11
AT.654254.050 ver.1.0
Troubleshooting manual
№
Potential problem/Message
on the controller display
Probable causes
of message displaying
Remedies
Malfunction of the controller
UMKA07
Replace the controller
6
Alarm «Door» is displayed
«
Open door
»
signal comes
Close all VSD doors with a loose
closure; adjust the locks for a
snug fit of the doors to the VSD
itself
Replace the faulty door open
sensor, restore the door open
control circuit
Malfunction of the UMKA07 con-
troller
Replace the controller with a
working one
7
Alarm «Press gauge» is dis-
played
«contact pressure gauge» signal
comes
Ensure the absence of a signal
from the contact pressure
gauge; check the integrity of the
wires from the sensor to the con-
trol system
Correctly connect the contact
pressure gauge to the control
system; correctly configure the
«Press gauge»
Malfunction of the UMKA07 con-
troller
Replace the controller with a
working one
8
Alarm
«
U,V,W phase power
s
witch» is displayed
The inverter module or driver in
this phase is defective in the cor-
responding phase
Diagnosis occurs by alternating
phase loops. If the field of loop
alternations did not pass the er-
ror, then the control system is
faulty, if it does, the problem may
be in the module driver or in the
module. Replace driver and mod-
ule together. If the module fails,
it most likely damaged the driver
Defective Electronics panel
Diagnosis occurs by alternating
phase loops. If, after the loop al-
ternations, the error did not
transfer, then the control system
is faulty. If the switch has
passed, there may be a problem
in the module driver or in the
module. Replace the electronics
panel assembly
Faulty cable connecting the elec-
tronics panel and the driver
Replace with a working cable
9
Alarm
«Overcurrent p.U,V,W» is
displayed
Faulty current sensor or MDN or
MDS3
Diagnosis occurs by alternating
phase loops. If, after the loop al-
ternations, the error did not
switch, then the control system
is faulty, if the problem has
passed in the current sensor or
in the MDN or 3MDS blocks, re-
place the current sensor if it is
one, or all of them in this phase.
If the alarm does not go away re-
place the MDN or 3MDS blocks
Defective Electronics panel
Diagnosis occurs by alternating
phase loops. If, after the loop al-
ternations, the error did not
transfer, then the control system
is faulty. If the switch has
Содержание AK06
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