Product Information

ERO 2000 Series
Angle Encoders
Without Integral Bearing

01/2022

ERO 2000 series• High resolution and accuracy• Low mass and low mass moment of inertia• Consisting of an AK scanning head and TKN circular scale• TKN segment versions with position detection via homing track

Graduation carrier ¬ 18.6 mm (segment version: 18.6 mm x 9 mm)
AK ERO 20x0

TKN ERO 2000
2:1

TKN ERO 2002
2:1

3h6
 18.6

2.6

Incremental tracks: 230.750.01

12.7

Graduation carrier  30 mm

30.750.01

9.7

2.7

6.8

Incremental tracks: 13h6



X

0.003

(12.7)

 5.2) 30

18.6.7



 3.7



X
8:1
 13.2)

 5 H6



4217.




 1.5H7



A-A

0.35

2:1

3x M2
 0.1



20

 

1.3±0.2

6.8

2x M2
 0.1

0.005 A

B

X(0.5)(10.15)

ISO 4762 - M2 - 8.8

B C LEB D LE

2.6

0.05 / 12.7
0.1 / 26

26

A

12.7

3.35 ±0.2

ISO 4762 - M2 - 8.8
ISO 7092 - 2

20.8

Required mating dimensions

0.1 BA



21.14



X

5:1



 5.2 3H7(or 3.1±0.05)

D 13.218.54





6.4

2.6



2:1



0.02 B
0.01 B

B



22.5°

22.5°

120°
14.4

6.4

9C

14.4

26

179




5(0.55)0.1 / 26 A

HOMING
HIGH levelA

LOW level

A7°5°


18.54

ISO 4762 - M3 - 8.8
ISO 7092 - 3



2:1

A = Bearing = Reference mark
1 = Positive direction of rotation
2 = Centering collar
3 = Marks for circular scale centering (3x120°)
4 = Fine adjustment of the scanning head for obtaining optimal incremental signals
5 = Alternative cable outlet and connector are available
6 = Optical center point
7 = For centering of circular scale with two scanning heads

28.8

B = Bearing of mating shaft
h = Signal edge of the homing track
R = Position of the reference mark
1 = Direction of shaft rotation for ascending position values
2 = Fine adjustment of the scanning head for optimal incremental signals
3 = Cylindrical pin for positioning and Moiré adjustment (must be removed after positioning)
4 = Dimension for alignment of the circular scale via the centering pin of the graduated disk
5 = Dimension for mounting the graduated disk via optical alignment;
do not use the outer glass edge of the graduated disk
6 = Optional: mounting with two scanning heads

LE = Line element (ISO 1101: 2008)

226.1

5.9

93.3°

Product Information ERO 2000    01/2022

Product Information ERO 2000    01/2022

343

Specifications

1)
TKN ERO 2002 (segment)

Scanning head

AK ERO 2080

Circular scale

TKN ERO 2000 (full circle)

Interface» 1 VPP

Measuring standard

SUPRADUR graduation on glass

Reference mark signal

Square-wave pulse

Measuring range

360°

Cutoff frequency –3 dB1)

 1 MHz

Signal periods

4096

2500

2500 over 360°

Electrical connection*

15-pin D-sub connector (male) with 0.5 m/1 m/1.5 m/3 m cable12-pin SHR-12V-S connector (female) with 0.5 m/1 m/1.5 m/3 m cable
Cable outlet on the left or right and straight or angled

Accuracy of graduation

±8”

±10“

–Position error per3)
signal period

±0.3”

±0.5”

±0.5”

Position noise RMS (1 MHz)

0.03”

0.04”

0.04”

Reference marks

One

Inside diameter of hub

5 mm––Dimensions ofgraduation carrier 30 mm

 18.6 mm18.6 mm x 9 mm

Centering pin–3 mm

3 mm

Mech. permissible shaft speed 14 000 rpm

 24 000 rpm

Moment of inertia

4.1 · 10

Protection EN 60529

Complete, mounted encoder: IP00

Mass

 5.2 gCable lengthWith HEIDENHAIN cable:  20 m; during signal adjustment with the PWM 21:  3 m

Supply voltage

DC 5 V ±0.5 V

Current consumption

 150 mA (without load)

Vibration 55 Hz to 2000 Hz
Shock 6 ms

 500 m/s2 (EN 60068-2-6)
 1000 m/s2 (EN 60068-2-27)

Operating temperature–10 °C to 70 °C

ProtectionIP50

Mass

Scanning headConnectorCable 5 g (without cable)
 75 g 22 g/m* Please select when ordering1)
Maximum frequency during referencing: 500 kHz2)

45°

One–7kgm2

2.2 · 10–8 kgm2

 0.56 g–One on every side

1.1 · 10–8 kgm2

 0.36 g1)	Along with their incremental graduation, the TKN ERO 2002 segment versions feature a homing track for position detection (see h inmating dimensions). The signal for position detection from the scanning head is transmitted in the TTL level via a separate line and istherefore directly available. The incremental signals correspond to the VPP interface.
2)
When centered with two scanning heads3)	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 Optical Scanningbrochure.

4

Product Information ERO 2000    01/2022

Product Information ERO 2000    01/2022

5Cable outlets

Electrical connection

Pin layout

Cable outlet on the right

15-pin D-sub connector (male)

12-pin SHR-12V-S connector (female)

1 2 3 4 5 6 7 8 9 10 11 12Power supply
Cable outlet on the left

» 1 VPP
Cable outlet on the rightat angle of 0°

Incremental signals

Other signals

41221019311147138615

1–2–3465879121011UP

SensorUP0VSensor
0V

A+

A–B+B–R+R–

VacantH/

VacantBrown/
Green/White/
Green/

Brown

GreenGray

PinkRedBlack

Violet1)

1)

Green/ Yellow/ Yellow
Black Black

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

Cable outlet on the left
at angle of 0°

Cable bend radius RConnectors
D-sub» 1 VPP

SHR-12V-S» 1 VPP

Cable clip
(screw: M3x6)

6

Product Information ERO 2000    01/2022

Product Information ERO 2000    01/2022

7

Adapter cables and connecting cables
PUR 6 x (2 x 0.19 mm2); AP = 2 x 0.19 mm2
PUR 4 x (2 x 0.16 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) and12-pin M23 connector (male)331693-xx2)

355215-xx2)

Adapter cable with 15-pin D-sub connector (female) and15-pin D-sub connector (male)

354379-xx3)

355397-xx3)

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

354411-xx3)

355398-xx3)

Connecting cable with 15-pin D-sub connector (female)and 15-pin D-sub connector (female) with pin layout for theIK 220

335077-xx2)

349687-xx2)Signal cable with stripped cable ends (15-polig)4)

816317-xx

816323-xx

1)

Cable length for ¬ 6 mm: max. 9 m
Without homing3)
With homing4)
Cable design: 4 x (2 x 0.14 mm2) + (4 x 0.5 mm2)
AP: Cross section of supply lines2)

Accessory

Adapter connector from SHR-12-V-S to D-sub for signal comparison with PWM 21          
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1105744 · 05 · B · 02 · 01/2022 · PDF

ID 1234385-01

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: Modular Angle Encoders with Optical Scanning
1222041-xx• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Brochure: Cables and Connectors
1206103-xx