Product Information

ECI 1319
EQI 1331
EBI 1335
Absolute Rotary Encoders
without Integral Bearing
Suited for safety-related
applications up to SIL 3
when coupled withadditional measures

09/2018

ECI 1319, EQI 1331, EBI 1335
Rotary encoders for absolute position values with safe singleturn information• Rugged inductive scanning principle• Mounting-compatible to photoelectric rotary encoders with 07B stator coupling• 0YA mounting flange• Blind hollow shaft for axial clamping Ø 12.7 mm (44C) or Ø 12 mm (44A)• Cost-optimized mating dimensions upon request

Required mating dimensions

90°...120°

90°...120°

 = Bearing of mating shaft
M1 = Measuring point for operating temperature
M2 = Measuring point for vibration, see D 741714
1 = PCB connector, 16-pin
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 is obligatory at start of thread for materially bonding anti-rotation lock
7 = Flange surface ExI/resolver; ensure full-surface contact!
8 = Shaft surface; ensure full-surface contact!
9 =	Maximum permissible deviation between shaft and flange surfaces.
Compensation of mounting tolerances and thermal expansion.
ECI/EQI/EBI: 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

28

Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

Specifications

ECI 1319 – Singleturn

EQI 1331 – MultiturnEBI 1335 – MultiturnID number

810661-02 (shaft 44C)
810661-03 (shaft 44A)
810661-06 (shaft 44C)1)

810662-01 (shaft 44A)
810662-03 (shaft 44C)
810662-06 (shaft 44C)1)

1230275-01 (shaft 44C)
1230275-02 (shaft 44A)

Functional safety
for applications up toAs 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 1000344 for safety-related applications
up to SIL 3 or category 4,PL e
Safe in the singleturn range

PFH

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: 0° (fault exclusion for loosening of shaft and stator coupling, designed foraccelerations of ≤ 400 m/s2 on the stator and ≤ 600 m/s2 on the rotor)

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

System accuracy±65”

Electrical connection

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

Cable length 100 m (see EnDat description in the brochure titled Interfaces of HEIDENHAIN Encoders)

Supply voltage

DC 3.6 V to 14 V

Power consumption3)(maximum)At 3.6 V: ≤ 650 mW
At 14 V: ≤ 700 mW

At 3.6 V: ≤ 750 mW
At 14 V: ≤ 850 mW

At 3.6 V: ≤ 650 mW
At 14 V: ≤ 700 mW

Current consumption (typical)At 5 V: 95 mA (without load)

At 5 V: 115 mA (without load)

Normal operation at 5 V:
95 mA (without load)
Buffer mode:
160 µA (rotating shaft)4
16 μA (at standstill)4096 (12 bits)

65563 (16 bits)

Rotary encoder UP: DC 3.6 V to14 V
Backup battery UBat: DC 3.6 V
to 5.25 V1)

In collective package	Further tolerances may occur in subsequent electronics after position value comparison (contact manufacturerof subsequent electronics)
3)
See General electrical information in the Interfaces of HEIDENHAIN Encoders brochure or at www.heidenhain.de4)
At T = 25 °C; UBat = 3.6 V2)

Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

3Specifications

ECI 1319 – Singleturn

EQI 1331 – MultiturnEBI 1335 – MultiturnShaft*

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

Shaft speed 15 000 rpm

 12 000 rpm

Moment of inertia of rotor

2.45 · 10–6 kgm2

F2.6 · 10–6 kgm2

Angular acceleration of rotor 1 · 105 rad/s2

Axial motion of measured
shaft

 ±0.5 mm

Vibration 55 Hz to 2000 Hz1)
Shock 6 ms22Stator: ≤ 400 m/s ; rotor: ≤ 600 m/s (EN 60068-2-6)≤ 2000 m/s2 (EN 60068-2-27)

Operating temperature–40 °C to 115 °CTrigger thresholdof error message forexcessive temperature

130 °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 EN 60529

IP20Mass≈ 0.13 kg

2.45 · 10–6 kgm2

* Please select when ordering
1)
10 Hz to 55 Hz constant over distance 4.9 mm peak to peak

4Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

Mounting

The blind hollow shaft of the rotary encoder is slid onto the measured shaft and fastened with a central screw. The stator is mounted by a centering diameter with threemounting screws. In each case, use screws with materially bonding anti-rotation lock(see Mounting accessories).
The following material properties and conditions must be complied with whencustomers plan and execute installation.
Mating stator

Mating shaft

Material

Aluminum

SteelTensile strength Rm≥ 220 N/mm2≥ 600 N/mm2

Yield strength Rp,0.2 oryield point Re–≥ 400 N/mm2

Shear strength τm

130 N/mm2≥ 390 N/mm2

Interface pressure PG≥ 250 N/mm

≥ 660 N/mm

Modulus of elasticity E(at 20 °C)

70 kN/mm2 to
75 kN/mm2

200 kN/mm2 to
215 kN/mm2

Coefficient of thermal
expansion αtherm (at 20 °C)-6 -1≤ 25 · 10 K

10 · 10–6K–1 to17 · 10–6K–1

Surface roughness RZ≤ 16 µm

Friction values

Mounting surfaces must be clean and free ofgrease. Use screws and washers in thecondition as delivered.

Tightening process

Use a signaling torque tool according toDIN EN ISO 6789;
accuracy ±6 %Mounting temperature

15 °C to 35 °C

2

Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

25

Mounting accessories
ScrewsScrews (central screw, mounting screws) are not included in delivery.
They can be ordered separately.
1)

ECN 1319
EQN 1331
EBI 1335

ScrewsCentral screw for
fastening the shaft

DIN 6912-M5×30-08.8-MKL ID 202264-76 10 or
100 pieces

Mounting screw
for flange

ISO 4762-M4×10-8.8-MKL

1)

Lot size

ID 202264-85 30 or
300 pieces

With coating for materially bonding anti-rotation lock

Please note the information on screws from HEIDENHAIN in the brochure titled Encoders for Servo Drives, chapter General mechanical information under Rotary encoders with functional safety.
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 only to the connector of the cable assembly, and not to the wires.
ID 1075573-01
For further mounting information and mounting aids, refer to the mounting instructions and the Encoders for Servo Drives brochure. The installation can beinspected with the PWM 21 and the ATS software (see document 1082415).

6Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

Electrical connection

Cables
EPG encoder cable inside the motor  3.7 mm (with shield crimping  6.1 mm); 1 x (4 × 0.06 mm2) + 4 x 0.06 mm2 andTPE wires 2 x 0.16 mm2 for temperature sensor
With PCB connector, 16-pin and
M23 SpeedTEC angle flange socket, male, 9-pin1)

ID 1120948-xx

Note for safety-related applications:• Provide bit error rate as per specification 533095!
• CE compliance of the complete system must be documented!

SpeedTEC is a registered trademark of TE Connectivity Industrial GmbHPUR adapter and connecting cable  6 m; (4 × 0.14 mm2) + (4 × 0.34 mm2);
AP= 0.34 mm2

M12 connector,8-pin

M23 connector,9-pin

Connecting cable with M23 connector, female,9-pin and M12 coupling, male, 8-pin–ID 745796-xx

Adapter cable with M12 connector, female, 8-pin
and D-sub connector, female, 15-pin

ID 533627-xx

Adapter cable with M12 connector, female, 8-pin
and D-sub connector, male, 15-pin

ID 524599-xx

Connecting cable with M12 connector, female,
8-pin and without connecting element

ID 634265-xx1)

AP: Cross section of power lines1)
Connecting element must be suitable for the maximum clock frequency used
Note for safety-related applications:• Provide bit error rate as per specification 533095!
• CE compliance of the complete system must be documented!

Product Information ECN 1319, EQI 1331, EBI 1335   09/20187

Electrical connection

Pin layout of ECI, EQI
Coupling, 8-pin or
M12 flange socket,8-pin

M23 SpeedTEC
angle flange socket,
9-pin

PCB connector, 16-pin
16Voltage supplyM12M23161)

Serial data transfer

Other signals

82513476//

37485612//

1b6a4b3a6b1a2b5a8a8bUP

SensorUP0VSensor
0V

DATA

DATA

CLOCKCLOCKT+1)

T–1)

Brown/
GreenBlueWhite/
GreenWhite

Gray

Pink

VioletYellowBrown

Green	Connections for external temperature sensor; evaluation optimized for KTY 84-130 (see Temperature measurement in motors in
the Encoders for Servo Drives brochure)

Cable shield connected to housing; UP = Power supply voltage
Sensor: The sense line is connected in the encoder with the corresponding power line.
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.
SpeedTEC is a registered trademark of TE Connectivity Industrial GmbH8

Product Information ECN 1319, EQI 1331, EBI 1335   09/2018

Pin layout of EBI
Coupling, 8-pin or
M12 flange socket,8-pin

M23 SpeedTEC
angle flange socket,9-pin

PCB connector, 16-pin
16Voltage supplyM12M2316

Serial data transfer

Other signals

82513476//

37485612//

1b6a4b3a6b1a2b5a8a8bUPUBAT0 V2)

0 VBAT2)

DATA

DATA

CLOCKCLOCKT+1)

T–1)

Brown/
GreenBlueWhite/
GreenWhite

Gray

Pink

VioletYellowBrown

Green1)	Connections for external temperature sensor; evaluation optimized for KTY 84-130 (see Temperature measurement in motors inthe Encoders for Servo Drives brochure)2)
Connected inside encoder
Cable shield connected to housing; UP = Power supply voltageSensor: The sense line is connected in the encoder with the corresponding power line.
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.
SpeedTEC is a registered trademark of TE Connectivity Industrial GmbH           

1000353 · 04 · A · 02 · 09/2018 · 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.
More information:
Comply with the requirements described in the following documents to ensure thecorrect operation of the encoder:• Encoders for Servo Drives brochure:208922-xx• Cables and Connectors brochure:1206103-xx• Interfaces brochure:
1078628-xx• Mounting instructions for ECI 1319, EQI 1331:
1000453-xx• Safety-Related Position Measuring Systems Technical Information:
596632• For implementation in a safe control or inverter, refer to Specification:
533095and Supplementary Catalog of Measures (SIL 3, PL e):
10003449