Danfoss VLT AutomationDrive FC 300 Operating Instructions Manual page 164

Troubleshooting VLT Automation Low Harmonic Drive Operating Instructions
ALARM 315, Auto CT Error
An error was detected while performing auto CT detection.
Contact your Danfoss supplier.
ALARM 316, CT Location Error
The Auto CT function could not determine the correct
locations of the CTs.
ALARM 317, CT Polarity Error
The Auto CT function could not determine the correct
polarity of the CTs.
ALARM 318, CT Ratio Error
The Auto CT function could not determine the correct
primary rating of the CTs.
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MG34O202 - VLT is a registered Danfoss trademark 163