Specifications

ALARM 56, AMA interrupted by user
The user has interrupted the AMA.
ALARM 57, AMA internal fault
Try to restart AMA again. Repeated restarts may over heat
the motor.
ALARM 58, AMA internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in F-43 Current Limit.
Ensure that motor data in parameters 1-20 through 1-25
are set correctly. Increase the current limit, if necessary. Be
sure that the system can operate safely at a higher limit.
WARNING 60, External interlock
A digital input signal indicates a fault condition external to
the frequency converter. An external interlock has
commanded the frequency converter to trip. Clear the
external fault condition. To resume normal operation,
apply 24 V DC to the terminal programmed for external
interlock. Reset the frequency converter.
WARNING 62, Output frequency at maximum limit
The output frequency has reached the value set in
F-03 Max Output Frequency 1. Check the application to
determine the cause. Possibly increase the output
frequency limit. Be sure the system can operate safely at a
higher output frequency. The warning clears when the
output drops below the maximum limit.
WARNING/ALARM 65, Control card over temperature
The cutout temperature of the control card is 80 °C.
Troubleshooting
•
Check that the ambient operating temperature is
within limits
•
Check for clogged filters
•
Check fan operation
•
Check the control card
WARNING 66, Heatsink temperature low
The frequency converter is too cold to operate. This
warning is based on the temperature sensor in the IGBT
module.
Increase the ambient temperature of the unit. A trickle
amount of current can be supplied to the frequency
converter whenever the motor is stopped by setting
B-00 DC Hold Current at 5% and H-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
Loss of the 24 V DC signal on terminal 37 has caused the
unit to trip. To resume normal operation, apply 24 V DC to
terminal 37 and reset the unit.
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 frequency converter configuration
The control card and power card are incompatible. Contact
the supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 71, PTC 1 safe torque off
Safe torque off has been activated from the MCB 112 PTC
thermistor card (motor too warm). Normal operation can
resume when the MCB 112 applies 24 V DC to T-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 is sent (via
Bus, Digital I/O, or by pressing [RESET]).
ALARM 72, Dangerous failure
Safe torque off with trip lock. The dangerous failure alarm
is issued if the combination of safe torque off commands
is unexpected. This occurs if the MCB 112 VLT PTC
Thermistor Card enables X44/10 but safe torque off is not
enabled. Furthermore, if the MCB 112 is the only device
using safe torque off (specified through selection [4] or [5]
in 5-19 Terminal 37 Safe Stop), an unexpected combination
is activation of safe torque off without the X44/10 being
activated. Table 8.26 summarizes the unexpected
combinations that lead to Alarm 72. Note that if X44/10 is
activated in selection 2 or 3, this signal is ignored.
However, the MCB 112 is still able to activate safe torque
off.
ALARM 80, Drive initialised to default value
Parameter settings are initialised to default settings after a
manual reset. Reset the unit to clear the alarm.
ALARM 92, No flow
A no-flow condition has occurred. AP-23 No-Flow Function
is set for alarm. Troubleshoot the system and reset the
frequency converter after the fault has been cleared.
ALARM 93, Dry pump
A no-flow condition in the system with the frequency
converter operating at high speed may indicate a dry
pump. AP-26 Dry Pump Function is set for alarm.
Troubleshoot the system and reset the frequency converter
after clearing the fault.
ALARM 94, End of curve
Feedback is lower than the set point. This may indicate
leakage in the system. AP-50 End of Curve Function is set
for alarm. Troubleshoot the system and reset the frequency
converter after the fault has been cleared.
General Specifications and ... VLT® HVAC Drive FC 102 Design Guide
210 MG16C102 - Rev. 2013-08-20
8
8