Danfoss VLT FC 100 Instruction Manual page 79

Warnings and Alarms
NOTE!
If automatic restart is enabled, the motor may start when
the fault is cleared.
ALARM 72, Dangerous failure
Safe Stop with Trip Lock. Unexpected signal levels on safe
stop and digital input from the MCB 112 PTC thermistor
card.
WARNING 73, Safe stop auto restart
Safe stopped. With automatic restart enabled, the motor
may start when the fault is cleared.
WARNING 76, Power unit set-up
The required number of power units does not match the
detected number of active power units.
Troubleshooting:
When replacing an F-frame module, this will occur if the
power specific data in the module power card does not
match the rest of the adjustable frequency drive. Confirm
the spare part and its power card are the correct part
number.
WARNING 77, Reduced power mode
This warning indicates that the adjustable frequency drive
is operating in reduced power mode (i.e., less than the
allowed number of inverter sections). This warning will be
generated on power cycle when the adjustable frequency
drive is set to run with fewer inverters and will remain 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 initialized to default value
Parameter settings are initialized to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 81, CSIV corrupt
CSIV file has syntax errors.
ALARM 82, CSIV parameter error
CSIV failed to init a parameter.
ALARM 85, Dang fail PB
Profibus/Profisafe Error.
WARNING/ALARM 104, Mixing fan fault
The fan monitor checks that the fan is spinning at drive
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
Cycle power to the adjustable frequency drive to
determine if the warning/alarm returns.
®
VLT HVAC Drive D-Frame
Instruction Manual
WARNING 250, New spare part
A component in the adjustable frequency drive has been
replaced. Reset the adjustable frequency drive for normal
operation.
WARNING 251, New type code
The power card or other components have been replaced
and the type code changed. Reset to remove the warning
and resume normal operation.
®
MG16D222 - VLT is a registered Danfoss trademark
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