Wilo Stratos PARA/-Z Serie Notice De Montage Et De Mise En Service page 46

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10 Faults, causes and remedies
Faults, causes and remedies tables 10, 10.1, 10.2.
Have faults remedied by qualified personnel only! Follow the safety instructions in
chapter 9!
Faults
Mains
undervoltage
Mains
overvoltage
Motor blocking
Synchronous run
defective
Motor overload
Short-circuit
42
Causes
Mains overloaded
Faulty supply by the
energy provider
e.g. due to deposits
High level of friction,
motor control not
okay
Deposits in the pump The motor stops when
Motor/module
defective
Performance of the
pump/remedy
Switch off and restart
the motor
Switch off and restart
the motor
Motor restarts after a
delay. After 5 unsuc-
cessful starts the
motor is switched off
permanently.
If the motor's rotating
field is not synchro-
nised, the pump tries
to restart every 5 sec-
onds.
overload has been
detected and restarts
after a delay.
The motor stops from a
short circuit and
restarts after a delay.
After 25 unsuccessful
starts the motor is
switched off perma-
nently.
Description
In the event of overvoltage or
undervoltage, the motor is
switched off. It starts auto-
matically when the voltage is
within the valid range once
again. SSM relay is active.
If the motor is blocked, a
maximum of 5 restarts are ini-
tiated at 30 second intervals.
If the motor is still blocked, it
is switched off permanently.
This can only happen if the
power is disconnected for
longer than 30 seconds and
then switched on again. The
unblocking programme runs
during every start-up proce-
dure. The SSM relay is active
as long as the internal error
counter is not ZERO.
In the event of a defective
synchronous run the motor is
shut off. A restart is initiated
after 5 seconds. The pump
starts automatically once the
rotating field is synchronised.
When the motor's power limit
has been reached, the motor
stops. A restart is initiated
after 30 seconds. The pump
starts automatically when the
motor's power is below the
limit.
After a short circuit the motor
is shut off. It is switched back
on after 1 second. After 25
short circuits it is shut off per-
manently. This can only be
reset if the power is discon-
nected for >30 seconds. The
SSM relay is active as long as
the internal error counter is
not ZERO.
WILO SE 02/2015