Product Information

MRP 8100 Series
Angle Encoder Modules

01/2021

MRP 8100 series
Angle encoder modules with integrated encoder and bearing• Compact dimensions• High measuring and bearing accuracy• Hollow shaft  80 mm• Axial load up to 1500 N
2.5A-AB
2:1

k = Required mating dimensions
1 = Tightening torque of the M5 – 8.8 cylinder head screws: 4.5 Nm ±0.25 Nm
2 = Tightening torque of the M4 – 8.8 cylinder head screws: 2.5 Nm ±0.15 Nm
3 = Marking of the 0° position ±5°
4 = Customer is responsible for shielding cover
5 = Direction of shaft rotation for ascending position values
6 =	Recommended direction of force;the recommended direction of force is to be maintained if dynamic overloading is possible
7 = Cable support

2Product Information MRP 8100   01/2021

A-A

k = Required mating dimensions
1 = Tightening torque of the M5 – 8.8 cylinder head screws: 4.5 Nm ±0.25 Nm
2 = Tightening torque of the M4 – 8.8 cylinder head screws: 2.5 Nm ±0.15 Nm
3 = Marking of the 0° position ±5°
4 = Direction of shaft rotation for ascending position values
5 =	Recommended direction of force;the recommended direction of force is to be maintained if dynamic overloading is possible

Product Information MRP 8100   01/20213

A-A

k = Required mating dimensions
1 = Tightening torque of the M5 – 8.8 cylinder head screws: 4.5 Nm ±0.25 Nm
2 = Tightening torque of the M4 – 8.8 cylinder head screws: 2.5 Nm ±0.15 Nm
3 = Marking of the 0° position ±5°
4 = Direction of shaft rotation for ascending position values
5 =	Recommended direction of force;the recommended direction of force is to be maintained if dynamic overloading is possible

4Product Information MRP 8100   01/2021

Alternativeoption
Alternative mounting
Montagemöglichkeit

1 = Rotor
2 = Stator (do not use as rotor)
3 = Required mounting dimensions for the transfer of the maximum permissible load as per the specifications
4 = Optional: recommended mating dimensions
5 = Do not use the edge as a stop surface!
6 =	Screw: ISO 4762 – M5 – 8.8. Materially bonding threadlocker required. Washer: ISO 7092 – -5 – 200HV;
tightening torque: 4.5 Nm ±0.25 Nm
7 =	Screw: ISO 4762 – M4 – 8.8. Materially bonding threadlocker required. Washer: ISO 7092 – -4 – 200HV;
tightening torque: 2.5 Nm ±0.15 Nm

Product Information MRP 8100   01/2021

5

Specifications

Encoders

Incremental
MRP 8180

Absolute
MRP 8110

Measuring standard

OPTODUR circular scale

DIADUR circular scale

Signal periods

63 00032 768System accuracy*±1” or ±2”

Position error per signal period±0.10”±0.20”

Repeatability

From both directions: 0.2”

From both directions: 0.5”

RMS position noiseTypically 0.003”

Typically 0.010”

Interface 1 VPPEnDat 2.2

Ordering designation–

EnDat22

Position values per rev.

–

29 bits

Clock frequency
Calculation time tcal–

 16 MHz 5 µsReference marks

150 (distance-coded)–

Cutoff frequency –3 dB

 500 kHz–Electrical connection

1.5 m cable with 15-pin D-sub connector;
interface electronics inside the connector

15-pin header; adapter cable with quick connector
as accessory

Cable length 30 m (with HEIDENHAIN cable)

Supply voltage

DC 5 V ±0.25 V

DC 3.6 V to 14 V

Power consumption (max.)

5.25 V:  950 mW

3.6 V:  1.1 W
14 V:  1.3 W

Current consumption (typical)

175 mA (without load)

5 V: 140 mA (without load)* Please select when ordering

MRP 8180

6MRP 8110

MRP 8110 with cover

Product Information MRP 8100   01/2021

Bearings

Incremental
MRP 8180

Shaft

Hollow through shaft D = 80 mm1)

Max. permissible axial load

1500 N (centered load)

Max. permissible radial load1)

800 N

Absolute
MRP 8110Max. permissible tilting torque1) 100 Nm
Contact stiffness

Axial: 1000 N/µm
Radial: 500 N/µm(calculated values)

Resistance to tilt

1700 Nm/mrad (calculated value)

Mechanically perm. speed

300 rpm

Moment of friction

 0.4 Nm

Starting torque 0.4 Nm

Max. transferable shaft torque1)

20 Nm

Moment of inertia of rotor

5 · 10-3 kgm2

Radial guideway accuracy

 0,25 µm (measured at distance h = 75 mm from the mating surface of the rotor2))

Non-reproducible radial
guideway accuracy

 0.30 µm (measured at distance h = 75 mm from the mating surface of the rotor2))

Axial guideway accuracy

 ±0.25 µm

Axial runout of the shaft* 4 µm or  2 µm

Wobble of the axis

0.7”

Vibration 55 Hz to 2000 Hz
Shock 6 ms

 200 m/s2 (EN 60068-2-6)
 100 m/s2 (EN 60068-2-27)(without load)

Protection EN 605293)

IP20

Operating temperature
Storage temperature

0 °C to 50 °C
0 °C to 50 °C

Relative air humidity

 75 % without condensation

Mass4 kgIP004) or IP40

* Please select when ordering
1)
Purely static load, without additional vibrations or shock load2)
See the Measuring and bearing accuracy section in the Angle Encoder Modules brochure3)
When mounted4)
The electromagnetic compatibility of the complete system must be ensured by taking the correct measures during installation.

Product Information MRP 8100   01/2021

7Electrical connection» 1 VPP pin layout
15-pin D-sub connector

Power supply

Incremental signals

Other signals

4

122

101

93

1114

7

5/6/8/15

UPSensor
UP0V

Sensor
0V

A+

A–

B+

B–

R+

R–

VacantBrown/
GreenBlueWhite/
GreenWhiteBrown

GreenGray

PinkRedBlack/1)

13/

Vacant1) Vacant
VioletYellow

EnDat pin layout
8-pin M12 couplingor flange socket15-pin
PCB connector
15Power supply

Position values

M128251347615

13

1114

1278910UPSensor
UP0VSensor
0VDATA

DATA

CLOCK

CLOCK

Brown/GreenBlue

White/GreenWhite

GrayPink

VioletYellow

Cable shield connected to housing; UP = Power supply voltage
Sensor: The sense line is connected in the encoder with the corresponding power line.
Vacant pins or wires must not be used!

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1291006 · 01 · C · 02 · 01/2021 · PDFThis 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 made.
Further information:
Comply with the requirements described in the following documents to ensure thecorrect operation of the encoder.
• Angle Encoder Modules brochure1102713-xx• Interfaces of HEIDENHAIN Encoders brochure
1078628-xx• Cables and Connectors brochure1206103-xx• Mounting Instructions
1289121-xx