Implementing The Emergency Stop Function; Implementing The Safe Torque Off Function; Using Power Factor Compensation Capacitors With The Drive; Controlling A Contactor Between Drive And Motor - ABB ACS580 Series Hardware Manual

120 Guidelines for planning the electrical installation

Implementing the emergency stop function

For safety reasons, install the emergency stop devices at each operator control
station and at other operating stations where the emergency stop may be needed.
Implement the emergency stop according to relevant standards.
Note: You can use the Safe torque off function of the drive to implement the
Emergency stop function.

Implementing the Safe torque off function

Refet to chapter The Safe torque off function (page

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. Make sure 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.

Controlling a contactor between drive and motor

The control of the output contactor depends on how you use the drive, that is,
which motor control mode and which motor stop mode you select.
If you have the vector control mode and motor ramp stop selected, open the
contactor as follows:
409).