Magnetek Elevator Quattro DC, Technical Manual

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Quattro DC Troubleshooting
112
Name Description
Possible Causes & Corrective Action
LS Overvolt
The line side power converter
has detected an over-voltage
condition.
Line Converter Problem
 Verify the line converter did not shutdown
while the motor controller was in process of
regeneration
Check Parameter Settings
 Bad tuning of the line side regulators
Contactor Problem
 Verify motor contactor did not open while
motoring
Result of a fault on the motor side of the drive
 Look in the fault history for other events that
occurred at the same approximate time.
LS PCU Data
PCU parameters checksum is
invalid on the line side. Parameters Corrupted
 Check & re-enter Line Side parameters and
power cycle the drive
LS Phase
The line side converter has
detected the loss of one or
more phases of the AC line.
Input Line to Line Phase Loss
 Verify all 3 AC line phases are present
 Check line fuses
 Verify INPUT L-L VOLTS (A5) is set correctly
 Verify wiring to / from contactor UTM
 Verify 3 phase signal wiring to PCB A8
 If re-occurs, replace A8
LS Size
The line side power converter
has detected that the power
bridge size and cube I.D. size
does not match.
Hardware Mismatch
 Size of the power bridge does not match the
rating as defined on the cube ID board. Call
tech support to verify the proper locations for
the jumpers on the gating boards.
 Check for correct Cube ID board located on
A3 product interface board, verify by looking
up motor side cube I.D. in the U6 menu, and
then ensure it matches the table in this
manual.
LS SW BUS OV
The line side power converter
has detected an over-voltage
condition above setting SW
BUS OV LEVEL (A5)
Line Converter Problem
 Verify the line converter did not shutdown
while the motor controller was in process of
regeneration
Check Parameter Settings
 Verify setting of SW BUS OV LEVEL (A5)
 Bad tuning of the line side regulators
Contactor Problem
 Verify motor contactor did not open while
motoring