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3
The drive motor's spee
The drive motor's speed gradually drops.
d gradually drops.
(High drive regulator temperature)
(High drive regulator temperature)
4. Look for the break/short circuit in
4. Look for the break/short circuit in
the cables between the drive regulator
the cables between the drive regulator
and the drive motor M1.2 - E2.22 and
and the drive motor M1.2 - E2.22 and
M1.3 - E1.11 and between M1.3 and
M1.3 - E1.11 and between M1.3 and
M1.4. Both connectors are pulled out
M1.4. Both connectors are pulled out
of their connections on the motor and
of their connections on the motor and
drive regulator.
drive regulator.
5. Is the voltage between the drive
5. Is the voltage between the drive
regulator contact points E1 K1.3 and
regulator contact points E1 K1.3 and
E1 K1.4 approx. 12V?
E1 K1.4 approx. 12V?
Y
Yes
es
Check that there
Check that there is not
is not a
a short circuit
short circuit
in the cables between the motor contact
in the cables between the motor contact
M1 and the drive regulator contact,
M1 and the drive regulator contact,
both connectors are pulled out of their
both connectors are pulled out of their
connections. Measure between M1.2 -
connections. Measure between M1.2 -
E1 M1.3 and between M1.1 and M1.2.
E1 M1.3 and between M1.1 and M1.2.
No
No
6. Switch the regulators. Note that in
6. Switch the regulators. Note that in
most cases the drive and pump
most cases the drive and pump
regulators can be switched with each
regulators can be switched with each
other for test purposes. First check that
other for test purposes. First check that
the article numbers correspond with
the article numbers correspond with
each other.
each other.
7. Is there still a fault with the drive
7. Is there still a fault with the drive
motor system.
motor system.
šš
No
No
If the fault moves to the pump motor
If the fault moves to the pump motor
system, change the drive regulator that
system, change the drive regulator that
is now fitted in the pump regulator's
is now fitted in the pump regulator's
place.
place.
Y
Yes
es
8. Change the drive regulator.
8. Change the drive regulator.
Was the warning text “High tmp drive
Was the warning text “High tmp drive
C” visible on the display when the
C” visible on the display when the
symptom occurred?
symptom occurred?
šš
No
No
Go to, symptom: high temp in the drive
Go to, symptom: high temp in the drive
motor.
motor.
Y
Yes
es
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