Wascomat Clarus Control SU620 - The Door Lock Unlocks the Door

159
Door and door lock
4
4
5931
Door lock
control
A31
Level
guard
B2
M1
Door lock
A41
Programme
unit A1
X92 X31
X96X95
X93
X30
X94
Motor
control
U1
Rotation sensor B3
(tacho)
X304
X302
X37
The door lock unlocks the door
The programme unit requests door unlocking by
applying 0 V on input X92 of the door lock con-
troller.
The following check is made prior to unlocking
of the door:
• No water in drum-inputX93fromlevelgu-
ardB2isclosed=0V
• Motor not engaged-inputX94frommotor
controllerU1open=5V
• Drum not turning-pulsefrequencyoninput
X95fromrotationsensorB3islessthan3Hz.
When the above conditions are met, the door
lock controller outputs an opening pulse on out-
put 96 to the door lock actuator/coil, which then
unlocks the door. Micro switches S4a and S4b
now interrupt the actuator/door lock and the I/O
card 1 relays lose all voltage to prevent the mo-
tor from starting (interlock signal on motor con-
troller input X302). The drain and water valves
of the machine are now disabled and the heater
and motor cannot be switched on.