Danfoss VLT AutomationDrive FC 301 Programming Manual page 208

Troubleshooting
the frequency converter is set to run with fewer inverters,
and remains on.
ALARM 78, Tracking error
The difference between set point value and actual value
has exceeded the value in 4-35 Tracking Error. Disable the
function by 4-34 Tracking Error Function or select an alarm/
warning also in 4-34 Tracking Error Function. Investigate the
mechanics around the load and motor, check feedback
connections from motor – encoder – to frequency
converter. Select motor feedback function in 4-30 Motor
Feedback Loss Function. Adjust tracking error band in
5 5
4-35 Tracking Error and 4-37 Tracking Error Ramping.
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 init a parameter.
ALARM 83, Illegal option combination
The mounted options are incompatible.
ALARM 84, No safety option
The safety option was removed without applying a general
reset. Reconnect the safety option.
ALARM 88, Option detection
A change in the option layout was detected. 14-89 Option
Detection is set to [0] Frozen configuration and the option
layout has been changed.
•
To apply the change, enable option layout
changes in 14-89 Option Detection.
•
Alternatively, restore the correct option configu-
ration.
WARNING 89, Mechanical brake sliding
The hoist brake monitor has detected a motor speed > 10
RPM.
ALARM 90, Feedback monitor
Check the connection to encoder/resolver option and
eventually replace the MCB 102 or MCB 103.
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 99, Blocked rotor
Rotor is blocked.
206
®
VLT AutomationDrive FC 301/302 Programming Guide
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 by 14-53 Fan Monitor.
Troubleshooting
WARNING/ALARM 122, Mot. rotat. unexp.
Frequency converter is performing a function that requires
the motor to be at standstill, e.g. DC hold for PM motors.
WARNING 163, ATEX ETR cur.lim.warning
The frequency converter has run above the characteristic
curve for more than 50 s. The warning is activated at 83%
and de-activated at 65% of the permitted thermal
overload.
ALARM 164, ATEX ETR cur.lim.alarm
Operating above the characteristic curve for more than 60
s within a period of 600 s activates the alarm and the
frequency converter trips.
WARNING 165, ATEX ETR freq.lim.warning
The frequency converter is running more than 50 s below
the permitted minimum frequency (1-98 ATEX ETR interpol.
points freq. [0]).
ALARM 166, ATEX ETR freq.lim.alarm
The frequency converter has operated more than 60 s (in a
period of 600 s) below the permitted minimum frequency
(1-98 ATEX ETR interpol. points freq. [0]).
ALARM 246, Power card supply
This alarm is only for F Frame frequency converters. It is
equivalent to Alarm 46. The report value in the alarm log
indicates which power module generated the alarm:
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. Reset to remove the warning
and resume normal operation.
MG33MH02 - Rev. 2013-09-30
Cycle power to the frequency converter to
determine if the warning/alarm returns.
1 = left most inverter module.
2 = middle inverter module in F2 or F4 frequency
converter.
2 = right inverter module in F1 or F3 frequency
converter.
3 = right inverter module in F2 or F4 frequency
converter.
5 = rectifier module.