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Operation
96
5.12 Log Menu (continued)
Menu
Description
Min
Max
Default Unit Reg. Type
PNU -
Log
Trip Log
Trip Code Descriptions
401
Motor Side Phase Loss
One or all of the phases are
missing on the motor side
during the instant of start up.
T1 T2 or T3 phase are missing
or at a very low level.
Check that the motor is
connected to T1 T2 and T3.
Ensure any disconnecting
device between the Unit and
the motor is closed at the
instant of start.
Read Only
PNU -
Log
Trip Log
Trip Code Descriptions
402-403
Motor Side Phase Loss
One or all of the phases are
missing on the motor side
during the instant of start up
when the motor being
controlled.
T1 T2 or T3 phase are missing
or at a very low level.
Check all incoming and
outgoing connections.
Read Only
PNU -
Log
Trip Log
Trip Code Descriptions
601
Control Voltage Too
Low
The internal control supply of
the Unit level has fallen to a
low level.
Can be caused by a weak
24Vdc control supply.
Ensure 24Vdc supply meets
the requirements specified in
the Quick Start Guide.
Read Only
PNU -
Log
Trip Log
Trip Code Descriptions
701-710
Sensing Fault Trip
One or more of the internal
control thyristors (SCRs) have
failed to turn on properly.
The Unit has detected that the
SCRs are not operating as
expected.
Check connections all
incoming and outgoing
connections.
Read Only
PNU -
Log
Trip Log
Trip Code Descriptions
801-802
Fan Problem
One or more of the internal
cooling fans has failed.
To ensure the heatsink is
cooled sufficiently the Unit will
trip if the fans fail to operate.
Check Unit fans for signs of
damage or contamination.
Read Only