Ground Fault Protection; Settings; Communication Fault - ABB ACS800 Series Firmware Manual

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Ground Fault Protection

The Ground Fault Protection detects ground faults in the motor or motor cable.The
protection is based on sum current measurement.
• A ground fault in the line supply does not activate the protection.
• In a grounded supply, the protection activates in 200 microseconds.
• In floating supply networks, the line supply capacitance should be 1 microF or
more.
• The capacitive currents due to screened copper motor cables up to 1,000 feet
(300 meters) do not activate the protection.
• Ground fault protection is deactivated when the drive is stopped.
Note: With parallel connected inverter modules, the ground fault indication is
CUR UNBAL xx. See chapter

Settings

Parameter 30.17.

Communication Fault

The Communication Fault function supervises the communication between the drive
and an external control device (e.g. a fieldbus adapter module).
Settings
Parameters 30.18...30.19.
Program features
Fault tracing.