Supplying Power For The Auxiliary Circuits; Cabinets; Modules; Using Power Factor Compensation Capacitors With The Drive - ABB ACS880 Electrical Planning Instructions

Supplying power for the auxiliary circuits

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Cabinets

The drive is equipped with an auxiliary voltage transformer which supplies, for example,
control unit(s) and cooling fan(s).
The user must supply these options from external power sources:
• +G300/+G301: Cabinet heaters and/or lighting (230 or 115 V AC; external fuse: 16 A gG)
• +G307: Connection for an external uninterruptible power supply (230 or 115 V AC;
external fuse 16 A gG)
• +G313: Power supply connection for a motor space heater output (230 V AC; external
fuse 16 A gG).
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Modules

The cabinet installer must connect an auxiliary power supply for the drive. Auxiliary power
is needed, for example, by the control units and cabinet fan(s). See the appropriate hardware
manuals for the auxiliary power consumptions, connections, etc.

Using power factor compensation capacitors with the drive

Power factor compensation is not needed with AC drives. However, if a drive is to be
connected in a system with compensation capacitors installed, note the following restrictions.
WARNING!
Do not connect power factor compensation capacitors or harmonic filters to the
motor cables (between the drive and the motor). They are not meant to be used
with AC drives and can cause permanent damage to the drive or themselves.
If there are power factor compensation capacitors in parallel with the input of the drive:
1. Do not connect a high-power capacitor to the power line while the drive is connected.
The connection will cause voltage transients that may trip or even damage the drive.
2. If capacitor load is increased/decreased step by step when the AC drive is connected
to the power line, make sure that the connection steps are low enough not to cause
voltage transients that would trip the drive.
3. Check that the power factor compensation unit is suitable for use in systems with AC
drives, ie, harmonic generating loads. In such systems, the compensation unit should
typically be equipped with a blocking reactor or harmonic filter.

Using a safety switch between the drive and the motor

ABB recommends to install a safety switch between the permanent magnet motor and the
drive output. The switch is needed to isolate the motor during any maintenance work on the
drive.
Implementing the ATEX-certified Safe motor disconnection
function (option +Q971)
With option +Q971, the drive provides ATEX-certified safe motor disconnection without
contactor using the drive Safe torque off function. For more information, see
Electrical planning guidelines 31