Magnetek Elevator Quattro DC - Page 122

Quattro DC Troubleshooting
120
Name Description
Possible Causes & Corrective Action
Undervolt Flt
The L-L AC voltage has fallen
below the under voltage alarm
level. The alarm level is set by
UV Alarm Level parameter.
Low Input Voltage
 Check INPUT L-L VOLTS (A5) and UV
ALARM LEVEL (A4)
 Verify proper input voltage and increase, if
necessary, the input AC voltage within the
proper range
 Check for missing input phase
 Check power line disturbances due to starting
of other equipment
Drive Accurately Reading the L-L AC Voltage
 Measure the AC line volts with a meter
 Compare that with the value on the digital
operator, Vab (D3) or Vca (D3)
Util Data Sum
The line side calculated
checksum is not the same as
the stored checksum
Hardware Failure
 Cycle power to the Drive
 If re-occurs, replace line side main control
board (A1)
Utility Temp
(fault)
One or more of the IGBT
modules on the line side power
bridge has exceeded 95C
(203F).
Overtemperature Problems
 Verify that the two fans located under the
power module are both working properly
 Inspect and clean air intake filters
 Verify ambient temperature is less than 45C
 Verify drive is sized correctly
 Possible defective temperature sensor
Hardware problem
 Replace the motor side product interface
board (A4)

Utility Temp
(alarm)
One or more of the IGBT
modules on the line side power
bridge has exceeded 85C
(185F).
Overtemperature Problems
 Verify that the two fans located under the
power module are both working properly
 Inspect and clean air intake filters
 Verify ambient temperature is less than 45C
 Verify drive is sized correctly
 Possible defective temperature sensor
Hardware problem
 Replace the motor side product interface
board (A4)
UV Alarm
(alarm)
The L-L AC voltage has fallen
below the under voltage alarm
level. The alarm level is set by
UV Alarm Level parameter.
Low Input Voltage
 Check INPUT L-L VOLTS (A5) and UV
ALARM LEVEL (A4)
 Verify proper input voltage and increase, if
necessary, the input AC voltage within the
proper range
 Check for missing input phase
 Check power line disturbances due to starting
of other equipment
Drive Accurately Reading the AC line volts
 Measure the AC line volts with a meter
 Compare that with the value on the digital
operator, Vab (D3) or Vca (D3)