Product Information

MRS 2200 Series
Angle Encoder Modules

05/2021

MRS 2280

MRS 2281

Angle encoder module with integrated encoder and bearing• Compact dimensions• High measuring and bearing accuracy• Hollow shaft  10 mm• High resistance to tilt

Angle encoder module with integrated encoder and bearing• Compact dimensions• High measuring and bearing accuracy• Hollow shaft  10 mm• High resistance to tilt
64±0.1+0.1
31 0(8)15±0.17.5±0.1

 54±0.1

AM4 (6x)-0.020( 30 f7 -0.041)

0.02 C-D-E( 3)

8±0.36A






°

60

6x

9.7±0.1

0 1(3x-0.

10.5

60°±0.1° (3x)10.5C)

0.2 B A

0.5x15°19

0.03 C-D-E-0.016

C(A 15 f7 -0.034)

7.5+0.1

41-0.2







D
B

2.6x45°

8.78

+0.1

210

9.3

 22





 24

7.58





.

D

0.03 C-D-E

5.95

0.05 C-D-E

10x17°



0.2 B A

60°±0.1°(3x)M4 (6x)+1

BE

5.2 0A

10±0.2E

0.2 B A

 3H7 x 6 (2x)

11.25



 3H7 (3x)

9±0.5A-A

1 = Tightening torque of the M3 – 8.8 cylinder head screw: 1.1 Nm ±0.05 Nm
2 = Tightening torque of the M4 – 8.8 cylinder head screw: 2.5 Nm ±0.13 Nm
3 = Mark for 0° position ±5°
4 = Direction of shaft rotation for ascending position values
5 = LED position
6 = Permitted for shaft clamping
7 = Area available for flex PCB

2

1 = Tightening torque of the M3 – 8.8 cylinder head screw: 1.1 Nm ±0.05 Nm
2 = Tightening torque of the M4 – 8.8 cylinder head screw: 2.5 Nm ±0.13 Nm
3 = Mark for 0° position ±5°
4 = Direction of shaft rotation for ascending position values
5 = LED position
6 = Permitted for shaft clamping
7 = Area available for flex PCB

Product Information MRS 2200 Series   05/2021

Product Information MRS 2200 Series   05/2021

3

Specifications

Encoder characteristics

Specifications

Incremental
MRS 2280

Bearing properties

Incremental

MRS 2281

MRS 2280

MRS 2281

Measuring standard

DIADUR circular scale

Shaft

Signal periods

2048

Max. permissible axial load

100 N (centered load)

System accuracy±10”Max. permissible radial load1)45 N

Position error per signal period±1.5”

Max. permissible tilting torque1) 5 Nm

2.5 NmRepeatability

From both directions: 3”

Contact stiffness

RMS position noise

Typically 0.07”

Axial: 54 N/µm
Radial: 153 N/µm
(calculated values)

Axial: 27 N/µm
Radial: 77 N/µm
(calculated values)

Interface 1 VPPResistance to tilt

52 Nm/mrad (calculated value)

24 Nm/mrad (calculated value)

Reference marks

One

Mech. permissible speed

1000 rpm

Cutoff frequency –3 dB 210 kHz

Moment of friction

 20 mNm

 15 mNm

Electrical connection

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

Starting torque 30 mNm

 20 mNm

Cable length 30 m (with HEIDENHAIN cable)

Max. transferable shaft torque1)

1 Nm

Supply voltage

DC 5 V ±0.25 V

Moment of inertia of rotor

1.5 · 10-5 kgm2

0.9 · 10-5 kgm2

Power consumption (max.)

5.25 V:  700 mW

Radial guideway accuracy≤ 0.8 μm2)

≤ 2.4 μm2)

Current consumption (typical)

Without load: IP = 60 mA; max. 120 mA
With load:max. 130 mA

Non-reproducible radialguideway accuracy≤ 0.5 μm2)

≤ 1.6 μm2)

Axial runout of the surface

 20 µm

 30 µm

Radial runout

 30 µm

 50 µm

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 60529

IP003)

Operating temperature
Storage temperature

0 °C to 50 °C
0 °C to 50 °C

Relative air humidity

 75 % without condensation

Mass

0.34 kg (without cable or connector)

Hollow through shaft D = 10 mm1)

50 N (centered load)

0.23 kg (without cable or connector)

1)

Purely static load, without additional vibrations or shock load. The overlapping of individual loads is not taken into account.
 easured at distance h = 20 mm from the mating surface of the rotor; see Measuring and bearing accuracy in theM
Angle Encoder Modules brochure3)
The electromagnetic compatibility of the complete system must be ensured by taking the correct measures during installation.
2)

MRS 2280

4

MRS 2281

Product Information MRS 2200 Series   05/2021

Product Information MRS 2200 Series   05/2021

5Interfaces» 1 VPP incremental signals

HEIDENHAIN encoders with » 1 VPP
interface provide voltage signals that canbe highly interpolated.

Electrical connection

Pin layout

Signal period
360° elec.

14-pin PCB connector
14The sinusoidal incremental signals A andB are phase-shifted by 90° elec. and haveamplitudes of typically 1 VPP. The illustrated
sequence of output signals—with B
lagging A—applies to the direction ofmotion shown in the dimension drawing.

Power supply

The reference mark signal R has a uniqueassignment to the incremental signals.
The output signal may be lower next to thereference mark.

Alternative
signal shape(rated value)

Incremental signals

Other signals

1b7a5b3a6b2a3b5a4b4a/

UPSensor
UP0VSensor
0V

A+

A–

B+

B–

R+R–

VacantBrown/
GreenBlueWhite/
GreenWhiteBrown

GreenGrayPink

RedBlack///

Vacant Vacant
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!

A, B, R measured with oscilloscope in differential mode

1 VPP cable

Further information:

PUR output cable ¬ 3.7 mm

For detailed descriptions of all available
interfaces, as well as general electricalinformation, please refer to the Interfacesof HEIDENHAIN Encoders brochure.

66 × (2 × 0.05 mm2)With 14-pin PCB connector and15-pin D-sub connector (male)

Product Information MRS 2200 Series   05/2021

Product Information MRS 2200 Series   05/2021

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1313169 · 01 · A · 02 · 05/2021 · 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:
To ensure proper and intended use, comply with the specifications in the following
documents:• Angle Encoder Modules brochure1102713-xx• Interfaces of HEIDENHAIN Encoders brochure
1078628-xx