ABB DCS550 Series, Manual

Page: 38 / 316

38
Electrical installation
3ADW000379R0501 DCS550 Manual e e
Pulse encoder connection principles
Two different incremental encoder connections are available:
1. differential connection; pulse encoders generating
either voltage or current signals can be used,
2. single-ended (push pull) connection; only voltage
signals can be used
In case of a single ended 5 V encoder the jumper S4 has be set to a neutral position. To get a threshold lower
than 5 V each terminal X3:2, 4, 6 must be connected via a resistor R to GND.
Cable length
The maximum distance between pulse encoder and interface board dependents on the voltage drop of the
connecting lines and on the output and input configuration of the used components. Use cables according to
the table below. The voltage regulator can compensate the voltage drop caused by the cable. Use twisted pair
cables with pair shielding plus overall shielding:
Cable length Parallel wires for power source & GND Cable used
0 to 50 m 1 * 0.25 mm² 12 * 0.25 mm²
50 to 100 m 2 * 0.25 mm² 12 * 0.25 mm²
100 to 150 m 3 * 0.25 mm² 14 * 0.25 mm²
Cable length Parallel wires for power source & GND Cable used
0 to 164 ft. 1 * 24 AWG 12 * 24 AWG
164 to 328 ft. 2 * 24 AWG 12 * 24 AWG
328 to 492 ft. 3 * 24 AWG 14 * 24 AWG