Product Information

ECI 1119
EQI 1131
Absolute Rotary Encoders
Without Integral Bearing
EnDat2202/2022

ECI 1119, EQI 1131
Rotary encoders for absolute position values• Robust inductive scanning principle• 70G flange for press-fitting with a tolerance sleeve• 82A blind hollow shaft ( 6 mm) for axial clamping
without a positive-locking element• Required mating dimensions with M3×25 central screw
M1

21.9 +0.8
022.25 ± 0.6

12(19.25)


12.25 ± 0.3( 36.51)

6



3.44 ± 0.2

 0 ± 0.414

 0.02 A 6g7 AZ  40 0 ± 0.4
15 12.8 ± 0.03

 37.05 +0.1
0+0,3

Z
5:1



16  0.7

2.3 ± 0.1
 0.01 A-0.4

90°  0.06 A



60°

Y

16

  14

 0.05 A  4.5 ± 0.1

 1114M3

 22.85

 37.8 ± 0.02



21.9 ± 0.5

 3.2 ± 0.1

12 ± 0.817

  9.3

13



M2(4)

  7.511 13

1.6 ± 0.1 10
 = Bearing of mating shaft
 = Required mating dimensions
M1 = Measuring point for operating temperature
YM2 = Measuring point for vibration
5:1
1 = Direction of shaft rotation for ascending position values
2 = Shaft surface; ensure full-surface contact!
3 = Flange surface; ensure full-surface contact!
20° +1°0
4 = Centering diameter
5 =	Mounting clearance:
Maximum permissible deviation between shaft surface and flange surface;compensation of mounting tolerances and thermal expansion;
dynamic motion permitted over entire range.
6 = Chamfer at start of thread is mandatory for material bonding anti-rotation lock
7 =	Screw: DIN EN ISO 4762 – M3x25 – 8.8 with material bonding anti-rotation lock: ID 202264-86;
tightening torque: 1.0 Nm ±0.1 Nm
8 = Attention! Not a clamping surface
9 =	Flange fastening with tolerance sleeve (for press-fitting parameters, see the mounting instructions)
10 = Possible centering hole
11 = 15-pin PCB connector
12 = Dimension for JH standard cable
13 = Ensure space for cable
14 = Distance to cover; note the opening for PCB connector, header connector, and wires
15 = Min. wall thickness: 1.09 mm; no interruption permitted!
16 = Undercut
17 = Surface for application of force for press-fitting the encoder (ensure full-surface contact)2 6.2220°

Workpiece edges
as per ISO 13715

Product Information ECI 1119, EQI 1131   02/2022

Specifications

ECI 1119 singleturn

EQI 1131 multiturn

Interface

EnDat 2.2

Ordering designation

EnDat22

Position values per revolution

524 288 (19 bits)

Revolutions–Calculation time tcal /Clock frequency≤ 5 μs / ≤ 16 MHz

Analog delay time tAD (typical)

13.9 µs

System accuracy±120"

Electrical connection

15-pin PCB connector (with connection for external temperature sensor )Cable length≤ 100 m (see the EnDat description in the Interfaces of HEIDENHAIN Encoders brochure)Supply voltage

DC 3.6 V to 14 VPower consumption3) (maximum)

At 3.6 V: ≤ 650 mW; at 14 V: ≤ 700 mW

At 3.6 V: ≤ 750 mW; at 14 V: ≤ 850 mW

Current consumption (typical)

At 5 V: 95 mA (without load)

At 5 V: 115 mA (without load)

Shaft

82A blind hollow shaft ( 6 mm) for axial clamping, without positive-locking element

Speed≤ 15 000 rpm

Moment of inertia of rotor

0.2 · 10–6 kgm2

Angular acceleration of rotor≤ 1 · 105 rad/s2

Axial motion of measured shaft≤ ±0.4 mm

Mounting clearance

2 mm (nominal value for checking the mounting quality in the ATS software, under "Mounting")

Vibration 55 Hz to 2000 Hz4)
Shock 6 ms

Stator: ≤ 400 m/s ; rotor: ≤ 600 m/s (EN 60068-2-6)≤ 2000 m/s2 (EN 60068-2-27)

Operating temperature–40 °C to 110 °C

Trigger threshold for error
message due to temperature
exceedance

125 °C (measuring accuracy of internal temperature sensor: ±1 K)

Relative humidity≤ 93% (40 °C/21 d as per EN 60068-2-78), without condensation

Protection rating EN 60529

IP00 (see Electrical safety under General electrical information in the Interfaces ofHEIDENHAIN Encoders brochure)Mass 0.04 kg

ID number

82A shaft: ID 1164812-03/-534096 (12 bits)2)≤ 12 000 rpm

221)

82A shaft: ID 1164813-03/-531)

1)
Rotary encoders in collective package
2)
See Temperature measurement in motors in the Encoders for Servo Drives brochure3)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure4)

At 10 Hz to 55 Hz, constant over 6.5 mm peak to peak (stator), 10 mm peak to peak (rotor)

Product Information ECI 1119, EQI 1131   02/2022

3

MountingAfter inserting the tolerance sleeve (see Mounting accessories) in the customer's machine,the encoder flange is press-fit until it comes to a stop in the axial direction. Then the blindhollow shaft of the rotary encoder is fastened to the customer-side motor shaft with acentral screw (see the mounting instructions).

Further information:
For the customer-side mounting design,
aluminum and steel are permissible
materials for the customer-side shaft andstator.

Mounting accessories
Fastening elements
The central screw and the tolerance sleeve are not included in delivery and can be orderedseparately.
ECI 1119
EQI 1131

Fastening elements

Central screw1)
for shaft fastening

ISO 4762-M3×25-8.8-MKL

ID 202264-86

Tolerance sleeve forclamping the flange

D 37.8 mm x L 15 mm

ID 1264352-10 10 or 100
ID 1264352-111)

In addition, comply with the material
specifications and other material
characteristics in the Encoders for Servo
Drives brochure (ID 208922-xx).

Quantity
10 or 100

With coating for material bonding anti-rotation lock

Please note the information on screws from HEIDENHAIN in the Encoders for ServoDrives brochure, under the heading Rotary encoders with functional safety in the chapter
General mechanical information.
Mounting aid
To avoid damage to the cable, use the mounting aid to connect and disconnect the cable
assembly. The pulling force must be applied solely to the connector and not to the wires.
ID 1075573-01

For more mounting information and mounting aids, see the Mounting Instructions
and the Encoders for Servo Drives brochure. The installation can be inspected withthe PWM 21 and the ATS software (see Document 1082415).

4

Product Information ECI 1119, EQI 1131   02/2022

Product Information ECI 1119, EQI 1131   02/2022

5Electrical connection
Pin assignment

Pin layout
8-pin M12 flange socket15-pin
PCB connector

15M12Encoder
Power supplyM12151)
2)

Other signals1)

Serial data transmission

82

51

3476/

/

131114

127891056UPSensor UP0VSensor 0 V

DATA

DATA

CLOCK

CLOCKT+2)

T–2)

Brown/
GreenBlueWhite/GreenWhite

Gray

Pink

VioletYellowBrown

Green

Only with output cables inside the motor housing
Connections for external temperature sensor; evaluation optimized for KTY 84-130 (see Temperature measurement in motors in theEncoders for Servo Drives brochure)

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

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1367878 · 00 · B · 02 · 02/2022 · 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.
More information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Brochure: Encoders for Servo Drives
208922-xx• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Brochure: Cables and Connectors
1206103-xx• Operating Instruction: ECI 1119, EQI 1131
1368055-xx• Mounting Instructions: ECI 1119, EQI 1131
1368063-xx