Function - Electrolux W4400H Service Manual

160

Function

DANGER
Be careful when measuring the electric components in the motor
control. All components have a potential difference of approx. 300 V
in relation to protective earth and neutral.
When the green LED on the motor control card is lit, the compo-
nents carry dangerous voltages.
The motor control lose all voltage about 10-30 seconds after the
voltage has been disconnected and the motor has stopped.
The motor control communicates with the programme unit via a serial two-
3
way interface. With the help of the motor control, the programme unit can
control not only the instantaneous motor rpm, but also with high precision
the acceleration and retardation of the motor in order to reach the target
rpm. The motor control continuously replies with information to the pro-
gramme unit PCB regarding the current operating state and sends reports
if an error occurs.
3
Programme
unit
X01
Unbalance switch S9
Voltage supply
X2
Motor control
XA2
X2
Brake resistance
Motor
Door lock control unit X99
X2
X2
XA2
Interlock relay K11
Feed
Motor
Thermal protection (PTC)
24 V
6057