Wascomat EX618 Service Manual - Motor and Motor Control

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The motor control is also able to deliver the various instantaneous and 

output values during constant speed, acceleration and retardation. These 

values are used to calculate the weight of the loaded laundry and to detect 

any load imbalances. A separate unbalance switch can also be connected 

to the motor control.

When the drum in a drain sequence starts its acceleration from wash rpm 

to distribution rpm, the extreme unbalance measurement will start once 

about 90% of the distribution rpm has been attained. Subsequently, during 

the entire remaining super unbalance measurement, the distribution time 

and during the entire subsequent extraction time, the program unit will 

detect whether there is any extreme unbalance.

In case of extreme unbalance that can arise if e.g. a spring strut is defec-

tive or when washing in sacks, the acceleration will be stopped to wait for 

the drum to stop. If extreme unbalance arises during:

a.  distribution or during super unbalance measurement, the drain se-

quence will restart from the beginning. The number of restart attempts 

can be changed in the system data but is usually set to 5. The value can 

also be changed via configuration 2.

b.  extraction, the program will stop and move to the wash sequence after 

extraction.

The safety system of the machine includes double detection of the door 

lock. Both the programme unit and motor control use different switches to 

detect proper door locking. The motor cannot start unless both switches 

verify the door is locked.

Motor and motor control