Danfoss VLT FC 103 Operating Instructions Manual page 93

Warnings and Alarms
WARNING 77, Reduced power mode
This warning indicates that the frequency converter is
operating in reduced power mode (i.e. less than the
allowed number of inverter sections). This warning is
generated on power cycle when the frequency converter is
set to run with fewer inverters and remains on.
ALARM 79, Illegal power section configuration
The scaling card is the incorrect part number or not
installed. Also MK102 connector on the power card could
not be installed.
ALARM 80, Drive initialised to default value
Parameter settings are initialised to default settings after a
manual reset.
Troubleshooting
•
Reset the unit to clear the alarm.
ALARM 91, Analog input 54 wrong settings
Switch S202 has to be set in position OFF (voltage input)
when a KTY sensor is connected to analog input terminal
54.
ALARM 92, No flow
A no-flow condition has been detected in the system.
22-23 No-Flow Function is set for alarm.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
ALARM 93, Dry pump
A no-flow condition in the system with the frequency
converter operating at high speed may indicate a dry
pump. 22-26 Dry Pump Function is set for alarm.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
ALARM 94, End of curve
Feedback is lower than the set point. This may indicate
leakage in the system. 22-50 End of Curve Function is set for
alarm.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating
a broken belt. 22-60 Broken Belt Function is set for alarm.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
ALARM 96, Start delayed
Motor start has been delayed due to short-cycle
protection. 22-76 Interval between Starts is enabled.
Troubleshooting
•
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
MG16J202
Operating Instructions
WARNING 97, Stop delayed
Stopping the motor has been delayed due to short -cycle
protection. 22-76 Interval between Starts is enabled.
Troubleshooting
•
WARNING 98, Clock fault
Time is not set or the RTC clock has failed.
Troubleshooting
•
ALARM 99, Locked rotor
Rotor is blocked.
WARNING/ALARM 104, Mixing fan fault
The fan monitor checks that the fan is spinning at
frequency converter power-up or whenever the mixing fan
is turned on. If the fan is not operating, then the fault is
annunciated. The mixing-fan fault can be configured as a
warning or an alarm trip by 14-53 Fan Monitor.
Troubleshooting
•
ALARM 220, Overload trip
Motor overload has tripped. Indicates excess motor load.
Troubleshooting
•
•
•
WARNING 250, New spare part
A component in the frequency converter has been
replaced. Reset the frequency converter for normal
operation.
WARNING 251, New typecode
The power card or other components have been replaced
and the typecode changed.
Troubleshooting
•
Danfoss A/S © Rev. 05/2014 All rights reserved.
Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
Reset the clock in 0-70 Date and Time.
Cycle power to the frequency converter to
determine if the warning/alarm returns.
Check motor and driven load.
To reset, press [Off Reset].
Then, to restart the system press [Auto on] or
[Hand on].
Reset to remove the warning and resume normal
operation.
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