ABB ACS350 Series, User Manual

Page: 117 / 314

Program features
117
Underload Protection
Loss of motor load may indicate a process malfunction. The drive provides an
underload function to protect the machinery and process in such a serious fault
condition. Supervision limits - underload curve and underload time - can be chosen
as well as the action taken by the drive upon the underload condition (alarm
indication / fault indication & drive stop / no reaction).
Settings
Parameters 3013 ... 3015
Earth Fault Protection
The Earth Fault Protection detects earth faults in the motor or motor cable. The
protection is active only during start.
An earth fault in the input power line does not activate the protection.
Settings
Parameter 3017 EARTH FAULT
Incorrect wiring
Defines the operation when incorrect input power cable connection is detected.
Settings
Parameter 3023 WIRING FAULT
Input phase loss
Input phase loss protection circuits supervise the input power cable connection
status by detecting intermediate circuit ripple. If a phase is lost, the ripple increases.
Settings
Parameter 3016 SUPPLY PHASE
Preprogrammed faults
Overcurrent
The overcurrent trip limit for the drive is 325% of the drive nominal current.
DC overvoltage
The DC overvoltage trip limit is 420 V (for 200 V drives) and 840 V (for 400 V drives).
DC undervoltage
The DC undervoltage trip limit is 162 V (for 200 V drives) and 308 V (for 400 V
drives).