com

8RCN 6000 Product Information   04/2023

1151754 · 04 · A · 02 · 04/2023 · PDF

This Product Information document supersedes all previous editions, which thereby
become invalid. The basis for ordering from HEIDENHAIN is always the Product
Information document edition valid when the order is placed.
Further information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Brochure: Angle Encoders with Integral Bearing
591109• Brochure: Interfaces of HEIDENHAIN Encoders
1078628• Brochure: Cables and Connectors
1206103• Mounting instructions: RCN 6000
1234453• Technical Information: Safety-Related Position Measuring Systems
596632For implementation in a controller:• Specification for safe controller
533095For brochures and product information documents, visit www.heidenhain.com.

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