IM02602002E
www.eaton.com Page 12-3
MP-3000
Probable Cause Solution
GND FAULT GROUND FAULT ALARM Insulation failure—ground
current leakage
DANGER: Personnel hazard.
Stop and isolate the motor
as soon as possible to avoid
more dangerous or damaging
fault. Get expert evaluation of
the motor insulation condition.
%I2T I2T ALARM The thermal-model bucket
level has exceeded the alarm
setting (60% to 100% of trip
level).
Determine if the motor is
seeing larger than expected
sustained loading.
Check for an unbalance in
supply currents or voltages
causing negative sequence
heating.
Check for an abnormal
system voltage level.
Check for cooling air block-
age or abnormal ambient.
Monitor the bucket level in
Monitor mode to be sure
level does not continue to
rise to trip level.
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STEX A ALLOWED STARTS EXCEEDED,
WAIT IN MINUTES
All of the allowed count of
starts in the set time period
have been used.
In each case, the tempera-
ture is equal to or greater
than the alarm setting value.
Wait the number of minutes
shown on the display before
restarting.
Check the problem value in
the Monitor mode and deter-
mine the cause. Stator heat
may be due to overload, or
to cooling air ow blockage.
Bearing heat usually indicates
impending failure or lack of
lubrication.
WD TEMP STATOR WINDING
TEMPERATURE ALARM
MB TEMP MOTOR BEARING TEMPERATURE
ALARM
LB TEMP LOAD BEARING TEMPERATURE
ALARM
AX TEMP AUXILIARY OVER TEMPERATURE
ALARM
PH UNBAL
JAM
UNDER L
PHASE UNBALANCE ALARM
LOAD JAM ALARM
UNDER LOAD RUN ALARM
The electrical value has
crossed the alarm threshold.
For unbalance, check
source voltage balance,
single-phase external loads,
and uncleared unbalanced
faults.
For jam and underload, look
for mechanical failures in
driven process equipment.
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RTDF 3W
RTDF FIB
URTDF
FAILED RTD COMMUNICATION
-FIB- FIBER CHAN
-3W- THREE WIRE CHAN
FAILED URTD COMMUNICATION
(log display only)
RTD temperature information
reporting through designated
medium has been lost.
Check the wire or ber
channel medium for dam-
age or disconnection.
Check the URTD module for
power or malfunction.
•
•
RTF XX RTD CHANNEL FAILED ALARM
(xx = channel that failed)
A particular RTD or input to
the URTD has failed.
Troubleshoot the designated
RTD.
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