be grounded directly at both ends if they are in the same ground line with no significant
voltage drop between the end points.
Connect the conductors to the appropriate terminals of the control unit or optional terminal
block X504.
Connecting a 230/115 V AC auxiliary voltage supply (UPS, option +G307)
Wire the external control voltage to terminal block X307 as shown below.
Internal wiring of UPS supervision: circuit breaker or fuse
off/fault = contact open.
1
Connecting the emergency stop push buttons (options +Q951, +Q952, +Q963, +Q964,
+Q978,+Q979)
Connect external emergency stop push buttons according to the circuit diagrams delivered
with the drive.
Wiring the starter for auxiliary motor fan (options +M6xx)
Connect the power supply wires for the auxiliary motor fan to terminal blocks X601…X605
according to the circuit diagrams delivered with the drive.
Wiring the PTC thermistor relay(s) (options +L505, +2L505, +L513 and +2L513)
The external wiring of option +2L505 and +2L513 (two thermistor relays) is shown below.
For example, one relay can be used to monitor the motor windings, the other to monitor the
bearings. The maximum contact load capacity is 250 V AC 10 A. For the actual wiring, see
the circuit diagram delivered with the drive. For instructions on commissioning options +L513
and +2L513, see ATEX-certified motor thermal protection functions for cabinet-built ACS880
drives (options +L513+Q971 and +L514+Q971) user's manual (3AXD50000014979 [English]).
128 Electrical installation
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