Danfoss VLT FC 102 User Manual page 48

Maintenance, Diagnostics, a...
Troubleshooting
•
Confirm that the drive module and its power card
have the correct part number.
•
Ensure that the 44-pin cables between the MDCIC
and power cards are mounted correctly.
WARNING 77, Reduced power mode
This warning indicates that the drive system is operating in
reduced power mode (that is, operating with less than the
allowed number of inverter sections). This warning is
generated on power cycle when the drive system is set to
run with fewer inverters and then remains on.
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
6 6
not be installed.
ALARM 80, Drive initialised to default value
Parameter settings are initialized 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 initialize a parameter.
ALARM 85, Dang fail PB
PROFIBUS/PROFIsafe error.
ALARM 91, Analog input 54 wrong settings
Set switch S202 in position OFF (voltage input) when a
KTY sensor is connected to analog input terminal 54.
WARNING 98, Clock fault
Time is not set or the RTC clock has failed.
Troubleshooting
•
Reset the clock in parameter 0-70 Date and Time.
ALARM 243, Brake IGBT
This alarm is only for multi-drive systems. It is equivalent to
alarm 27, Brake chopper fault. The report value in the alarm
log indicates which drive module generated the alarm. This
IGBT fault can be caused by any of the following:
•
The DC fuse is blown.
•
The brake jumper is not in position.
•
The Klixon switch opened due to an overtem-
perature condition in the brake resistor.
The report value in the alarm log indicates which drive
module generated the alarm:
1 = Left drive module.
2 = Second drive module from left.
3 = Third drive module from left (in 4-module
module systems).
4 = Fourth drive module from left (in 4-module
module systems).
46
®
VLT Parallel Drive Modules
ALARM 244, Heat sink temperature
The maximum temperature of the heat sink has been
exceeded. The temperature fault cannot reset until the
temperature drops below a defined heat sink temperature.
The trip and reset points are different based on the drive
system power size. This alarm is equivalent to alarm 29,
Heat sink temp. The report value in the alarm log indicates
which drive module generated the alarm:
Troubleshooting
Check for the following conditions:
•
•
•
•
•
•
ALARM 245, Heat sink sensor
No feedback from the heat sink temperature sensor. The
signal from the IGBT thermal sensor is not available on the
power card. This alarm is equivalent to alarm 39, Heat sink
sensor. The report value in the alarm log indicates which
drive module generated the alarm:
Troubleshooting
Check the following:
•
•
•
ALARM 246, Power card supply
This alarm is only for multi-drive systems. It is equivalent to
alarm 46, Power card supply. The report value in the alarm
log indicates which drive module generated the alarm:
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1 = Left drive module.
2 = Second drive module from left.
3 = Third drive module from left (in 4-drive
module systems).
4 = Fourth drive module from left (in 4-drive
module systems).
Ambient temperature too high.
Motor cables too long.
Incorrect airflow clearance above or below the
drive system.
Blocked airflow around the unit.
Damaged heat sink fan.
Dirty heat sink.
1 = Left drive module.
2 = Second drive module from left.
3 = Third drive module from left (in 4-module
module systems).
4 = Fourth drive module from left (in 4-module
module systems).
Power card.
Gatedrive card.
Ribbon cable between the power card and the
gatedrive card.
1 = Left drive module.
2 = Second drive module from left.
MG37L202