BENSHAW M2L 3000, Руководство пользователя

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M2L 3000 Series VFD
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Table 22: Fault Conditions
Fault
Code
Fault Displayed
Reaction
Type
Description Course of Action
618
Transformer Digital
Input fault
C,S
Occurs when one of the digital inputs is
programmed as “Transformer Fault
High”, and 120 VAC is applied to that
digital input on the Remote IO.
Occurs when one of the digital inputs is
programmed as “Transformer Fault
Low”, and 120 VAC is removed from
that digital input on the Remote IO.
It is intended for a digital input to be
programmed as a “Transformer Fault” input,
and connected protective devices such as
temperature or oil pressure switches when a
front end transformer is supplied separately
from the drive. If this is the case, determine if
those protective devices have tripped.
If the protective devices are failsafe (normally
closed type switches) and the input is
programmed as “Transformer Fault Low”,
verify that 120 VAC is being supplied to
those switches. If not, check the input fuse
and output fuse of the 120 VAC control
power transformer (T3).
Verify that no other digital inputs are
programmed as “Transformer Fault High” or
“Transformer Fault Low”.
Verify that all fans for the transformer cabinet
are working. Check and replace fuses as
necessary.
Verify that the filters for the transformer
cabinet are not clogged. Clean as necessary.
619
Main Contactor
Feedback fault
C,S
Occurs when feedback from the main
DC bus contactor in the inverter
section of the drive does not follow the
command to the coil of that contactor.
Either the main contactor is supposed
to be open, and the feedback indicates
that it is closed, or, the main contactor
is supposed to be closed, and the
feedback indicates that it is open.
This could be caused by the main contactor
pickup ice-cube relay (M1) not being seated
well in its socket. Verify that it’s seated and
that its lamp indicator lights momentarily
when the drive completes its precharge.
This could be caused by a lack of 24 VDC.
Check that the “DC ON” led on the 24 VDC
power supply is on. If not, check and replace
the fuse supplying its input power if
necessary.
This could be caused by digital inputs on the
Remote IO other than Digital Input 3 being
programmed as a “Main Contactor
Feedback” input. Check settings for
Digital
Input #4 Function (IO-03) through Digital
Input #8 Function (IO-07) and verify that
none are set to “Main Contactor Feedback”.