WARNING/ALARM 13, Overcurrent
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 fast acceleration with high-inertia
loads can cause this fault. If extended mechanical brake
control is selected, the 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, 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 from 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.
•
Perform current sensor test.
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
the local Danfoss supplier:
•
Parameter 15-40 FC Type
.
•
Parameter 15-41 Power Section
.
•
Parameter 15-42 Voltage
.
•
Parameter 15-43 Software Version
.
•
Parameter 15-45 Actual Typecode String
.
•
Parameter 15-49 SW ID Control Card
.
•
Parameter 15-50 SW ID Power Card
.
•
Parameter 15-60 Option Mounted
.
•
Parameter 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 from the adjustable frequency
drive and repair the short circuit.
WARNING/ALARM 17, Control word timeout
There is no communication to the adjustable frequency
drive.
The warning is only active when
parameter 8-04 Control
Word Timeout Function
is NOT set to
[0] Off
.
If
parameter 8-04 Control Word Timeout Function
is set to
[5]
Stop and trip
, a warning appears and the adjustable
frequency drive ramps down until it trips, then it displays
an alarm.
Troubleshooting
•
Check the connections on the serial communi-
cation cable.
•
Increase
parameter 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
parameter 1-77 Compressor Start Max Speed [RPM]
during
start within the allowed time (set in
parameter 1-79 Compressor Start Max Time to Trip
.) A
blocked motor may cause this alarm.
WARNING 23, Internal fan fault
The fan warning function is an extra protective function
that checks if the fan is running/mounted. The fan warning
can be disabled in
parameter 14-53 Fan Monitor
(
[0]
Disabled
).
For D, E and F enclosure sizes, the regulated voltage to the
fan is monitored.
Troubleshooting
•
Check fan resistance.
•
Check soft charge fuses.
WARNING 24, External fan fault
The fan warning function is an extra protective function
that checks if the fan is running/mounted. The fan warning
can be disabled in
parameter 14-53 Fan Monitor
(
[0]
Disabled
).
For D, E and F enclosure sizes, the regulated voltage to the
fan is monitored.
Troubleshooting
•
Check fan resistance.
•
Check soft charge fuses.
WARNING 25, Brake resistor short circuit
The brake resistor is monitored during operation. If a short
circuit occurs, the brake function is disabled and the
warning appears. The adjustable frequency drive is still
operational but without the brake function. Remove power
from the adjustable frequency drive and replace the brake
resistor (see
parameter 2-15 Brake Check
).
Warnings and Alarms
VLT
®
HVAC Drive FC 102
128
Danfoss A/S © 08/2014 All rights reserved.
MG11F522
8
8
Summary of Contents for VLT HVAC Drive FC 102
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