Danfoss VLT FC Series, Руководство по обслуживанию

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Record the value of the following parameters and contact
Danfoss.
•
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 .
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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).
There is short-circuiting in the motor or motor wiring.
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
ALARM 16, Short circuit
Troubleshooting
•
Remove the power to the drive and repair the
short circuit.
•
Check that the drive contains the correct current
scaling card and the correct number of current
scaling cards for the system.
WARNING/ALARM 17, Control word timeout
There is no communication to the drive.
The warning is only active when
parameter 8-04 Control
Timeout Function is NOT set to [0] Off .
If parameter 8-04 Control Timeout Function is set to [5] Stop
and trip , a warning appears, and the drive ramps down to
a stop and shows an alarm.
Troubleshooting
•
Check the connections on the serial communi-
cation cable.
•
Increase parameter 8-03 Control Timeout Time .
•
Check the operation of the communication
equipment.
•
Verify that proper EMC installation was
performed.
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 that was set in
parameter 1-79 Compressor Start Max Time to Trip . A
blocked motor can cause this alarm.
WARNING/ALARM 19, Discharge temperature high
The warning indicates that the discharge temperature
exceeds the level programmed in
parameter 28-24 Warning
Level . If so programmed in parameter 28-25 Warning Action ,
the drive lowers the speed of the compressor in an
attempt to lower the discharge temperature.
The alarm indicates that the discharge temperature
exceeds the level programmed in
parameter 28-26 Emergency Level .
WARNING/ALARM 20, Temp. input error
The temperature sensor is not connected.
WARNING/ALARM 21, Parameter error
The parameter is out of range. The parameter number is
shown in the display.
Troubleshooting
•
Set the affected parameter to a valid value.
WARNING 22, Hoist mechanical brake
0 = The torque reference was not reached before timeout.
1 = There was no brake feedback before the timeout.
WARNING 23, Internal fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in
parameter 14-53 Fan Monitor ( [0] Disabled ).
There is a feedback sensor mounted in the fan. If the fan is
commanded to run and there is no feedback from the
sensor, this alarm appears. This alarm also shows if there is
a communication error between the fan power card and
the control card.
Check the alarm log for the report value associated with
this warning.
If the report value is 2, there is a hardware problem with 1
of the fans. If the report value is 12, there is a communi-
cation problem between the fan power card and the
control card.
Fan troubleshooting
•
Cycle power to the drive and check that the fan
operates briefly at start-up.
•
Check for proper fan operation. Use parameter
group 43-** Unit Readouts to show the speed of
each fan.
Fan power card troubleshooting
•
Check the wiring between the fan power card
and the control card.
•
Fan power card may need to be replaced.
•
Control card may need to be replaced.
WARNING 24, External fan fault
The fan warning function is a protective function that
checks if the fan is running/mounted. The fan warning can
be disabled in
parameter 14-53 Fan Monitor ( [0] Disabled ).
A feedback sensor is mounted in the fan. If the fan is
commanded to run and there is no feedback from the
sensor, this alarm appears. This alarm also shows if there is
Troubleshooting
VLT
®
FC Series, D1h–D8h, Da2/Db2/Da4/Db4, E1h–E4h, J8/J9
70 Danfoss A/S © 02/2019 All rights reserved. MG94A502
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