Wiring - ABB ACS880-07 User Manual

Wiring

The operating switch and the indication lamp for the POUS function are not factory-
installed. The user must install and wire them to the drive on site.
There are double contacts in the POUS switch [Sxx] and double wiring (two-channel
connection) between the button and the POUS safety relay [A65]. The safety relay detects
cross faults and faults across one contact from the POUS switch. This function must be
used in a redundant manner, that is, the POUS switch must be connected to both
terminals with a separate contact.
Wire the POUS switch to the appropriate terminals inside the drive cabinet. For the POUS
indication lamp [Pxx], we recommend an LED indication lamp. See the circuit diagrams
delivered with the drive. Follow the rules below:
1. Use only double-contact switches. We recommend approved and lockable switches.
2. Connect the switch with two conductors (two-channel connection). Note: Keep the
channels separate. Otherwise the cross-fault detection of the POUS safety relay trips.
3. Use a shielded, twisted pair cable. We recommend a double-shielded cable and gold-
plated contacts in the POUS switch.
4. Ensure that the sum resistance for one channel (loop resistance) does not exceed
70 Ohm.
5. Follow the general control cable installation instructions given in the drive hardware
manual.
Option description and instructions 15