Pneumatic solenoid valves belonging to 860 PCM variable flow Series housed in a single body nine shutters separately controlled. Said shutters have different fluid flow and are conveyed to a single outlet port. The solenoid valves are flow proportional and characterized by a linear link between the whole flow rate and the control binary code. Therefore, they represent the ideal solution for the flow control in a digital way (PCM technique).
Response times both in opening and in closing are less than a millisecond and are independent from the flow value.
Consequently, value changes of the flow occur with a negligible phase lag (over 1 ms) as regards the electric control, even in the case of the instantaneous variation from the minimum to the maximum value, allowed by the solenoid valve.
The operation life is over 500 millions of cycles for every single shutter.
Valve models of 860 PCM variable flow Series are available with two different precision levels of flow rate control: 64 flow levels with 6-bit configuration and 256 flow level with 8-bit configuration.
Solenoid valves of 860 PCM variable flow Series may be integrated with the electronic PCM 8130 driver board, which provides their pilot control. They are also preset for both tension signal (0 to 10 V) processing, and digital processing (see “Electronic Driver Boards”).

 6-bit (64 levels) pattern

8-bit (256 levels) pattern 

 Channel

C Nl / (min x bar)

Channel

C Nl / (min x bar)

1

54.20

1

36.13 

2

27.10

2

18.06 

3

13.55  

3

19.03

4

6.77 

4

4.52 

5 

3.39 

5

2.26 

6 

1.69 

6

1.13 

 -

 -

7

0.56 

 -

 -

 8 

0.28 

 Flow values of the single channels, rounded off to decimal second.

 6-bit (64 levels) pattern

8-bit (256 levels) pattern 

Max. Flow

108.39 Nl / (min x bar)

Max. Flow

72.26 Nl / (min x bar)

Min. Flow

1.69 Nl / (min x bar)

Min. Flow

0.28 Nl / (min x bar) 

Flow rate, max. 6 bar

752.84 Nl / min

Flow rate, max. 6 bar

506.13 Nl / min

The maximum flow value is determined by opening all channels.

The lowest value of flow is determined by opening either the channel 6 (6-bit pattern) or the channel 8 (8-bit pattern).
It represents the highest definition level of the solenoid valve.

The highest value of flow is determined by opening all channels. The condition corresponds to the maximum flow.

The total flow value is determined by the pattern (6-bit or 8-bit binary code), assumed by the channels, where 0-value represents the corresponding electrical OFF, and 1-value represents the corresponding electrical ON.

860 PCM Series - 64 flow levels version

Level
N

Channel pattern

Flow rate 6 bar
Nl / min

C
Nl / (min x bar)

1

2

3

4

5

6

 0

 0

 0

 0

 0

 0

 0

 0

1

0

0

0

0

0

1

11.86

1.96

2

0

0

0

0

1

0

23.72

3.39

3

0

0

0

0

1

1

35.57

5.08

4

0

0

0

1

0

0

47.43

6.78

5

0

0

0

1

0

1

59.29

8.47

 6

 0

 0

0 

 1

 1

 0

 71.15

 10.16

 7

 0

 0

 0

 1

 1

 1

 83.01

 11.86

 8

 0

 0

 1

 0

 0

 0

 94.86

 13.55

 9

 0

 0

 1

 0

 0

 1

 106.72

 15.25

 10

 0

 0

 1

 0

 1

 0

 118.58

 16.94

 ...

 ...

 ...

 ...

 ...

 ...

 ...

 ...

 ...

860 PCM Series - 64 flow levels version

Flow run upon varying N (64 levels).

860 PCM Series - 256 flow levels version

Flow run upon varying N (256 levels).

•861 PCM 2/2 NC



General Characteristics