Product Information

ECI 1119
EQI 1131
Absolute Rotary Encoders
Without Integral Bearing
EnDat22
With additional measures:suitable for safety-related
applications with up to SIL 311/2021

ECI 1119, EQI 1131
Rotary encoders for absolute position values with safe singleturn information• 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

22.25 ± 0.6

6( 36.51)


3.44 ± 0.282A shaft: ID 1164811-05/-551)

Functional safety
for applications with up toAs a single-encoder system for monitoring functions and closed-loop functions• SIL 2 as per EN 61508 (further basis for testing: IEC 61800-5-3)• Category 3, PL d as per EN ISO 13849-1:2015

PFH6)

SIL 2: ≤ 15 · 10–9 (probability of dangerous failure per hour); SIL 3: ≤ 2 · 10–9

Safe position2)

Encoder: ±0.88° (safety-related measuring step: SM = 0.35°)
Mechanical coupling of 82A shaft: ± 0° (fault exclusion for the loosening of the shaft coupling andstator coupling; designed for accelerations at the stator of ≤ 400 m/s2; at the rotor: ≤ 600 m/s2)

Interface

EnDat 2.2

Ordering designation

EnDat22

Position values per revolution

524 288 (19 bits)

Revolutions–

21.9 ± 0.5

 0.02 A

15 12.8 ± 0.03

 0.01 A-0.4

90°  0.06 A



60°

Y16

  14

 0 ± 0.4

16  0.7

2.3 ± 0.1

  9.3

ZZ5:1

  7.5

 6g7 A

 37.05 +0.1
0+0,3

 4.5 ± 0.1

 0.05 A M3

 1114

 37.8 ± 0.02

 22.85

1.6 ± 0.1 10
 = Bearing of mating shaft
 = Required mating dimensions
M1 = Measuring point for operating temperatureY
M2 = 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°04 = Centering diameter
5 =	Mounting clearance:
Maximum permissible deviation between shaft and flange surfaces;
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 = Warning! Surface not for clamping
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) 6.24096 (12 bits)

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

 0 ± 0.4

14

 3.2 ± 0.1

12 ± 0.8

282A shaft: ID 1164809-05/-551)

M2(4)12.25 ± 0.3

13  40

Valid for(19.25)

17EQI 1131 – multiturn

M112

ECI 1119 singleturn

With additional measures as per document 1000344 for safety-related applications with up to SIL 3or category 4, PL e
Safe in the singleturn range

21.9 +0.8011 13Specifications

220°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 V

Power consumption4) (max.)

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 Hz5)
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 °C3)

≤ 12 000 rpm

22Trigger threshold for error message 125 °C (measuring accuracy of internal temperature sensor: ±1 K)
due to temperature exceedance

Workpiece edges
as per ISO 13715 -0.3

Product Information ECI 1119, EQI 1131   11/2021

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 of HEIDENHAINEncoders brochure)Mass 0.04 kg1)
Rotary encoders in collective package2)	Further tolerances may arise in the downstream device after position
value comparison (contact mfr. of the downstream device)3)	See Temperature measurement in motors in the Encoders forServo Drives brochure
Product Information ECI 1119, EQI 1131   11/20214)	See General electrical information in the Interfaces ofHEIDENHAIN Encoders brochure5)	At 10 Hz to 55 Hz, constant over 6.5 mm peak to peak (stator),
10 mm peak to peak (rotor)6)	For use at ≤ 2000 m above sea level (≤ 6000 m above sea levelupon request)3

Mounting

Mounting accessories

After inserting the tolerance sleeve (see Mounting accessories) in the customer'smachine, the encoder flange is press-fit until it comes to a stop in axial direction.
Then the blind hollow shaft of the rotary encoder is fastened to the customer'sdrive shaft with a central screw (see the mounting instructions).

Fastening elements
The central screw and the tolerance sleeve are not included in delivery and can be orderedseparately.

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

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 forServo 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 forServo Drives 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 thecable 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 with
the PWM 21 and the ATS software (see document 1082415).

4

Product Information ECI 1119, EQI 1131   11/2021Product Information ECI 1119, EQI 1131   11/2021

5Electrical connection
Pin assignment

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

15M12EncoderPower supplyM12151)
2)

Other signals1)

Serial data transmission

8251

34

76/

/

131114

127891056UP

Sensor UP0V

Sensor 0 V

DATADATA

CLOCK

CLOCKT+2)

T–2)

Brown/
GreenBlueWhite/GreenWhite

GrayPink

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).

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

1359122 · 00 · B · 02 · 11/2021 · 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:
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 instructions: ECI 1119, EQI 1131 Functional Safety
1363898-xx• Mounting Instructions: ECI 1119, EQI 1131
1359816-xx• Technical Information document: Safety-Related Position Measuring Systems596632• For implementation in a safe control or inverter: Specification:
533095and Supplementary Measures Catalog (SIL 3, PL e):
1000344