Danfoss VLT AutomationDrive FC 301 Programming Manual page 365

Troubleshooting
Troubleshooting
•
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 78, Tracking error
The difference between setpoint value and actual value
exceeds the value in parameter 4-35 Tracking Error.
Troubleshooting
•
Disable the function or select an alarm/warning
in parameter 4-34 Tracking Error Function.
•
Investigate the mechanics around the load and
motor. Check feedback connections from motor
encoder to drive.
•
Select motor feedback function in
parameter 4-30 Motor Feedback Loss Function.
•
Adjust the tracking error band in
parameter 4-35 Tracking Error and
parameter 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 initialized
Parameter settings are initialized 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 initialize 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 is detected.
Parameter 14-89 Option Detection is set to [0] Frozen config-
uration and the option layout has been changed.
•
To apply the change, enable option layout
changes in parameter 14-89 Option Detection.
•
Alternatively, restore the correct option configu-
ration.
WARNING 89, Mechanical brake sliding
The hoist brake monitor detects a motor speed exceeding
10 RPM.
M0013101
Programming Guide
ALARM 90, Feedback monitor
Check the connection to encoder/resolver option and, if
necessary, replace VLT
Resolver Input MCB 103.
ALARM 91, Analog input 54 wrong settings
Set switch S202 in position OFF (voltage input) when a
KTY sensor is connected to analog input terminal 54.
ALARM 99, Locked rotor
The rotor is blocked.
WARNING/ALARM 101, Speed monitor
The motor speed monitor value is out of range. See
parameter 4-43 Motor Speed Monitor Function.
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
•
WARNING/ALARM 122, Mot. rotat. unexp.
The frequency converter performs a function that requires
the motor to be at standstill, for example DC hold for PM
motors.
WARNING 123, Motor Mod. Changed
The motor selected in parameter 1-11 Motor Model is not
correct. Check the motor model.
WARNING 128, Enc. Inc/Abs Res
Mismatch between incremental and absolute encoder
channels.
WARNING/ALARM 157, Power Limit Mot.
The output power exceeds the value defined in
parameter 4-82 Power Limit Motor Mode.
WARNING/ALARM 158, Power Limit Gen.
The generating power exceeds the value defined in
parameter 4-83 Power Limit Generator Mode.
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 deactivated at 65% of the allowed 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 for more than 50 s
below the allowed minimum frequency
(parameter 1-98 ATEX ETR interpol. points freq.).
ALARM 166, ATEX ETR freq.lim.alarm
The frequency converter has operated for more than 60 s
(in a period of 600 s) below the allowed minimum
frequency (parameter 1-98 ATEX ETR interpol. points freq.).
Danfoss A/S © 10/2019 All rights reserved.
®
Encoder Input MCB 102 or VLT
Cycle power to the frequency converter to
determine if the warning/alarm returns.
®
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