HEIDENHAIN ECI 1119, EQI 1131 Product Information

Product Information

ECI 1119
EQI 1131

Absolute Rotary Encoders without
Integral Bearings

Suited for safety-related
applications up to SIL 3 when
coupled with additional measures

4/2014

ECI 1119, EQI 1131

Rotary encoders for absolute position values with safe singleturn information

•

Rugged inductive scanning principle

•

Mounting-compatible to photoelectric rotary encoders with 75A stator coupling

•

70C mounting flange

•

Ø 6 mm blind hollow shaft for axial clamping with positive lock (1KA) or without
(82A)

•

Required mating dimensions with M3×30 central screw and version for customer
cost optimization upon request



= Bearing of mating shaft

M1

=

Measuring point for operating temperature

M2

=

Measuring point for vibration
1 = Contact surface of slot
2 = Chamfer is obligatory at start of thread for materially bonding anti-rotation lock
3 = Shaft; ensure full-surface contact!
4 = Slot required only for ECN/EQN and ECI/EQI with WELLA1 = 1KA
5 = Flange surface ECI/EQI; ensure full-surface contact!
6 = ECN/EQN coupling surface
7 = Maximum permissible deviation between shaft and coupling surfaces. Compensation of mounting tolerances and thermal expansion,
for which ±0.15 mm of dynamic axial motion is permitted
8 = Maximum permissible deviation between shaft and flange surfaces. Compensation of mounting tolerances and thermal expansion
9 = ECI/EBI flange surface; ensure full-surface contact!
10 = Undercut
11 = Possible centering hole
12 = Opening for plug connector min. 1.5 mm larger all around
13 = Screw ISO 4762 – M3x10 – 8.8 – MKL, tightening torque 1±0.1 Nm
14 = Screw ISO 4762 – M3x25 – 8.8 – MKL, tightening torque 1±0.1 Nm
15 = Maintain a distance of at least 1 mm to the cover. Ensure opening for the connector!
16 = Positive-locking element. Ensure correct engagement in slot 4
17 = Direction of shaft rotation for output signals as per the interface description

Required mating dimensions

Specifications ECI 1119 – Singleturn EQI 1131 – Multiturn

These data apply for Shaft 1KA: ID 826930-01/-51

1)

Shaft 82A: ID 826930-02/-52

1)

Shaft 1KA: ID 826980-01/-51

1)

Shaft 82A: ID 826980-02/-52

1)

Functional safety

For applications up to

As single-encoder system for monitoring and closed-loop functions

•

SIL 2 according to EN 61508 (further basis for testing: EN 61800-5-2)

•

Category 3, PL d according to EN ISO 13849-1:2008

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

PFH

SIL 2: ≤ 15 x 10

-9

(probability of dangerous failure per hour)

SIL 3: ≤ 2 x 10

-9

Safe position

2)

Encoder: ± 0.88° (safety-related measuring step SM = 0.35°)
Mechanical coupling for shaft 82A: ± 0°; for shaft 1KA: ± 2° (fault exclusion for loosening of shaft and

stator coupling, designed for accelerations on stator of: ≤ 400 m/s

2

; on the rotor of: ≤ 600 m/s

2

)

Interface EnDat 2.2

Ordering designation EnDat22

Position values/revolution 524 288 (19 bits)

Revolutions - 4096 (12 bits)

Calculation time t

cal

Clock frequency

≤ 5 µs
≤ 16 MHz

System accuracy

± 120"

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

3)

)

Cable length

≤ 100 m (see EnDat description in the Interfaces of HEIDENHAIN Encoders catalog)

Voltage supply 3.6 V DC to 14 V

Power consumption

4)

(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*

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

Spindle speed

≤ 15 000 min

-1

≤ 12 000 min

-1

Moment of inertia of rotor

0.3 × 10

-6

kgm

2

Angular acceleration of rotor

≤ 1 x 10

5

rad/s

2

Axial motion of measured shaft

≤ ± 0.4 mm

Vibration 55 to 2000 Hz

5)

Shock 6 ms

Stator: ≤ 400 m/s

2

; rotor: ≤ 600 m/s

2

(EN 60 068-2-6)

≤ 2000 m/s

2

(EN 60 068-2-27)

Operating temperature –40 °C to 110 °C

Threshold sensitivity Error message

for exceeded temperature

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

Relative humidity

≤ 93 % (40 °C/21 d as per EN 60 068-2-78); without condensation

Protection EN 60 529 IP 00 (see Insulation under General mechanical information in the Encoders for Servo Drives catalog;

ensure CE conformity of the overall system through installation measures!)

Weight

≈ 0.04 kg

* Please select when ordering

1) Rotary encoders in a collective package

2) Further tolerances may occur in subsequent electronics after position value comparison (contact manufacturer of subsequent
electronics)

3) See Temperature measurement in motors in the Encoders for Servo Drives catalog

4) See General electrical information in the Interfaces of HEIDENHAIN Encoders catalog

5) 10 Hz to 55 Hz, constant over distance, 4.9 mm peak to peak