FESTO 576656 CONTROL BLOCK FOR TWO-HAND START ZSB-1/8-B

This pneumatic control block for two-hand start ZSB is used where a manually started operation, such as the triggering of compressed air cylinders, would otherwise involve danger for a machine operator, or with other devices where machine operators have to have both hands clear of a danger zone when starting a machine. The ZSB will only switch if pressure is applied simultaneously via 3/2-way pushbutton valves to the two inlet ports 11 and 12 of the ZSB, i.e. within max. 0.5 seconds, and if there is an output signal at port 2. If both pushbutton valves are activated, outlet port 2 is pressurised. Releasing one or both pushbutton valves interrupts the flow immediately and the outlet port 2 becomes unpressurised. The system vents from 2 to 3. The pneumatic control block for two-hand start is a safety component in accordance with the EU Machinery Directive. It falls within Category 1, PL “c” according to EN ISO 13849-1 and conforms to Type III A according to EN 574.