Danfoss VLT Refrigeration Drive FC 103 Operating Instructions Manual page 77

Diagnostics and Troubleshoo...
ALARM 72, Dangerous failure
STO with trip lock. Unexpected signal levels on safe stop
and digital input from the VLT
112.
WARNING 73, Safe Stop auto restart
Safe Torque Off activated. With automatic restart enabled,
the motor can start when the fault is cleared.
WARNING 76, Power unit setup
The required number of power units does not match the
detected number of active power units.
Troubleshooting
When replacing an F-frame module, this warning occurs, if
the power-specific data in the module power card does
not match the rest of the frequency converter. Confirm
that the spare part and its power card are the correct part
number.
WARNING 77, Reduced power mode
The frequency converter is operating in reduced power
mode (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 has an incorrect part number or is not
installed. The 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. To clear the alarm, reset the unit.
ALARM 81, CSIV corrupt
CSIV file has syntax errors.
ALARM 82, CSIV parameter error
CSIV failed to initialise a parameter.
ALARM 85, Dang fail PB
PROFIBUS/PROFIsafe error.
WARNING/ALARM 104, Mixing fan fault
The fan is not operating. The fan monitor checks that the
fan is spinning at power-up or whenever the mixing fan is
turned on. The mixing-fan fault can be configured as a
warning or an alarm trip in parameter 14-53 Fan Monitor.
Troubleshooting
•
Cycle power to the frequency converter to
determine if the warning/alarm returns.
ALARM 243, Brake IGBT
This alarm is only for enclosure size F frequency converters.
It is equivalent to Alarm 27. The report value in the alarm
log indicates which power module generated the alarm:
1 = Left most inverter module.
2 = Middle inverter module in enclosure sizes F12
or F13.
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2 = Right inverter module in enclosure sizes F10
or F11.
2 = Second frequency converter from the left
inverter module in enclosure size F14.
3 = Right inverter module in enclosure sizes F12
or F13.
3 = Third from the left intverter module in
enclosure size F14 or F15.
4 = Far right inverter module in enclosure size
F14.
5 = Rectifier module.
6 = Right rectifier module in enclosure size F14 or
F15.
ALARM 244, Heat Sink temperature
This alarm is only for enclosure type F frequency
converters. It is equivalent to Alarm 29. The report value in
the alarm log indicates which power module generated
the alarm:
1 = Left most inverter module.
2 = Middle inverter module in enclosure size F12
or F13.
2 = Right inverter module in enclosure size F10 or
F11.
2 = Second frequency converter from the left
inverter module in enclosure size F14 or F15.
3 = Rght inverter module in enclosure sizes F12
or F13.
3 = Tird from the left intverter module in
enclosure size F14 or F15.
4 = Far right inverter module in enclosure sizes
F14 or F15.
5 = Rectifier module.
6 = Right rectifier module in enclosure sizes F14
or F15.
ALARM 245, Heat Sink sensor
This alarm is only for enclosure size F frequency converters.
It is equivalent to Alarm 39. The report value in the alarm
log indicates which power module generated the alarm:
1 = Left most inverter module.
2 = Middle inverter module in enclosure sizes F12
or F13.
2 = Right inverter module in enclosure sizes F10
or F11.
2 = Second frequency converter from the left
inverter module in enclosure size F14 or F15.
3 = Right inverter module in enclosure sizes F12
or F13.
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