Product Information

ROC 424 S
ROQ 436 S
Absolute Rotary Encoders
with DRIVE-CLiQ Interface
for Safety-Related
Applications
Firmware 5306/2022

ROC 424 S/ROQ 436 S series
with synchro flange• Rotary encoders for absolute position measurement with safe singleturn information• Rotary encoders for separate shaft coupling• 01 C synchro flange• 92A solid shaft with flat
Specifications

ROC 424 S singleturn

ROQ 436 S multiturn

Functional safety
for applications with up toAs a single-encoder system for monitoring functions and control-loop functions:• SIL 2 as per EN 61508 (further basis for testing: IEC 61800-5-3)• Category 3, PL d, according to EN ISO 13849-1:2015
Safe in the singleturn rangePFH1)

 27 · 10–9 (probability of dangerous failure per hour)

Safe position2)

Encoder: ±1.76° (safety-related measuring step: SM = 0.7°)
Mechanical coupling: ±0° (fault exclusion for stator coupling and shaft breakage,designed for accelerations  300 m/s2)

Interface

DRIVE-CLiQ

Ordering designation

DQ01

Firmware01.32.26.53

SINAMICS/SIMOTION3) V4.4 HF4SINUMERIK with safety3)

 V4.4 SP2

Position values per revolution

16 777 216 (24 bits)

Revolutions–Calculation time TIME_MAX_ACTVAL4)

 8 µsSystem accuracy±20”

Electrical connection5)8-pin M12 radial flange socket* (male) or 1 m EPG cable with M12 coupling

Supply voltage

DC 24 V (10 V to 28.8 V);
up to DC 36.0 V possible without limitation of functional safety

Power consumption (max.)

At 10 V:At 28.8 V:

Current consumption (typical)

At 24 V: 38 mA (without load)

Cable length6)

 40 m4096 (12 bits)

 950 mW
 1000 mW

At 10 V:At 28.8 V:

 1050 mW
 1150 mW

At 24 V: 43 mA (without load)* This preferred version is available on short notice1)
For use at  1000 m above sea level ( 6000 m above sea level upon request)2)	Further tolerances may arise in the downstream electronics after position value comparison (contact mfr. of the downstream electronics)3)	Information from Siemens as per the document “Certified encoders with DRIVE-CLiQ Dependencies on SIMOTION / SINUMERIK andSINAMICS Hardware and Software versions” (version: 06/2021)
4)	The calculation time TIME_MAX_ACTVAL specifies the earliest time (relative to the request time) after which the transfer of data fromthe encoder to the control can begin (data such as position or diagnostic data)5)	Cable outlet with cable length > 0.5 m requires strain relief for the cable;flange socket versions may be used only with plastic-coated M12 mating connectors
6)
See also the Cables and Connectors and Interfaces of HEIDENHAIN Encoders brochures
DRIVE-CLiQ is a registered trademark of Siemens Aktiengesellschaft
A = Encoder bearing
M1 = Measuring point for operating temperature
M2 = Measuring point for vibration; see also D 741714
1 = Screw: M4 – 8.8 with material bonding anti-rotation lock; tightening torque: 2.65 Nm ±0.1 Nm;
minimum engagement depth: 6 mm
2 = If permissible interface pressure PG  280 N/mm2, use a washer
3 = For material properties, see Mounting
4 = Direction of shaft rotation for ascending position values
5 = Connector coding

2

Product Information ROC 424 S/ROQ 436 S   06/2022

Product Information ROC 424 S/ROQ 436 S   06/2022

3ROC 424 S/ROQ 436 S series
with clamping flange• Rotary encoders for absolute position measurement with safe singleturn information• Rotary encoders for separate shaft coupling• 39A clamping flange• 03 D solid shaft with flat
Specifications

ROC 424 S singleturnShaft

92 A solid shaft D = 6 mm with flat1)

ROQ 436 S multiturnShaft speed 15 000 rpm

 12 000 rpm

Starting torque at 20 °C (typical)

 0.01 Nm

Moment of inertia of rotor

 2.9 · 10–6 kgm2

Angular acceleration of rotor 1 · 105 rad/s2

Shaft load

Axial:  40 N; radial:  60 N at shaft end

Vibration 55 Hz to 2000 Hz2)
Shock 6 ms2
 300 m/s (EN 60068-2-6)
 2000 m/s2 (EN 60068-2-27)

Operating temperature3)–40 °C to 100 °C

Trigger threshold for exceeded
temperature error message4)

117 °C in the scanning ASIC (measuring accuracy of internal temperature sensor.
±2 K at 117 °C)

Relative humidity

 93% (40 °C/21 d as per EN 60068-2-78), condensation excluded

Protection rating EN 60529

IP67 on housing; IP64 at shaft inlet(read about insulation under Electrical safety in the Interfaces of HEIDENHAIN Encoders
brochure; contamination from the ingress of fluids must be avoided)

Mass 0.3 kg

ID number

1179140-05*
1179140-04

1176752-05*
1176752-04* This preferred version is available on short noticeAt  2 position requests per revolution2)
10 Hz to 55 Hz constant over 4.9 mm peak to peak3)	For information on operating temperature, shaft speed, and supply voltage, see General mechanical information in the Rotary Encoders
brochure4)
The internal temperature evaluation is not designed for functional safety
1)

A = Encoder bearing
M1 = Measuring point for operating temperature
M2 = Measuring point for vibration; see also D 741714
1 = Screw: M4 – 8.8 with material bonding anti-rotation lock; tightening torque: 2.65 Nm ±0.1 Nm;
minimum engagement depth: 6 mm
2 = If permissible interface pressure PG  280 N/mm2, use a washer
3 = For material properties, see Mounting
4 = Direction of shaft rotation for ascending position values
5 = Connector coding

4

Product Information ROC 424 S/ROQ 436 S   06/2022

Product Information ROC 424 S/ROQ 436 S   06/2022

5Specifications

ROC 424 S singleturn

ROQ 436 S multiturn

Functional safety
for applications with up toAs a single-encoder system for monitoring functions and control-loop functions:• SIL 2 as per EN 61508 (further basis for testing: IEC 61800-5-3)• Category 3, PL d, according to EN ISO 13849-1:2015
Safe in the singleturn rangePFH1)

 27 · 10–9 (probability of dangerous failure per hour)

Safe position2)

Encoder: ±1.76° (safety-related measuring step: SM = 0.7°)
Mechanical coupling: ±0° (fault exclusion for stator coupling and shaft breakage,designed for accelerations  300 m/s2)

InterfaceDRIVE-CLiQ

Ordering designation

SpecificationsROC 424 S singleturnShaft

03 D solid shaft D = 10 mm with flat1)

ROQ 436 S multiturnShaft speed 15 000 rpm

Starting torque at 20 °C (typical)

 0.01 Nm

Moment of inertia of rotor

 2.9 · 10–6 kgm2

Angular acceleration of rotor 1 · 105 rad/s2

Shaft load

Axial:  40 N; radial:  60 N at shaft end

DQ01

Vibration 55 Hz to 2000 Hz2)
Shock 6 ms2
 300 m/s (EN 60068-2-6)
 2000 m/s2 (EN 60068-2-27)

Firmware01.32.26.53

Operating temperature3)–40 °C to 100 °C

SINAMICS/SIMOTION

 V4.4 HF4SINUMERIK with safety

 V4.4 SP2Trigger threshold for exceeded
temperature error message4)

117 °C in the scanning ASIC (measuring accuracy of internal temperature sensor.
±2 K at 117 °C)

Relative humidity

Position values per revolution

16 777 216 (24 bits)

 93% (40 °C/21 d as per EN 60068-2-78); condensation excludedRevolutions–Protection rating EN 60529

Calculation time TIME_MAX_ACTVAL4)

 8 µs

IP67 for housing; IP64 at shaft inlet(read about insulation under Electrical safety in the Interfaces of HEIDENHAIN Encoders
brochure; contamination from the ingress of fluids must be avoided)

MassSystem accuracy±20”

 0.3 kg5)
8-pin M12 radial flange socket* (male) or 1 m EPG cable with M12 coupling

ID numberElectrical connection

1179141-04*
1179141-05

Supply voltage

DC 24 V (10 V to 28.8 V);
up to DC 36.0 V possible without limitation of functional safety

Power consumption (max.)

At 10 V:At 28.8 V:

Current consumption (typical)

At 24 V: 38 mA (without load)

Cable length6)

 40 m4096 (12 bits)

 950 mW
 1000 mW

At 10 V:At 28.8 V:

 1050 mW
 1150 mW

At 24 V: 43 mA (without load) 12 000 rpm

1176753-06*
1176753-05* This preferred version is available on short noticeAt  2 position requests per revolution2)
10 Hz to 55 Hz constant over 4.9 mm peak to peak3)	For information on operating temperature, shaft speed, and supply voltage, see General mechanical information in the Rotary Encoders
brochure4)
The internal temperature evaluation is not designed for functional safety
1)* This preferred version is available on short notice1)
For use at  1000 m above sea level ( 6000 m above sea level upon request)2)	Further tolerances may arise in the downstream electronics after position value comparison (contact mfr. of the downstream electronics)3)	Information from Siemens as per the document “Certified encoders with DRIVE-CLiQ Dependencies on SIMOTION / SINUMERIK andSINAMICS Hardware and Software versions” (version: 06/2021)
4)	The calculation time TIME_MAX_ACTVAL specifies the earliest time (relative to the request time) after which the transfer of data fromthe encoder to the control can begin (data such as position or diagnostic data)5)	Cable outlet with cable length > 0.5 m requires strain relief for the cable;flange socket versions may be used only with plastic-coated M12 mating connectors
6)
See also the Cables and Connectors and Interfaces of HEIDENHAIN Encoders brochure
DRIVE-CLiQ is a registered trademark of Siemens Aktiengesellschaft

6

Product Information ROC 424 S/ROQ 436 S   06/2022

Product Information ROC 424 S/ROQ 436 S   06/2022

7

MountingIntegrated temperature evaluation

Mounting
The rotary encoders are centered bymeans of the centering collar of thesynchro flange or of the clamping flange
and are secured with screws at their front.
Mechanical fault exclusion can be ensured
only when mounting with three M4 screwsof strength class 8.8 and at a minimum
engagement depth of 6 mm in the rotary
encoder flange. Screws are not included
in delivery. The machine designer is
responsible for specifying a material
bonding anti-rotation lock for the screws
depending on the application.

These rotary encoders feature an internal
temperature sensor integrated into theencoder electronics. The digitized tem­
perature value is transmitted purely seriallyvia the DRIVE-CLiQ interface. Please bearin mind that neither the temperature
measurement nor the transmission of thetemperature value is safe in terms offunctional safety.

Upon reaching a trigger threshold for theinternal temperature sensor, these rotary
encoders issue an “Alarm 405” errormessage. This threshold may varydepending on the encoder and is stated in
the specifications. During operation, it isrecommended that the temperature bekept adequately below the error-message
threshold.

The temperature measured by the internal
temperature sensor is higher by a devicespecific and application-specific amountthan the temperature at measuring point M1,
as shown in the dimension drawing.

The encoder’s intended use requires
compliance with the operating temperature
at measuring point M1.

Fault exclusion was calculated based on amaterial bonding anti-rotation lock with athread friction coefficient of between 0.1
and 0.16. The holes for the screws must be
designed in accordance with EN 20273(medium). The washers must be used formaterials with permissible interfacepressures of ≤ 280 N/mm2.

More information:
For the customer-side mounting design,
the material specifications for steel apply
to the customer-side shaft. For thecustomer-side stator, the material
specifications for aluminum apply.
Note the other material properties in the
Rotary Encoders brochure (ID349529-xx).

Rotary encoder with synchro flange

The firmware version can be read out overthe DRIVE-CLiQ parameter “Act_FW_Version” (index 0). The final two digits ofthe displayed value are decisive.

Rotary encoder with clamping flange

With EnDat 2.2 encoders, valuation
numbers can be read cyclically from theencoder to evaluate its functioning. The
valuation numbers provide the current
state of the encoder and ascertain theencoder’s “function reserves.” These
function reserves are also transmitted via
the DRIVE-CLiQ interface and can bedisplayed in the higher-level control. Further
information is available from HEIDENHAIN
upon request.

Further information:
For mounting information and mounting
aids, see the mounting instructions inthe Rotary Encoders brochure.

8Product Information ROC 424 S/ROQ 436 S   06/2022

Product Information ROC 424 S/ROQ 436 S   06/2022

9

Electrical connection

Pin layout
8-pin M12 flange socket or 8-pin M12 couplingPower supply

Serial data transmission

15763428UP0V

TXP

TXN

RXPRXN//WhiteWhite/Green

VioletYellow

GrayPinkBlueBrown/Green

Cable shield connected to housing; UP = Power supply voltage
Unused pins must not be assigned!

More information:
For connecting and adapter cables, see
the Cables and Connectors brochure(ID 1206103-xx).

DRIVE-CLiQ is a registered trademark of Siemens Aktiengesellschaft

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

1380310 · 00 · A · 02 · 06/2022 · 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.
More information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Operating Instructions				
1379885