Danfoss VLT AutomationDrive FC 302 Instruction Manual page 147

Warnings and Alarms Instruction Manual
ALARM 311, Switch. Freq. Limit
The average switching frequency of the unit exceeded the
limit. Verify that 300-10 Active Filter Nominal Voltage and
300-22 CT Nominal Voltage are set correctly. If so, contact
Danfoss or supplier.
ALARM 312, CT Range
Current transformer measurement limitation was detected.
Verify that the CTs used are an appropriate ratio.
ALARM 314, Auto CT Interrupt
Auto CT detection has been interrupted.
ALARM 315, Auto CT Error
An error was detected while performing auto CT detection.
Contact Danfoss or supplier.
WARNING 316, CT Location Error
The auto CT function could not determine the correct
locations of the CTs.
WARNING 317, CT Polarity Error
The auto CT function could not determine the correct
polarity of the CTs.
WARNING 318, CT Ratio Error
9 9
The auto CT function could not determine the correct
primary rating of the CTs.
MG37A222 Danfoss A/S © Rev. 2014-02-07 All rights reserved. 145