Eaton Cutler-Hammer MP-3000 - Page 122

Page 122 I.L. 17562
PR 0.3 Effective 8/99
• Clearly mark the new
wiring and update the
drawings for future
reference.
• Check motor for
correct direction of
rotation at the moment
of starting.
T BYPASS TRIP BYPASS The MP-3000 tripped, yet
continued to see current
flowing to the motor for
more than a second after
the trip.
• The contactor or
breaker is stuck or
jammed.
• Or, someone has
bypassed the trip contact
so that the contactor
remained energized
after the trip.
• Immediately open
upstream source breaker
or loadbreak switch.
Lock out this switch and
diagnose problem or find
bypass in starter.
INCOM INCOM REMOTE TRIP A remote PowerNet or other
data communications host
requested a motor trip.
Determine the cause of
the remote trip.
STEX MMM
STEX T
MAX NUMBER OF
STARTS PER TIME
REACHED,
REMAINING MINUTES
ACTIVE SHOWN
STARTS PER TIME
TRIP (log display only)
Too many starts were
performed in the user-set
period of time.
Wait for the oldest start
to clear from the stack.
Observe countdown on
display. See setpoints
P5L1 and P5L2.
TBS MMM TIME BETWEEN
STARTS TRIP,
REMAINING MINUTES
ACTIVE SHOWN
Restarting blocked until
user-set time between starts
has expired.
Wait the indicated time
before restarting.
Note: The number of
cold starts (NOCS)
setpoint may suppress
this blocking during the
first n cold starts.
TRANSIT LOW TO HIGH
VOLTAGE
TRANSITION ERROR
TRIP
Starting current was still
above the transition
threshold P5L5 when the
transition timer P5L6 delay
expired.
• This trip is initiated
only if setpoint P5L7 is
set to TRN I or TRN
T/C. Check the
correctness of transition
settings.
• Check motor and load
for a cause of slower
than expected
acceleration.