Danfoss VLT HVAC Drive FC 102 Operating Manual page 135

Operating Guide | VLT® HVAC Drive FC 102
Troubleshooting
• Remove power to the drive and repair the ground fault.
• Check for ground faults in the motor by measuring the resistance to ground of the motor cables and the motor with a
megohmmeter.
• Reset any potential individual offset in the 3 current transducers in the drive. Perform a manual initialization or perform a complete
AMA. This method is most relevant after changing the power card.
9.3.16 ALARM 15, Hardware Mismatch
Cause
A fitted option is not operational with the present control card hardware or software.
Troubleshooting
Record the value of the following parameters and contact Danfoss.
• Parameter 15-40 FC Type.
• Parameter 15-41 Power Section.
• Parameter 15-42 Voltage.
• Parameter 15-43 Software Version.
• Parameter 15-45 Actual Typecode String.
• Parameter 15-49 SW ID Control Card.
• Parameter 15-50 SW ID Power Card.
• Parameter 15-60 Option Mounted.
• Parameter 15-61 Option SW Version (for each option slot).
9.3.17 ALARM 16, Short Circuit
Cause
There is short-circuiting in the motor or motor wiring.
Troubleshooting
HIGH VOLTAGE
AC drives contain high voltage when connected to AC mains input , DC supply , or load sharing. Failure to perform installation ,
start-up, and maintenance by qualified personnel can result in death or serious injury.
Only qualified personnel must perform installation, start-up, and maintenance.
-
• Disconnect power before proceeding.
• Remove the power to the drive and repair the short circuit.
Danfoss A/S © 2018.10
W A R N I N G
Maintenance, Diagnostics, and
Troubleshooting
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