Supplying Power For The Auxiliary Circuits; Using Power Factor Compensation Capacitors With The Drive; Implementing A Safety Switch Between The Drive And The Motor; Using A Contactor Between The Drive And The Motor - ABB ACS580-07 Hardware Manual

68 Guidelines for planning the electrical installation

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).
Supply this option from an external power source:
• +G300 Cabinet heaters (230 or 115 V AC; external fuse: 16 A gG).

Using power factor compensation capacitors with the drive

Power factor compensation is not needed with AC drives.
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.
Implementing a safety switch between the drive and the
motor
ABB recommends 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.

Using a contactor between the drive and the motor

Implementing the control of the output contactor depends on how you select the drive to
operate. See also section
When you have selected to use
• vector control mode and motor ramp stop,
open the contactor as follows:
1. Give a stop command to the drive.
2. Wait until the drive decelerates the motor to zero speed.
3. Open the contactor.
When you have selected to use
• vector control mode and motor coast stop; or scalar control mode,
open the contactor as follows:
1. Give a stop command to the drive.
2. Open the contactor.
WARNING!
When the vector control mode is in use, never open the output contactor while the
drive controls the motor. The vector control operates extremely fast, much faster
than it takes for the contactor to open its contacts. When the contactor starts
opening while the drive controls the motor, the vector control will try to maintain
the load current by immediately increasing the drive output voltage to the maximum.
This will damage, or even burn the contactor completely.
Implementing a bypass connection (page 69).