Wascomat Clarus Control SU620 - The Door Lock Locks the Door

158
Door and door lock
3
3
5931
Door lock
control
A31
Level
guard
B2
M1
Door lock
A41
Programme
unit A1
X92
X31
X96X95X93 X30X94
Motor
control
U1
Rotation sensor B3
(tacho)
X304
X302
X37
The door lock locks the door
When the door is closed (closed door lock
switch S3), the programme unit may request
doorlockingbyapplyingavoltageof200-240V
on the door lock controller A31 input X92.
The following check is made by the A31 card
prior to locking 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
controlU1open=5V
• Drum not rotating -pulsefrequencyoninput
X95fromrotationsensorB3lessthan3Hz.
When the above conditions are met, the card
A31 outputs a closing pulse on output X96 to
the door lock actuator/coil, which then locks the
door. The micro switches S4a and S4b in the
actuator/door lock are closed when the door is
locked. These micro switches feed voltage to:
• The output relays on the programme unit
card. The relays control the machine’s drain
andwatervalvesaswellasheaterswitch-on.
• Interlock signal for motor control (input
X302) that releases the motor start prevention
state.
Programme operation is now possible.