EI8R, EI8C

Motor series and size

DRN../DRU../DR2.71 – 132S

Pulse output

TTL (RS422)

HTL

Supply voltage

U_B

DC 7 V – 30 V

DC 7 V – 30 V

Maximum current consumption, free of load

I_in

100 mA

Maximum pulse frequency

f_{pulse_max}

102.4 kHz

Direction of rotation

A before B when looking at the motor output shaft
in clockwise rotation

Incremental tracks; periods per revolution

A, B

1024 (10 bits)

C

1

Position resolution, increments per revolution

A, B

4096 (12 bits)

Voltage output signal,
differential

(peak-to-peak)

(A’ = A - A; B’ = B - B)

U_{t_diff}

–

Voltage output signal,
non-differential

(peak-to-peak)

U_t

U_Low ≤ 0.5 V

U_High ≥ 2.5 V

U_Low ≤ 3 V

U_High ≥ U_B - 3.5 V

Signal level output, offset,
nominal against 0 V
(A, B, C, A,B, C)

U_{t_o}

–

Load current

I_L

25 mA

60 mA

Terminating resistor

kΩ

0.12

1 – 3

Resistance between tracks and reference ground

R_gnd

–

Load capacitance, output

C_o

–

Voltage output signal,
differential (C’ = C - C)

(peak-to-peak)

U_{t_diff}

e

–

C track offset

g

–

Voltage output signal, non-differential (C, C)

(peak-to-peak)

U_{t_C}

U_Low ≤ 0.5 V

U_High ≥ 2.5 V

U_Low ≤ 3 V

U_High ≥ U_B - 2.5 V

Phase angle track C’,

n = constant

k, l

–

Signal width track C

W_C

90° electrical

Signal logic track C

C = log 1 when A = B = log 1

Pulse duty factor in accordance with IEC 60469-1, n = constant

50% ± 10%

Phase offset A : B; A : B

n = constant

d

90° ±20°

Incremental part accuracy

±0.2° (±720")

Vibration resistance in accordance with EN 60068‑2‑6

≤ 10 g (f > 18.5 Hz)

Shock resistance in accordance with EN 60068‑2‑27

≤ 100 g (t = 6 ms, 18 pulses)

Maximum permissible magnetic field external to the motor
(outer motor contour)

25 mT / 20 kA/m

Maximum speed

n_max

6000 min^-1

Maximum cable lengthObserve the limitations of the motor and/or the frequency inverter.

100 m

50 m: MOVI-C^® MOVITRAC^® advanced inverters from SEW-EURODRIVE with connection to the binary input terminals and 24 V supply

100 m: Other inverters from SEW-EURODRIVE or third-party devices.

Duration until fault message
(disabled outputs)

–

Activation time of rotary encoder internal diagnostics after switching on

–

Degree of protection according to EN 60529

IP66

Installation altitude

h

≤ 4000 m above sea level

≤ 4000 m above sea level

Corrosion protection; surface protection

KS, OS1 – OS4, OSG

Connection

• M23 connector
• Connection unit with terminals in the terminal box that can be assembled in the field
• M12 connector (without negated tracks in non-differential/single-ended operation)

Ambient temperature of motor

°C

-30 to +60

Storage temperature

°C

-15 to +70

Maximum angular acceleration

10⁴ rad/s^²

Electronic nameplate

–

Functional safety

–