Product Information

ERP 1080 Dplus
High-Accuracy Angle Encoder
without Integral Bearing

07/2024

ERP 1080 Dplus• Very high system accuracy• Resilient angle measurement• Low mass and low mass moment of inertia• Consisting of a scanning ring and a circular scale
K1 
0.08 A

10 151± 0.3

8.5 ± 2

8

 104 H6

 194 ± 0.2

0.05 A

8.5±0.08

 106.5
 121.5
 136 H6

4.5±0.25

0.15 A

8.5

18.8 ± 0.5
15 ± 0.5

100.02 A
0.002

 4.2

Rz 16



0.01

Rz 16

A
M4 (6x)>11.5 11
 0.2 A (6x)
 114

 106.5)
 121.5)

 150

 136)M5 (4x)11 >8
 0.2 A (4x) 194)

4x84.1
 3.7±2Md = 40 Ncm

 136 -0.050-0.075PIN 1

50 ± 0.5
0.05 A

8.5 0.08

 104 -0.025-0.04016 ± 0.5

15 ± 20.05 A
0.015 A

0.02 A0.002

 4.227 =	Screw: ISO 4762 – M4x12 – 8.8
tightening torque: 220 Ncm ±13 Ncm;
material bonding threadlocker required
8 =	Customer's mounted parts
Material:				
Steel
Tensile strength:			
Rm > 600 N/mm2
Yield point:				
Re > 400 N/mm2
Shear strength:			Tau > 390 N/mm2
Elasticity module:			
20 °C: E >200000 N/mm2 ... 215000 N/mm2
Coefficient of thermal expansion: 20 °C: (10<alpha<13) x 10–6 1/K
9 = Mounting surface must be clean and free of grease
10 = Hub shown rotated by 45°
11 = Depth of thread

Product Information for the ERP 1080 Dplus   07/2024+0.2
Rz 161AYX

M4 (6x)>11.5 11
 0.2 A (6x) 106.5)

 114

 121.5)
 194)

Product Information for the ERP 1080 Dplus   07/2024

Y
2:1

15°
+0.5

3

Ⓡ = Reference markK1 = Required mating dimensions
K2 = Required mating dimensions with centering collars
1 = Direction of shaft rotation for ascending position values
2 = Marks for circular scale centering (3 x 120°)
3 = Mark for 0° position
4 = Centering collar for scale hub
5 = Centering collar for scanning unit
6 =	Screw: ISO 4762 – M5x16 – 8.8
tightening torque: 500 Ncm ±30 Ncm;
material bonding threadlocker required15°

0.01A = Bearing of mating shaft

X
2:1Rz 164.5±0.25



M5 (4x)
11 > 8138

15° ± 2°

1033.340 ± 0.5

45°

UNC 4/40

K2 0.2 A (4x)
 150

3

Specifications

Encoder

ERP 1080 Dplus
1)

ERP 1080 Dplus

Interface

4 × » 1 VPP

Measuring standard

OPTODUR circular scale on glass

Reference mark signal

Square-wave pulse

Signal periods*

63 000Cutoff frequency

 500 kHz

System accuracy±0.4”

Four 1.5 m cables with 15-pin D-sub connector (male)

Position error per1)
signal period±0.02”

DC 5 V ±0.5 V

RMS position noise(500 kHz)0.001”

Current consumption

 150 mA (without load)Reference marks

OneVibration
55 Hz to 2000 Hz
Shock: 6 ms

 200 m/s (EN 60068-2-6)

Outside diameter ofscanning ring

194 mmOperating temperature

0 °C to 50 °C

Inside diameter of hub

104 mmStorage temperature–20 °C to 60 °C

Outside diameter ofcircular scale

151 mmMass

 1.1 kg (without cable)
 75 g 22 g/m
 289 gMech. permissible speed

 950 rpm

Elec. permissible speed 475 rpm

Moment of inertia of thescale hub

1.1 · 10

Protection EN 60529

Complete, mounted encoder: IP00–3 dB1)

Electrical connection
1)

With HEIDENHAIN cable:  20 m; during signal adjustment with the PWM 21:  3 m

Cable length1)

Voltage supply1)

1)

Scanning ringConnector
Cable
Scale hub2 200 m/s2 (EN 60068-2-27)

Separate electrical connection for each scanning head–3kgm21)	The position error within one signal period and the accuracy of the graduation together yield the encoder-specific error; for additional
mounting and bearing errors of the measured shaft, see Measuring accuracy in the Modular Angle Encoders with Circular Scalebrochure.

4Product Information for the ERP 1080 Dplus   07/2024

Product Information for the ERP 1080 Dplus   07/2024

5

Electrical connection
Pin layout

Transferable accuracy

In order to achieve accuracies in the high-end range, customers must often perform avery complex and time-consuming calibration of the entire machine. Under the motto“transferable accuracy,” HEIDENHAIN contributes to facilitating the mounting process forthe customer and to transferring the high accuracy of our encoders to the customer’s
application without any losses. For the ERP 1080 Dplus encoders, this is achieved basedon the following features:

Pin layout
15-pin D-sub connector (male)• Sturdy, mechanical interface for mounting on the customer side
• Four scanning heads for position calculation for resilient angle measurement

Electrical connection
The ERP 1080 Dplus angle encoder
provides four separate connections (D-sub,15-pin) with 1 VPP interface. The EIB 74x
signal converters that are available fromHEIDENHAIN can be used to operate theproduct. The product can also be connected
to downstream electronics from third-party
suppliers if they provide four 1 VPP inputs.

Power supplyPosition calculation with an EIB 74x
or downstream electronics fromthird-party suppliers
For the system to be able to reach thespecified accuracy, the positions of all
scanning heads need to be averaged.
Xavg =(X1abs + X2abs + X3abs + X4abs)
4» 1 VPP

Incremental signals

Other signals

4

122

101

93

11

14

7UPSensor
UP

0VSensor
0V

A+

A–

B+

B–

R+

R–

VaVa- Vacant Vacant Vacantcant1) cant1)

Brown/
Green/White/
Green/

GrayPinkRedBlack

Violet Yellow

Brown Green13155/

6/

8/Shield lies on housing; UP = Power supply voltage
Sensor: The sense line is connected in the connector with the corresponding power line.
Vacant wires and pins must not be used.
1)
Required for signal adjustment with the PWM 21

X1abs ... X4abs:	Positions of the scanning
heads
Xavg:		Arithmetic mean value ofinputs X1abs to X4abs

6

Product Information for the ERP 1080 Dplus   07/2024

Product Information for the ERP 1080 Dplus   07/2024

7

Cables

Adapter cables and connecting cables for 1 VPP
PUR 6 x (2 x 0.19 mm2); AP = 2 x 0.19 mm2

PUR 4 x (2 x 0.14 mm2) + (4 x 0.5 mm2); AP = 2 x 0.5 mm2¬ 8 mm¬ 6 mm1)

Adapter cable with 15-pin D-sub connector (female)and 12-pin M23 connector (male)331693-xx

355215-xx

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

335074-xx

355186-xx

Connecting cable with 15-pin D-sub connector (female)and stripped cable end

332433-xx

355209-xx

Connecting cable with 15-pin D-sub connector (female)and 15-pin D-sub connector (female) with pin layout forthe IK 220

335077-xx

349687-xx

Signal cable with stripped cable ends (for 15 pins)

816317-xx

816323-xx

1)

Cable length for ¬ 6 mm: max. 9 m
AP: Cross section of power supply lines

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

1408190 · 00 · B · 02 · 07/2024 · PDF

This Product Information document supersedes all previous editions, which thereby
become invalid. The basis for ordering from HEIDENHAIN is always the ProductInformation 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: Modular Angle Encoders with Circular Scale			
1401414-xx• Brochure: Interfaces of HEIDENHAIN Encoders			
1078628-xx