EK8W

Motor series and size

DRN../DRU../DR2.63 – 355

Pulse output

sin/cos + RS485

Supply voltage

U_B

DC 7 V – 30 V

Supply voltage for design as safety encoder

U_{B_FS}

DC 7 V – 30 V

Maximum current consumption, free of load

I_in

100 mA (at U_B = 7 V)

Maximum pulse frequency

f_{pulse_max}

200 kHz

Direction of rotation

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

Incremental tracks; periods per revolution

A, B

2048 (11 bits)

C

–

Position resolution, increments per revolution

A, B

65536 (16 bits)

(RS485)

Voltage output signal, differential

(peak-to-peak)

(A’ = A - A; B’ = B -) B

U_{t_diff}

1 V ± 10%

Voltage output signal
non-differential

(peak-to-peak)

U_t

0.5 V ± 10%

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

U_{t_o}

2.5 V ± 0.3 V

Total harmonic distortion (THD)

40 dB (1%), 60 dB (0.1%) from 7th harmonic

Load resistance/load current
differential

R_L/I_L

120 Ω ± 10%

Resistance between track and reference ground

R_gnd

≥ 1 kΩ

Load capacitance, output

≤ 20 nF

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}

–

Phase angle track C’,

n = constant

k, l

–

Signal width track C

W_C

–

Signal logic track C

–

Voltage output signal, differential

(peak-to-peak)

(D’ = D- D)

U_{t_diff}

Typical: 6.6 V – 10 V (± 10%)

Voltage output signal
non-differential

(peak-to-peak)
(D, /D)

U_t

Typical: 3.3 V – 5 V (± 10%)

Signal level output, offset nominal against 0 V
(D, /D) V

U_{t_o}

Typical: 0 V

Voltage input signal, differential

(peak-to-peak)

(D’ = D- D)

U_{t_diff}

Typical: 6.6 V – 10 V (± 10%)

Voltage input signal,
non-differential

(peak-to-peak)
(D, /D)

U_t

Typical: 3.3 V – 5 V (± 10%)

Signal level input, offset nominal against 0 V
(D, /D) V

U_{t_o}

Typical: 0 V

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

–

Phase offset A : B; A : B

n = constant

90° ±2°

Accuracy of the incremental section Due to the stiffness of the torque bracket, you have to take into account an automatically resetting twist of ±0.6° (depending on the direction of rotation) of the encoder housing compared to the encoder shaft.

±0.0194° (±70")

Accuracy of the absolute section

±3 LSB (Least Significant Bit)

Scanning code/counting direction

Binary code, ascending with the direction of rotation specified above

Multi-turn resolution

–

Communication, interface

RS485 (asynchronous, serial)

Communication, modules

Driver to EIA RS485

Clock frequency/bandwidth

9600 baud

Clock-pulse space period

–

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 (on the encoder housing: 10 mT / 8 kA/m)

Maximum speed

n_max

6000 min^-1

Maximum cable lengthObserve the requirements for the cables.

100 m

Duration until fault message
(disabled outputs)The encoder has a self-diagnostic function. If a fault is detected, the sensor reports it to the encoder evaluation unit by deactivating the output signals.

≤ 25 ms + 3/4 revolution

Activation time of the encoder-internal diagnostics after switching on

200 ms

Degree of protection according to EN 60529

IP66

Installation altitude

h

≤ 4000 m above sea level

Explosion protection marking ATEX/IECEx

–

IECEx certificate of conformity depending on encoder

–

Corrosion protection; surface protection

KS, OS1 – OS4, OSG

Connection

Integrated encoder connector on the fan guard (can be preassembled and plugged in the field)

Storage temperature

°C

-15 to +70

Maximum angular acceleration

2×10⁴ rad/s^²

Electronic nameplate

RS485 (serial, asynchronous); 1920 bytes

Maximum degree of pollution during installation work

Degree of pollution 1 (IEC 61010-1, EN 60664-1, VDE 0110-1)

Ambient temperature of motor

DR2C71 – 180

°C

-30 to +60

Functional safety

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