Two-hand control block

The control block for two-hand start ZSB is a pneumatic AND element.

If the inputs 11 and 12 are pressurized within max. 0.5 s one after the other, the ZSB will switch through: an output signal is present at port 2. Control takes place via two external 3/2-way pushbutton valves.

As long as both pushbutton valves are activated, outlet port 2 is pressurized. If one or both pushbuttons are released, outlet port 2 is unpressurized. The system exhausts from 2 to 3.