12
AT.654254.050 ver.1.0
Troubleshooting manual
№
Potential problem/Message
on the controller display
Probable causes
of message displaying
Remedies
passed, there may be a problem
in the module driver or in the
module. Replace the electronics
panel assembly
The adjusted numbers and rated
current of the VSD are entered in-
correctly
Restore factory default rates and
verify their correspondence to
the set rated power of the VSD
(you may need to contact a Triol
service for assistance)
10 Alarm
«T° power switch U,V,W»
is displayed
Defective temperature sensor,
driver board, or electronics panel
Diagnosis occurs by alternating
phase loops. If after loop alterna-
tions error did not pass, then the
control system is faulty, if the
switch has passed, there may be
a problem in the temperature
sensor or in the MDN or 3MDS
units. Replace temperature sen-
sor and MDN or 3MDS units or
electronics panel
Overheating protection activation
setpoint «T ° power switch U, V,
W» set incorrectly
Restore factory default rates and
verify their correspondence to
the set rated power of the VSD
(you may need to contact a Triol
service for assistance)
Cooling fan defective
Check the operation of the fan, if
not working, replace it with a
working one
11 Alarm
«T° digital sensor» is dis-
played
Faulty temperature sensor, elec-
tronics panel
Diagnosis of the sensor is car-
ried out using a tester. If, at a ra-
diator temperature below 70 de-
grees Celsius and the sensor is
in the open state, the sensor is
faulty. Replace sensor. If the
sensor is faulty and an alarm is
issued, replace the electronics
panel
The cooling fan is defective or
the radiator is clogged
Check the operation of the fan, re-
place it if faulty.
Clean the VSD radiators from
dust and dirt
12 Alarm
«
Phase failure 1,2,3,4
grid» is
displayed
There is no power on one of the
networks or one of the power
switches is turned off
Supply power to all networks.
Check that all power circuit
breakers are fully turned on and
there is power on all phases
There is no contact in the con-
nectors of the rectifier unit, or on
the electronics panel
Restore the connection of the
connectors according to the
electrical diagram, check their re-
liable fixation
13
Alarm «Time
-out charge DC
»
is
displayed
Defective charge unit or power
unit
When a signal is applied to the
charge of a link, there is no
charge, the voltage across the
capacitors does not increase.
Replace charge circuits consist-
ing of charging resistors and
starter or BVN unit
Defective electronic panel
When charging, the voltage rises
but the controller does not meas-
ure this voltage.
