Connecting The Control Cables To The Internal Control Unit; Connecting External Power Supply Wires To The Control Units - ABB ACQ580-34 Hardware Manual

68 Electrical installation

Connecting the control cables to the internal control unit

See chapter Control unit (page 73)
program. The default I/O connections can be different with some hardware options, see the
circuit diagrams delivered with the drive for the actual wiring.
1. Remove the middle front cover of the drive module.
2. Fasten the option modules if not fastened already.
3. Ground the outer control cable shields 360 degrees at the cabinet entry plate
(recommendation).
4. Route the control cables along the control cable duct from bottom or top to the control
unit.
5. Ground the shields of the control cables at the clamp plate. The shields should be
continuous as close to the terminals of the control unit as possible. Only remove the
outer jacket of the cable at the cable clamp so that the clamp presses on the bare shield.
The shield (especially in case of multiple shields) can also be terminated with a lug and
fastened with a screw at the clamp plate. Leave the other end of the shield unconnected
or ground it indirectly via a few nanofarads high-frequency capacitor, eg, 3.3 nF / 630 V.
The shield can also be grounded directly at both ends if they are in the same ground
line with no significant voltage drop between the end points. Tighten the screws to
secure the connection.
6. Connect the conductors to the appropriate detachable terminals of the control unit. Use
shrink tubing or insulating tape to contain any stray strands. Tighten the screws to secure
the connection.
Note: Keep any signal wire pairs twisted as close to the terminals as possible. Twisting
the wire with its return wire reduces disturbances caused by inductive coupling.
7. Install the middle front cover back.
￭

Connecting external power supply wires to the control units

The external power supply is used to keep the drive control unit (CCU) and line-side converter
control unit (ZCU) powered when the main power is off.
When external power supply is used, both control units should be connected to the external
supply.
1. To connect CCU to external power: Connect external power supply cables to terminals
40 and 41 on the CCU control unit.
2. To connect ZCU to external power: Connect the provided wire harness from the "ISU
ZCU XPOW" plug connector to CCU terminals 40 and 41, or directly to an external
power supply.
RED wire = (+) and BLACK wire = (-)
for the default I/O connections of the drive control