BENSHAW M2L 3000, User Manual

Page: 118 / 140

M2L 3000 Series VFD
118
Table 22: Fault Conditions
Fault
Code
Fault Displayed
Reaction
Type
Description Course of Action
706
Cell IGBT
Temperature fault
D
Occurs when any cell’s IGBT
temperature reaches 70 °C or 0 °C.
Verify that all fans for the inverter cabinet are
working. Check and replace fuses as
necessary. If one of the fan fuses is blown or
the fan is otherwise inooerable, that fan will
rotate backwards due to the air flow being
forced across the blades.
Verify that the filters for the inverter cabinet
are not clogged. Clean as necessary.
If cooling fans are 3 phase, verify that all 3
fans are rotating counter-clockwise.
707
Cell Board
Temperature fault
D
Occurs when any cell’s control board
temperature reaches 70 °C or 0 °C.
Verify that all fans for the inverter cabinet are
working. Check and replace fuses as
necessary. If one of the fan fuses is blown or
the fan is otherwise inoperable, that fan will
rotate backwards due to the air flow being
forced across the blades.
Verify that the filters for the inverter cabinet
are not clogged. Clean as necessary.
If cooling fans are 3 phase, verify that all 3
fans are rotating in same direction.
714 Input Disconnect Open C,S
Occurs when one of the digital inputs
Digital Input #4 Function through
Inverter Digital In #8 or CCI Digital In
#8 is programmed as “Input
Disconnect Feedback” and 120VAC is
removed from that digital input on the
reader I/O.
It is intended for a normally open auxialiary
contact on an input disconnect switch to be
monitored by a digital input programmed as
an “Input Disconnect Feedback” input.
Determine if that auxiliary contact has
opened or malfunctioned.
Verify that 120VAC is being supplied to that
auxiliary contact.
Verify that no other inputs are programmed
as “Input Disconnect Feedback”.
715
Output Disconnect
Open
C,S
Occurs when one of the digital inputs
Digital Input #4 Function through
Inverter Digital In #8 or CCI Digital In
#8 is programmed as “Output
Disconnect Feedback” and 120VAC is
removed from that digital input on the
reader I/O.
It is intended for a normally open auxialiary
contact on an output disconnect switch to be
monitored by a digital input programmed as
an “Output Disconnect Feedback” input.
Determine if that auxiliary contact has
opened or malfunctioned.
Verify that 120VAC is being supplied to that
auxiliary contact.
Verify that no other inputs are programmed
as “Output Disconnect Feedback”.