ABB M10 Series User Manual

Condition Description Possible Cause Suggested Action
DIx Alarm Motor is about to stop if the DIx
changes status from healthy to
unhealthy during running ;
Motor is prevented from starting
if the DIx input is unhealthy.
The process interlock1 switch
remain inactive on the occurrence
of a motor start or the process
interlock2 switch remain active
when motor is in running.
Check DI settings on process
interlock.
Check DIx wirings
Watchdog Alarm Internal hardware watchdog
activated
Hardware fault or internal pro-
gram running fault (if it is a tem-
porary fault, it is recoverable after
power cycling ).
Check if it is recoverable (by cycling
the power)
Change hardware if it is not
recoverable
No Comm The communication between MDx
display and M10x main unit is
interrupted or M10x simply stops
functioning.
Physical connection is damaged
between MDx display and M10x.
M10x is no longer in working
mode.
Check if the cable connection is in
good condition; Check if MDx or
M10x relay is in working condition
(by swapping with spares)
TOL Trip Motor is stopped.
The motor thermal level reaches
thermal capacity trip level
The motor is under thermal
overload condition. Unacceptable
heating-up of motor windings.
Check the process conditions:>
If it is extreme starting
conditions, high overload
or intermittent operation.
Check the motor condition:> Cooling
problem, ambient temperature
too high; mechanical problem;
Check the thermal model relevant
parameters:> Check the Ie setting,
T6 time and ambient temperature
setting, the thermal level setting
etc.
Stalled rotor Trip Motor is stopped.
The highest of the measured
phase currents remains above the
trip level for a trip delay time
The driven mechanical system
from jams and excessive
overloads
Check parameter settings.
Check motor connected load and
process condition.
Phase Failure Trip Motor is stopped.
the ratio between the lowest
phase current to the highest
phase current (ILMIN / ILMAX)
from the measured currents of
all three phases is below the trip
level
Phase failure in motor phase
currents generally occurs because
of pitted contacts in the contactor
or SCPD, imbalance in the mains
supply, loose connections, blown
fuse, and faults within the motor.
Check for blown fuse
Check for pitted contacts in
contactor or SCPD
Check for loose connection
on power supply
Check the motor connection
Phase unbalance Trip Motor is stopped.
the ratio between the lowest
phase current to the highest
phase current (ILMIN / ILMAX)
from the measured currents
of all three phases is below the
trip level.
Phase failure in motor phase
currents generally occurs because
of pitted contacts in the contactor
or SCPD, imbalance in the mains
supply, loose connections, blown
fuse, and faults within the motor.
Check for blown fuse
Check for pitted contacts in
contactor or SCPD
Check for loose connection
on power supply
Check the motor connection
Underload Trip Motor is stopped.The highest
of the measured phase currents
is below the trip level.
Motor current is below the alarm
setting; motor running idle, dry
running pump, conveyor belt bro-
ken; fan with no air flow
Check motor load and motor /
process conditions.
Check parameter settings.
Noload Trip Motor is stopped.
The highest of the measured
phase currents is below the trip
level.
Motor current is below the alarm
setting; motor running idle, dry
running pump, conveyor belt
broken; fan with no air flow
Check motor load and motor
process conditions.
Check parameter settings.
Earth fault Trip Motor is stopped.
Residual current for cable(s),
motor and connection box above
trip level.
Insulation problems for cable(s),
motor and connection box or
reduced insulation strength due
to extreme ambient conditions.
Consider whether starpoint of IT-
networks may have moved.
Check parameter settings.
Check Earthing system.
Check motor or connected load.
PTC Trip * Motor is stopped.
The resistance corresponding to
the high temperature at one or
more of the thermistors exceeds
trip level
Excessive temperature rise in the
windings
Check parameter settings.
Check PTC input
Check motor
1 2 . FAU LT M E SS AG E S A N D TR O U B L ESH O OT 93

ABB M10 Series Specifications

General

Brand	ABB
Model	M10 Series
Category	Controller
Language	English