21
8
7
Machine presentation
7
8
Door lock control A31
Door lock
6109
Door lock control
A31
Level gu-
ard B2
M1
Door lock
A41
Programme unit
A1
Motor
control U1
I/O card
A11
Rotation sensor B3
5225
Door lock
Thedoorlockisanelectro-mechanicaltypewith
doublesafetyswitches.Thelockisbi-stable,
i.e., it needs to receive an active pulse from
the control in order to both lock and unlock the
door.
A separate printed circuit board, called door lock
control, can be fitted onto the programme unit.
This board controls locking and unlocking. The
card has separate checks for empty drum and
stopped drum. Together with the checks built
into the programme unit, this guarantees that the
door cannot be opened by a mistake.
The door lock on the machine is described in
detail in section Door and door lock.