CG emotron TSA Series, Instruction Manual

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CG Drives & Automation 01-5980-01r2 Troubleshooting, Diagnoses and Maintenance 151
Mot termOpen
(motor terminal
open)
Hard trip
Open motor contact, cable or
motor winding.
Thyristor shorted
Bypass contactor welded contacts
Check wiring between softstarter and motor.
Initiate a restart. If the alarm appears again, contact your
local Emotron TSA supplier.
M Phase loss
2 or 3 phases lost in mains supply
voltage.
Check fuses and mains supply.
Over temp Hard trip
Heatsink temperature too high:
Too high ambient temperature of
the softstarter.
Insufficient cooling.
Too high current.
Blocked or stuffed fans.
Check the cooling of the softstarter cabinet.
Check the functionality of the built-in fans (No Fan in
Frame size 1). The fans must switch on automatically if the
heatsink temperature gets too high. At power up the fans
are briefly switched on.
Check softstarter and motor rating.
Clean fans.
Over voltage
No action
Hard trip
Soft trip
Warning
4321
Too high 3-phase mains supply
voltage.
Check the 3-phase main supply voltage.
Remove the interference cause or
use other main supply
lines.
Phase loss
No action
Hard trip
Soft trip
Warning
235
Single phase loss.
Fuse broken.
Check fuses and mains supply.
Check that terminal screws are tightened.
Phase rev
No action
Hard trip
Soft trip
Warning
4341
Incorrect phase sequence on 3-
phase main supply. Swap L2 and L3 input phases.
Check setting of menu [4342] Allowed Sequence.
Predictive I
2
t Warning
New start not possible due to
motor temperature is too high.
Start is inhibited until motor has cooled down.
PT100
No action
Hard trip
Soft trip
Warning
2321
Motor PT100 elements exceeds
maximum level.
Self-cooled motor at low speed,
too high load.
NOTE: Only valid if option board
PTC/PT100 is used.
Check on mechanical overload on the motor or the
machinery (bearings, gearboxes, chains, belts, etc.).
Check the motor cooling system.
Set alarm action to “Off”.
PTC
No action
Hard trip
Soft trip
Warning
2331
Motor thermistor (PTC) exceeds
maximum level.
Self-cooled motor at low speed,
too high load.
If motor overheated, wait for it to cool down. Check on
mechanical overload on the motor or the machinery
(bearings, gearboxes, chains, belts, etc.)
Check the motor cooling system.
Set alarm action to “No action”.
Start limit
No action
Hard trip
Soft trip
Warning
2341
Number of starts per hour
exceeded, min time between
starts not kept.
Wait and start again.
Perhaps the number of starts per hour could be decreased
or the number of allowed starts per hour could be
increased in menu [2342] or the min time between starts
could be increased (menu [2343]).
Stop first!
During start, stop and jog,
changing certain parameters is
not permitted.
Set parameters during standstill.
Under voltage
No action
Hard trip
Soft trip
Warning
4331
Too low 3-phase mains supply
voltage.
Mains voltage dip due to starting
other major power consuming
machines on the same line.
Make sure all three phases are properly connected and
that the terminal screws are tightened.
Check that the 3-phase mains supply voltage is within the
limits set in menu group [433].
Use other mains supply lines if dip is caused by other
machinery.
Table 40 Alarms with possible causes and remedies.
Trip/warning
message
(and indicator)
Alarm Action
/Menu
Possible cause Remedy