Special Settings Related To High-Speed Drives; Limits; Dual Use And Maximum Output Frequency - ABB ACS880 Manual

You can re-open the same monitoring configuration later by choosing Open... . Note that,
in future sessions, you will have to enable service-level parameters again to be able to
record those signals.
Always start recording before you start the motor.

Special settings related to high-speed drives

Limits

￭
Set parameters in group 30 Limits:
• Maximum current limits
WARNING!
Make sure to set the current limits to either the motor nominal current values,
or according to short-time motor overload current values if given in the motor
data sheet. This is important because the inverter current rating can be much
higher than the motor current rating because of required inverter current
derating at high speeds.
• Maximum speed limits
• Overspeed trip margin
• Minimum and maximum torque limits
• Disable overvoltage control if an IGBT supply unit is in use. Use a brake chopper and
resistor assembly for overvoltage protection.
• Disable undervoltage control. In case of an AC supply break, any test run in progress
will be interrupted. If undervoltage control is needed during supply breaks, use a UPS
to power the essential auxiliary circuits of the drive system.

Dual use and maximum output frequency

￭
If an output frequency above 598 Hz is required, the inverter modules must be equipped
with a dual-use license (option +N8200). The license enables higher output frequencies
when bit 0 (Dual use) is set in parameter 95.21 HW options word 2.
Start-up 29