WARNING/ALARM 12, Torque limit
The torque has exceeded the value in 4-16 Torque Limit
Motor Mode or the value in 4-17 Torque Limit Generator Mode.
14-25 Trip Delay at Torque Limit can change this warning from
a warning-only condition to a warning followed by an alarm.
Troubleshooting
If the motor torque limit is exceeded during ramp-
up, extend the ramp-up time.
If the generator torque limit is exceeded during
ramp-down, extend the ramp-down time.
If torque limit occurs while running, possibly
increase the torque limit. Make sure that the system
can operate safely at a higher torque.
Check the application for excessive current draw on
the motor.
WARNING/ALARM 13, Over current
The inverter peak current limit (approximately 200% of the
rated current) is exceeded. The warning lasts about 1.5 s,
then the adjustable frequency drive trips and issues an
alarm. Shock loading or quick acceleration with high inertia
loads can cause this fault. It can also appear after kinetic
backup if the acceleration during ramp-up is quick. If
extended mechanical brake control is selected, trip can be
reset externally.
Troubleshooting
Remove power and check if the motor shaft can be
turned.
Make sure that the motor size matches the
adjustable frequency drive.
Check parameters 1-20 to 1-25 for correct motor
data.
ALARM 14, Earth (ground) fault
There is current from the output phases to ground, either in
the cable between the adjustable frequency drive and the
motor or in the motor itself.
Troubleshooting
Remove power to the adjustable frequency drive
and repair the ground fault.
Check for ground faults in the motor by measuring
the resistance to ground of the motor leads and the
motor with a megohmmeter.
ALARM 15, Hardware mismatch
A fitted option is not operational with the present control
board hardware or software.
Record the value of the following parameters and contact
your Danfoss supplier:
15-40 FC Type
15-41 Power Section
15-42 Voltage
15-43 Software Version
15-45 Actual Typecode String
15-49 SW ID Control Card
15-50 SW ID Power Card
15-60 Option Mounted
15-61 Option SW Version (for each option slot)
ALARM 16, Short circuit
There is short-circuiting in the motor or motor wiring.
Remove power to the adjustable frequency drive and repair
the short circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the frequency converter.
The warning is only active when 8-04 Control Word Timeout
Function is NOT set to [0] Off.
If 8-04 Control Word Timeout Function is set to [5] Stop and
Trip, a warning appears and the frequency converter ramps
down until it stops then displays an alarm.
Troubleshooting
Check connections on the serial communication
cable.
Increase 8-03 Control Word Timeout Time
Check the operation of the communication
equipment.
Verify a proper installation based on EMC
requirements.
ALARM 18, Start failed
The speed has not been able to exceed 1-77 Compressor Start
Max Speed [RPM] during start within the allowed time. (set in
1-79 Compressor Start Max Time to Trip). This may be caused
by a blocked motor.
Diagnostics and Troubleshoo...
VLT
®
HVAC Drive Instruction Manual
44 MG11AJ22 - Rev. 2013-09-13
77
To Next Page
Loading...
Need help?
General