Product Information

ECI 1319 S
EQI 1331 S
Absolute Rotary Encoders
without Integral Bearing
DRIVE-CLiQ (firmware 15)
0YA (44A/44C) flange

02/2023ECI 1319 S, EQI 1331 S
Rotary encoders for absolute position values with safe singleturn information• Robust inductive scanning principle• Mounting-compatible with photoelectric rotary encoders with a 07B stator coupling• 0YA mounting flange• Blind hollow shaft for axial clamping  12.7 mm (44C) or  12 mm (44A)• Cost-optimized mating dimensions upon request

74

Required mating dimensionsD90°...120°

90°...120°

Specifications

ECI 1319 S singleturn

EQI 1331 S multiturn

Functional safety
for applications with up toAs a single-encoder system for monitoring functions and control-loop functions:• SIL 2, as per EN 61508 (further basis for testing: IEC 61800-5-3)• Category 3, PL d, in accordance with EN ISO 13849-1:2015
Safe in the singleturn rangePFH1)

SIL 2: ≤ 27 · 10–9 (probability of dangerous failure per hour)

Safe position2)

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

Interface

DRIVE-CLiQ

Ordering designation

DQ01

Position values per revolution

524 288 (19 bits)

Firmware01.32.27.15

Siemens software3)

SINAMICS, SIMOTION:  4.6 HF3SINUMERIK with safety:  4.7 SP1 HF1; SINUMERIK without safety:  4.5 SP2 HF4Revolutions–TIME_MAX_ACTVAL4)≤ 12 µs

System accuracy±65”

Electrical connection

Encoder PCB connector: 16-pin; with connection for temperature sensor5)

Cable length 40 m (see description in the Interfaces of HEIDENHAIN Encoders brochure)Supply voltage

DC 24 V (10 V to 28.8 V; up to DC 36.0 V possible without impairing the functional safety)

Power consumption6)(maximum)At 10 V: ≤ 1100 mW
At 28.8 V: ≤ 1250 mW

At 10 V: ≤ 1200 mW
At 28.8 V: ≤ 1350 mW

Current consumption (typical)

At 24 V: 40 mA (without load)

At 24 V: 45 mA (without load)

Shaft

Blind hollow shaft for axial clamping ¬ 12.7 mm (44C) or ¬ 12 mm (44A)

Spindle speed≤ 15 000 rpm≤ 12 000 rpm

Moment of inertia of rotor

2.45 · 10–6 kgm2

2.6 · 10–6 kgm2

Angular acceleration of rotor≤ 1 · 105 rad/s24096 (12 bits)

Axial motion of measured shaft ≤ ±0.5 mm
 = Bearing of mating shaft
M1 = Measuring point for operating temperature
M2 = Measuring point for vibration (see D741714)
1 = 12-pin + 4-pin header
2 = Screw plug: widths A/F 3 and 4; tightening torque: 5 Nm +0.5 Nm
3 = Screw: DIN 6912 – M5x30 – 08.8 – MKL, width A/F 4; tightening torque: 5 Nm +0.5 Nm
4 = Screw: ISO 4762 – M4x10 – 8.8 – MKL; width A/F 3; tightening torque: 2 Nm ±0.1 Nm
5 = Functional diameter of taper for ECN/EQN 13xx
6 = Chamfer at start of thread is mandatory for material bonding anti-rotation lock
7 = Flange surface ExI/resolver; ensure full-surface contact!
8 = Shaft surface; ensure full-surface contact!
9 =	Mounting clearance between shaft surface and flange surface;compensation of mounting tolerances and thermal expansion;
ECI/EQI: dynamic motion permitted over entire range;
ECN/EQN: no dynamic motion permitted
10 = M10 back-off thread
11 = Direction of shaft rotation for ascending position values

21)For use at ≤ 1000 m above sea level (≤ 6000 m above seal level upon request)	Further tolerances may arise in the downstream electronics after position value comparison (contact the manufacturer)3)	Information from Siemens as per the document “Certified encoders with DRIVE-CLiQ Dependencies on SIMOTION / SINUMERIK andSINAMICS Hardware and Software versions” (version: 04/2019)4)	The calculation time TIME_MAX_ACTVAL specifies the time after which a data transfer from the encoder to the control can start within
the current-regulator clock time5)
See Temperature measurement in motors in the Encoders for Servo Drives brochure6)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure or at www.heidenhain.com
2)

8

Product Information ECI 1319 S, EQI 1331 S   02/2023

DRIVE-CLiQ is a registered trademark of Siemens AG

Product Information ECI 1319 S, EQI 1331 S   02/2023

3MountingSpecifications

ECI 1319 S singleturn

Vibration 55 Hz to 2000 Hz7)
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 100 °C

Trigger thresholdof error message for excessivetemperature

120 °C (measuring accuracy of the internal temperature sensor: ±1 K)

Relative humidity

 93% (40 °C/21 d as per EN 60068-2-78), condensation excluded

Protection rating EN 60529

IP20 (read about insulation under General electrical information in the Encoders for Servo Drivesbrochure)

Mass≈ 0.13 kg

ID number*

ID 1222049-01 (shaft 44C)
ID 1222049-02 (shaft 44A)2

EQI 1331 S multiturn2

The blind hollow shaft of the rotary encoder is pressed onto the measured shaft andfastened with a central screw. Mounting on the stator side is performed via a centering
diameter with three mounting screws. Use screws with material bonding anti-rotation
lock (see Mounting accessories).

The following conditions must be complied with for the customer-side mounting design:

Material

Mating stator

Mating shaft

Aluminum

Steel

Further information:
ID 1222051-01 (shaft 44C)
ID 1222051-02 (shaft 44A)
ID 1222051-51 (shaft 44C)8)

Also pay attention to the other material
properties in the Encoders for Servo
Drives brochure (ID 208922-xx).

* Please select when ordering; 44A shaft upon request7)
10 Hz to 55 Hz, 4.9 mm constant peak to peak8)
In collective package

Mounting accessories
ScrewsScrews (central screw, mounting screws) are not included in delivery and can be orderedseparately.
1)

ECI 1319 S
EQI 1331 S

ScrewsCentral screwfor shaft fastening

ISO 6912-M5×30-08.8-MKL

ID 202264-76

Mounting screw
for flange

ISO 4762-M4×10-8.8-MKL

ID 202264-85 30 or 300

1)

Lot size
10 or 100With coating for material bonding anti-rotation lock

Please note the information on screws from HEIDENHAIN in the Encoders for Servo
Drives brochure, under the heading Screws with material bonding anti-rotation lock in thechapter 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 further mounting information and mounting aids, please refer to the relevant
mounting instructions and the Encoders for Servo Drives brochure. The mounting
quality can be checked with the PWM 21 and the ATS software.

4Product Information ECI 1319 S, EQI 1331 S   02/2023

Product Information ECI 1319 S, EQI 1331 S   02/2023

5

Integrated temperature evaluation

Electrical connection

This rotary encoder features an internal temperature sensor
integrated into the encoder electronics, as well as an evaluation
circuit for an external temperature sensor. The digitized temperature
value of the external temperature sensor can be transferred purely
serially over the DRIVE-CLiQ interface. Please bear in mind thatneither the temperature measurement nor the transmission of thetemperature value is safe in terms of functional safety.

Cables

The temperature measured by the internal temperature sensor ishigher by a device-specific and application-specific amount than
the temperature at measuring point M1 in accordance with thedimension drawing. Upon reaching a trigger threshold for theinternal temperature, the rotary encoder outputs an “Alarm 135”
error message. This threshold may vary depending on the encoder
model and is stated in the specifications. During operation, it isrecommended that the temperature be kept adequately below thisthreshold.
Compliance with the operating temperature at measuring point M1
is required for adherence to the encoder’s proper and intended use.

Temperature measurement in motors
To protect a motor from overloading, the motor manufacturer
usually installs a temperature sensor in close proximity to themotor winding.
For this purpose, a PT 1000 or, for example, a KTY 84‑130
semiconductor sensor is to be used. For a PT1000, the following
values apply with regard to the accuracy of the evaluation circuit:±6 K at –40 °C to 80 °C±4 K at 80.1 °C to 160 °C±6 K at 160.1 °C to 200 °C
For a KTY 84-130 semiconductor sensor, the following values apply
with regard to the accuracy of the evaluation circuit:±6 K at –40 °C to 80 °C±2 K at 80.1 °C to 160 °C±6 K at 160.1 °C to 200 °C
The temperature values are transmitted via the DRIVE‑CLiQ
protocol.
The temperature sensor used is adjustable via Parameter 601 in
the configuration software (e.g., Starter software) of the drive.

EPG encoder cable inside the motor  3.7 mm; 2 × (2 × 0.06 mm2) + 4 × 0.06 mm2; AP = 0.06 mm2
with shield crimping  6.1 mm and wires for temperature sensor1) TPE 2 × 0.16 mm216-pin PCB connector and 9-pin M23 SpeedTEC
angle flange socket (male) with wires fortemperature sensor1)

ID 1120945-xx

Electromagnetic compatibility must be ensured in the complete system.

PUR adapter cable  6.8 mm; 2 × (2 × 0.17 mm2) + 2 × 0.24 mm2; AP = 0.24 mm2
9-pin M23 SpeedTEC* connector (female) and8+2-pin RJ45 connector (IP20)

ID 1121546-xx

9-pin M23 SpeedTEC connector (female) and8-pin M12 coupling (male)

ID 1121536-xx

AP: Cross section of power supply lines* SpeedTEC is a registered trademark of TE Connectivity Industrial GmbHPin layout
9-pin M23 right-angle socket

16-pin PCB connector

16Power supply1)

Serial data transmission

Other signals

M23845612//16

3a4b6b1a2b5a8a8bUP0V

RXP

RXN

TXP

TXN

T+2)

T–2)

WhiteWhite/GreenGrayPink

VioletYellowBrownGreen1)

Only for adapter cables inside the motor housing	Connections for external temperature sensor; regarding evaluation, refer to Temperature measurement in motors in the Encoders forServo Drives brochure2)

Cable shield connected to housing; UP = Power supply voltage
Vacant pins or wires must not be used!
Note for safety-related applications: Only completely assembled HEIDENHAIN cables are qualified.
Do not modify cables or exchange their connectors without first consulting with HEIDENHAIN Traunreut.

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

6Product Information ECI 1319 S, EQI 1331 S   02/2023

1247200 · 03 · B · 02 · 02/2023 · 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 placed.
More information:
Comply with the requirements described in the following documents to ensure correctand intended operation:• Operating Instructions
1386379• Brochure: Interfaces of HEIDENHAIN Encoders
1078628-xx• Brochure: Cables and Connectors
1206103-xx• Technical Information document: Safety-Related Position Measuring Systems596632