Camozzi Pneumatics Manual

CIRCUIT TECHNIQUE

I.C.

a0 a1

Cil. "A"

b0 b1

Cil. "B"

Cil. "C"

MS1

MS2

MS3

MS4

MS5

MS6

Fig. 102

Figure 103

With this example the emergency stop and cycle reset commands are introduced.

Emergency

: a bistable 5/2-way valve has been used, in the shown position it feeds all the limit switches; when

actuated it doesn’t allow the sequencer to continue the cycle, as it interrupts the compressed air supply,

stopping

the cycle in its current Phase.

Resetting the

command, the sequencer

resumes from the Phase inwhich it had stopped

Reset

: this command is active only during the

phase. If actuated, the memory valves of all the sequencers

(

) will reset, putting them in the closed position, the bistable valvewhich controls cylinder

repositions itself.

Another function is to prepare the 3/2-way memory valve to feed the

I.C.

command via the

function and the

command in the

open

position

As indicated in the previous chapters, the

and

Reset

functions must be properly analyzed in order to prevent

damage to equipment. The example described above is for educational purposes only.

a0 a1

Cil. "A"

b0 b1

Cil. "B"

c0 c1

Cil. "C"

Reset

MS1

MS2

MS3

MS4

MS5

MS6

I.C.

EM.

Fig. 103

191

CAMOZZI

CIRCUIT TECHNIQUE