Danfoss VLT AutomationDrive FC 302 Programming Manual page 223

Troubleshooting
Increase the ambient temperature of the unit. Also, a
trickle amount of current can be supplied to the frequency
converter whenever the motor is stopped by setting
2-00 DC Hold/Preheat Current at 5% and 1-80 Function at
Stop
ALARM 67, Option module configuration has changed
One or more options have either been added or removed
since the last power-down. Check that the configuration
change is intentional and reset the unit.
ALARM 68, Safe Stop activated
Safe Torque Off has been activated. To resume normal
operation, apply 24 V DC to terminal 37, then send a reset
signal (via bus, digital I/O, or by pressing [Reset]).
ALARM 69, Power card temperature
The temperature sensor on the power card is either too
hot or too cold.
Troubleshooting
•
Check that the ambient operating temperature is
within limits.
•
Check for clogged filters.
•
Check fan operation.
•
Check the power card.
ALARM 70, Illegal FC configuration
The control card and power card are incompatible. To
check compatibility, contact the Danfoss supplier with the
type code of the unit from the nameplate and the part
numbers of the cards.
ALARM 71, PTC 1 safe stop
Safe Torque Off has been activated from the PTC
Thermistor Card MCB 112 (motor too warm). Normal
operation can be resumed when the MCB 112 applies 24 V
DC to Terminal 37 again (when the motor temperature
reaches an acceptable level) and when the Digital Input
from the MCB 112 is deactivated. When that happens, a
reset signal must be is be sent (via Bus, Digital I/O, or by
pressing [Reset]).
ALARM 72, Dangerous failure
Safe Torque Off with trip lock. An unexpected combination
of Safe Torque Off commands has occurred:
•
MCB 112 VLT PTC Thermistor Card enables
X44/10, but safe stop is not enabled.
•
MCB 112 is the only device using Safe Torque Off
(specified through selection [4] or [5] in
parameter 5-19 Terminal 37 Safe Stop), Safe Torque
Off is activated, and X44/10 is not activated.
WARNING 73, Safe Stop auto restart
Safe stopped. With automatic restart enabled, the motor
could start when the fault is cleared.
ALARM 74, PTC Thermistor
Alarm related to the ATEX option. The PTC is not working.
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VLT AutomationDrive FC 301/302 Programming Guide
ALARM 75, Illegal profile sel.
Parameter value must not be written while motor is
running. Stop motor before writing MCO profile to
parameter 8-10 Control Word Profile for instance.
WARNING 76, Power unit setup
The required number of power units does not match the
detected number of active power units.
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 set point value and actual value
has exceeded the value in parameter 4-35 Tracking Error.
Disable the function by parameter 4-34 Tracking Error
Function or select an alarm/warning also in
parameter 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
parameter 4-30 Motor Feedback Loss Function. Adjust
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 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.
parameter 14-89 Option Detection is set to [0] Frozen config-
uration and the option layout has been changed.
•
•
WARNING 89, Mechanical brake sliding
The hoist brake monitor has detected a motor speed > 10
RPM.
MG33MI02 - Rev. 2013-11-20
To apply the change, enable option layout
changes in parameter 14-89 Option Detection.
Alternatively, restore the correct option configu-
ration.
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