Danfoss vlt FC 102 Operating Guide

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Troubleshooting
Troubleshoot the system.
Reset the drive when the fault is cleared.
7.6.81 WARNING 97, Stop Delayed
Stopping the motor has been delayed due to short-cycle protection. Parameter 22-76 Interval between Starts is enabled.
Troubleshooting
Troubleshoot the system.
Reset the drive when the fault is cleared.
7.6.82 WARNING 98, Clock Fault
Time is not set or the RTC clock has failed.
Troubleshooting
Reset the clock in parameter 0-70 Date and Time.
7.6.83 ALARM 99, Locked Rotor
Cause
The rotor is blocked.
Troubleshooting
Check if the motor shaft is locked.
Check if the start current triggers the current limit set in parameter 4-18 Current Limit.
Check if it increases the value in parameter 30-23 Locked Rotor Detection Time [s].
7.6.84 WARNING 200, Fire Mode
This warning indicates that the drive operates in fire mode. The warning clears when fire mode is removed. See the fire mode data
in the alarm log.
7.6.85 WARNING 201, Fire Mode was Active
Cycle power to the unit to remove the warning. See the fire mode data in the alarm log.
7.6.86 WARNING 202, Fire Mode Limits Exceeded
While operating in fire mode, 1 or more alarm conditions have been ignored, which would normally trip the unit. Operating in this
condition voids the warranty of the unit.
Troubleshooting
Cycle power to the unit to remove the warning. See the fire mode data in the alarm log.
7.6.87 WARNING 203, Missing Motor
A multi-motor underload situation is detected. This warning could indicate that there is a missing motor.
Troubleshooting
Inspect the system for proper operation.
7.6.88 WARNING 204, Locked Rotor
An overload condition is detected for a drive operating multi-motors. This could indicate a locked rotor.
Troubleshooting
Inspect the motor proper operation.
7.6.89 WARNING 250, New Spare Part
Cause
A component in the drive system has been replaced.
Troubleshooting
Enter the serial number and type code for canceling the Trip Lock status after a power cycle.
AQ267037536117en-000101 / 130R0083 | 81Danfoss A/S © 2023.09
Diagnostics and Troubleshooting
VLT HVAC Drive FC 102
Operating Guide

Danfoss vlt FC 102 Specifications

General

Category	DC Drives
Model	Danfoss VLT FC 102
Output voltage range	0 to rated motor voltage
Power range	0.37 kW to 200 kW
Communication interfaces	RS-485
Protection features	Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection
Cooling method	Air-cooled
Enclosure rating	IP20, IP21, IP55 (depending on model)
Approvals	CE, UL, cUL