Danfoss VLT AHF 005 User Manual

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9.4.55 ALARM 58, AMA Internal Fault
Cause
Internal fault.
Troubleshooting
Contact the Danfoss supplier.
9.4.56 WARNING 59, Current Limit
Cause
The current is higher than the value in parameter 4-18 Current Limit.
Troubleshooting
Ensure that the motor data in parameters 1-20 to 1-25 is set correctly.
Increase the current limit if necessary. Ensure that the system can operate safely at a higher limit.
9.4.57 ALARM 60, External Interlock
Cause
A digital input signal indicates a fault condition external to the drive. Within the control compartment, the following 3 relay con-
tacts are connected in series to 1 digital input that is used as a thermal overload relay:
KFJ.1 monitors the heat within the input power options cabinet.
KFJ.2 monitors the heat within the output filter cabinet.
KFJ.3 monitors the heat within the input filter cabinet.
When the thermal switches in any of these cabinets open due to overtemperature, the drive trips on External Interlock [A60].
Troubleshooting
Open the control compartment and check for any lights in relays KFJ.1, KFJ.2, and KFJ.3. If no lights are present, check for other
external interlocks.
Clear the external fault condition.
To resume normal operation, apply 24 V DC to the terminal programmed for external interlock.
Reset the drive.
9.4.58 WARNING/ALARM 61, Feedback Error
Cause
An error between calculated speed and speed measurement from feedback device.
Troubleshooting
Check the settings for warning/alarm/disabling in parameter 4-30 Motor Feedback Loss Function.
Set the tolerable error in parameter 4-31 Motor Feedback Speed Error.
Set the tolerable feedback loss time in parameter 4-32 Motor Feedback Loss Timeout.
9.4.59 WARNING 62, Output Frequency at Maximum Limit
Cause
The output frequency has reached the value set in parameter 4-19 Max Output Frequency.
Troubleshooting
Check the application for possible causes.
Increase the output frequency limit. Be sure that the system can operate safely at a higher output frequency.
The warning clears when the output drops below the maximum limit.
9.4.60 WARNING 64, Voltage Limit
Cause
The load and speed combination demands a motor voltage higher than the actual DC-link voltage.
AQ262141314214en-000301 / 130R0880146 | Danfoss A/S © 2021.11
Maintenance, Diagnostics, and
Troubleshooting
VLT® HVAC Drive FC 102
Operating Guide

Danfoss VLT AHF 005 Specifications

General

Brand	Danfoss
Model	VLT AHF 005
Category	DC Drives
Language	English