ABB ACS880-07, Hardware Manual

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WARNING!
Never connect the drive output to the power line. The connection may damage
the drive.
Supplying power for the auxiliary circuits
The drive is equipped with an auxiliary control voltage transformer which supplies control
voltage, for example, for the control devices and cabinet fan(s).
The following options are to be supplied 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) to the control unit and control devices when the drive is not
powered
• +G313: Power supply connection (230 V AC; external fuse 16 A gG) for a motor space
heater output.
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 three phase 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.
Implementing a safety switch between the drive and the
motor
We recommend to install a safety switch between the permanent magnet synchronous
motor and the drive output. The switch is needed to isolate the motor during any maintenance
work on the drive.
Protecting the contacts of relay outputs
Inductive loads (relays, contactors, motors) cause voltage transients when switched off.
Guidelines for planning the electrical installation 91