Product Information

ECI 1119
EQI 1131

Absolute Rotary Encoders
without Integral Bearing
With additional measures:suitable for safety-related
applications with up to SIL 3
For HMC 2 connection
technology

01/2023ECI 1119, EQI 1131
Rotary encoders for absolute position values with safe singleturn information• Robust inductive scanning principle• Mounting-compatible with photoelectric rotary encoders with a 75A stator coupling• 70C mounting flange• Blind hollow shaft (Ø 6 mm) for axial clamping without a positive-locking element (82A)or with a positive-locking element (1KA)• Required mating dimensions with a M3x25 central screw
and cost optimization for the customer side upon request
19.9  Specifications

ECI 1119 singleturn

Functional safetyfor applications with up toAs a single-encoder system for monitoring and closed-loop functions:• SIL 2 as per EN 61508 (further basis for testing: EN 61800-5-2)• Category 3, PL d as per EN ISO 13849-1:2015
With additional measures as per Document 1277016, suitable for safety-related applications withup to SIL 3 or Category 4, PL e
Safe in the singleturn rangePFH1)

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 for 82A shaft: ±0°; for 1KA shaft: ±2°; (fault exclusion for loosening of the shaft
coupling and stator coupling; designed for accelerations at the stator: ≤ 400 m/s2, and the rotor: ≤ 600 m/s2)

Interface

EnDat 3

Ordering designation

E30–R2

Position values per revolution

524 288 (19 bits)

Revolutions–XEL.time HPFout
data rate≤ 11 µs at 12.5 Mbit/s≤ 8.2 µs at 25 Mbit/s

System accuracy±120”

Electrical connection

15-pin PCB connector (with connection for external temperature sensor)3)

Cable length

At 12.5 Mbit/s: ≤ 100 m; at 25 Mbit/s: ≤ 40 m

Supply voltage

DC 4 V to 14 V

Current consumption (typical)

At 12 V: 45 mA (without communication)

At 12 V: 50 mA (without communication)

Power consumption4)(maximum)At 4 V: ≤ 850 mW; at 14 V: ≤ 900 mW

At 4 V: ≤ 950 mW; at 14 V: ≤ 1000 mW

Shaft

Blind hollow shaft for axial clamping ( 6 mm) without positive-locking element (82A)or with positive-locking element (1KA)

Shaft speed 15 000 rpm

Moment of inertia of rotor

0.2 · 10–6 kgm2

Angular acceleration of rotor 1 · 105 rad/s2

 3.2
1512.55  

2  

17 19
3.44  
12  

 
19.9 (19.25)
22.25  

18
16

Required mating dimensions
9
 3.55

9.4
     

 

EQI 1131 multiturn

4096 (12 bits)

 12 000 rpm

Axial motion of measured shaft  ±0.4 mm
    = Bearing of mating shaft
M1 = Measuring point for operating temperature
M2 = Measuring point for vibration
1 = Contact surface of slot
2 = Chamfer at start of thread is mandatory for material bonding anti-rotation lock3 = Shaft surface; ensure full-surface contact!
4 = Slot required only for ECN/EQN and ECI/EQI with WELLA1 = 1KA
5 = ECI/EQI flange surface: ensure full-surface contact!
 
6 = ECN/EQN coupling surface
7 =	Maximum permissible deviation between the shaft surface and coupling surface;compensation of mounting tolerances and thermal expansion,of which ±0.15 mm of dynamic axial motion is permitted (ECN/EQN)
8 =	Mounting dimension: maximum permissible deviation between the shaft surface and flange surface;compensation of mounting tolerances and thermal expansion;
dynamic motion permitted over entire range (ECI/EBI/EQI)
9 = ECI/EBI flange surface; ensure full-surface contact!
10 = Undercut
11 = Possible centering hole
12 = Distance to cover; note the opening for header, header connector, and wires
13 = Screw: ISO 4762 – M3x10 – 8.8 – MKL; tightening torque: 1 Nm ±0.1 Nm
14 = Screw: ISO 4762 – M3x25 – 8.8 – MKL; tightening torque: 1 Nm ±0.1 Nm
15 = Positive-locking element; ensure correct engagement in the slot (e.g., by measuring the device overhang)
16 = Direction of shaft rotation for ascending position values
17 = 15-pin header
18 = Dimension for JH standard cable

2Vibration 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)

22

Operating temperature–40 °C to 110 °C

Trigger threshold for exceeded 125 °C (measuring accuracy of internal temperature sensor: ±1 K)
temperature error message
Relative humidity

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

Protection EN 60529

IP00Mass≈ 0.04 kg

ID number

1259551-01/-516) (shaft: 1KA)
1259551-02/-526) (shaft: 82A)

6)
1259552-01/-51 (shaft: 1KA)
1259552-02/-526) (shaft: 82A))1)

For use at ≤ 2000 m above sea level
Further tolerances may arise in subsequent electronics after position value comparison (contact mfr. of subsequent electronics)
3)
See Temperature measurement in motors in the Encoders for Servo Drives brochure4)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure or at www.heidenhain.de5)
10 Hz to 55 Hz, 4.9 mm constant peak to peak6)
Rotary encoders in a collective package2)

Product Information ECI 1119, EQI 1131  

01/2023

Product Information ECI 1119, EQI 1131  

01/20233

Mounting

The blind hollow shaft of the rotary
encoder is seated onto the measured shaft
and fastened with a central screw. It isparticularly important to ensure that thepositive-locking element of the 1KA rotary
encoder shaft securely engages thecorresponding slot in the measured shaft.
The stator is positioned for mounting via a
centering diameter and fastened with two
mounting screws. Use screws withmaterial bonding anti-rotation lock (seeMounting accessories).

Mounting accessories
Further information:

ScrewsScrews (central screw, mounting screws) are not included in delivery.
They can be ordered separately.

For the customer-side mounting design,
aluminum and steel are permissible
materials for the customer-side shaft andstator.
In addition, comply with the material
specifications and other materialcharacteristics in the Encoders for ServoDrives brochure (ID 208922-xx).

ECN 1119/EQN 1131

Screws1)

Central screwfor shaft fastening

ISO 4762-M3×25-8.8-MKL

ID 202264-86

10 or 100

Fastening screw
for flange

ISO 4762-M3×10-8.8-MKL

ID 202264-87

20 or 2001)

Quantity

With coating for material bonding anti-rotation lock

Please note the information on screws from HEIDENHAIN in the Encoders for Servo Drives brochure, under Screws with material
bonding anti-rotation lock in the chapter General mechanical information.

Mounting aid
To avoid damage to the cable, use themounting aid to connect and disconnect
the cable assembly. Apply pulling force only
to the connector of the cable assembly andnot to the wires.

Integrated temperature evaluation

ID 1075573-01
Mounting aid
For turning the encoder shaft from the rear.
This facilitates finding the positive-locking
connection between the encoder and themeasured shaft.

This rotary encoder features a temperature sensor integrated into the encoder electronics
and an evaluation circuit for an external temperature sensor. In both cases, the respective
digitized temperature value is transmitted purely serially via the EnDat protocol. Please bearin mind that neither the temperature measurement nor the transmission of the temperature
value is safe in terms of functional safety. With regard to the internal temperature sensor(FID 0x21 SENSOR_TEMP_INT), the rotary encoder supports the two-stage cascaded
signaling of a temperature exceedance. It consists of an EnDat warning and an EnDaterror message. In compliance with the EnDat specification, when the temperature reaches
the warning threshold for temperature exceedance of the internal temperature sensor,
an EnDat warning is issued (HPF.STATUS.W "collective warning bit"). In addition, bit 26(W10) "Temperature warning threshold exceeded" is set in the LPF with the FID=ERRMSG.
This warning threshold for the internal temperature sensor is stored in the parameter
SET.tempWarnLevel and can be individually adjusted. A device-specific default value issaved here before shipping. The temperature measured by the internal temperature sensor
is higher by a device-specific and application-specific amount than the temperature atmeasuring point M1, as shown in the dimension drawing.

ID 821017-03EnDat 3 adapter
Adapter for connecting an encoder with
EnDat 3 (E30-R2) to the PWM 21
ID 1317260-01

The encoder features a further, albeit non-adjustable trigger threshold for the EnDat error
message (HPF.STATUS.F "collective error bit"). In addition, bit 8 (A8) "Permissible ambientconditions exceeded" is set in the LPF with the FID=ERRMSG. This trigger threshold mayvary depending on the encoder model and is stated in the specifications. HEIDENHAIN
recommends adjusting the warning threshold based on the application such that thisthreshold is sufficiently below the trigger threshold for the “Temperature exceeded”
EnDat error message. Fulfillment of the encoder's intended use requires adherence to theoperating temperature at measuring point M1.

4

Product Information ECI 1119, EQI 1131  For further mounting information andmounting aids, please refer to the relevant
mounting instructions and the Encoders
for Servo Drives brochure. The mounting
arrangement can be checked with thePWM 21 and ATS software. For selectionof the software, please contact
HEIDENHAIN.
01/2023

Product Information ECI 1119, EQI 1131  

01/20235

Electrical connection

CablesPin layout of ECI, EQI
22ETFE encoder cable inside the motor  1.8 mm 2 x 0.15 mm , without shield and with ETFE wires  2.2 mm 2 x 0.15 mm fora temperature sensor; AP = 0.15 mm28-pin M12 SpeedTEC
angle flange socket

15-pin PCB connector
DC15-pin PCB connector (female) and unassembled cable end,
with two twisted ETFE single wires (communication) andtwo ETFE single wires (length: 0.10 m) with heat shrink
tubing (temperature sensor)

1302347-xx

15-pin PCB connector (female) and8-pin M12 SpeedTEC angle flange socket (male),with two twisted ETFE single wires (communication) andtwo ETFE single wires (length: 0.10 m) with heat shrink
tubing and a 2-pin connector (male)for a temperature sensor

1279930-xx

8B

324152211

Encoder
Power supply / Serial data transfer

Other signals

8AB/

/

15

9105

62––2

1

P_SD+

P_SD–1)

T+2)

T–2)

VioletYellowBrown

Green1)

PUR adapter cable  9.3 mm with external shield;
4 x 0.5 mm2 (power wires)2 x 0.34 mm2 (brake wires, shielded)
2 × 0.14 mm2 (communication wires, shielded); AP = 0.14 mm2
8-pin M12 SpeedTEC straight connector (female),3-pin header connector (power),
4-pin header (brake wires), and15-pin D-sub connector (male) (communication)A

1279881-xx

MotorBrake
8The connecting element must be suitable for the maximum clock frequency used.
Note for safety-related applications:• Conformity with the EMC Directive must be ensured in the complete system!

1)
2)

SpeedTEC is a registered trademark of TE Connectivity Industrial GmbH.

PowerCD12

3

4Brake +Brake –UVWPEPower supply and data: P_SD+ includes UP; P_SD– includes 0 V	Connections for external temperature sensor; evaluation optimized for a KTY 84-130, PT 1000, and other sensors;(see Temperature measurement in motors in the Encoders for Servo Drives brochure)

Cable shield connected to housing; UP = Power supply voltage
Vacant pins or wires must not be used!
Note on safety-related applications: only completely assembled HEIDENHAIN cables are qualified for this.
Do not modify cables or exchange their connectors without first consulting with HEIDENHAIN Traunreut!
SpeedTEC is a registered trademark of TE Connectivity Industrial GmbH.

6Product Information ECI 1119, EQI 1131  

01/2023

Product Information ECI 1119, EQI 1131  

01/20237

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

1305740 · 01 · C · 02 · 01/2023 · 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 made.
Further information:
To ensure proper use, comply with the requirements described in the following
documents:• Brochure: Encoders for Servo Drives
208922-xx• Brochure: Cables and Connectors
1206103-xx• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Product Information doc.: HMC 21305512-xx• Technical Information doc.: EnDat 3
1305415-xx• Mounting Instructions: ECI 1119, EQI 1131
1306491-xx• EnDat 3 Application Conditions for Functional Safety
3000003-xx• Supplementary Application Conditions for EnDat 3for Step Monitoring (SIL 3, PL e)
1277016-xx