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• Tension Reducer (PRB) for 8-controls solenoid valves - 758 Series
• 9-Channel Driver Board PCM 8130
• 8-Channel Universal Driver Board
Tension Reducer (PRB) for 8-controls solenoid valves - 758 Series
PRB (Power Reduction Board) scheme, expressly developed for 758 Series, 8 control models, allows a significant reduction of the solenoid valve power consumption and optimises its use temperature even in particularly difficult use conditions, such as:
• use with non-stabilized tensions
• use in high temperature environments
• continuative use with 100% duty-cycle
PRB circuit is totally transparent to control driver of the valve and it intervenes in the case in which control times exceed 100 ms, by providing the coil with a resistance in series with consequent reduction of feeding tension. Considering the low value of the required tension to keep the valve open, the dissipation on the resistance results extremely reduced.
Marginal note:
PRB circuit limits solenoid valves maximum operative frequency to 20 Hz.
PRB circuit is not consistent with solenoid valves equipped with anti-disturbance diodes.
PRB circuit incidence on the power dissipated by solenoid valves:
|
Model
|
VDC
|
Dissipated power
(single coil)
|
|
Solenoid valves 7588 24
|
24
|
Without PRB 1.25 W
|
|
Solenoid valves 7588 24
|
24
|
With PRB 0.42 W
|
|
Solenoid valves 7588 JJ
|
24
|
Without PRB 1.9 W
|
|
Solenoid valves 7588 JJ
|
24
|
With PRB 0.64 W
|
How to order PRB Driver Boards:
|
Model
|
VDC
|
No.Channels
|
Valves
|
Code
|
|
7588 24
|
24
|
48
|
6
|
560.072 G
|
|
7588 24
|
24
|
40
|
5
|
560.107 P
|
|
7588 24
|
24
|
32
|
4
|
560.108 Q
|
|
7588 JJ
|
24
|
48
|
6
|
560.092 A
|
|
7588 JJ
|
24
|
40
|
5
|
560.105 N
|
|
7588 JJ
|
24
|
32
|
4
|
560.106 O
|
9-Channel Driver Board PCM 8130
The 9-channel driver board PCM 8130 is prearranged for the control of the proportional flow solenoid valves of 860 PCM Series. Said driver board may be setup through two dip-switches both for the control of 6-bit models with 64 conductance levels, and for the control of 8-bit models with 256 conductance levels. The driver board accepts either 6- and 8-digital signals with direct input, or 0 - 10 V tension signals, subsequently converted into binary code. Said drive board may be integrated in a suitable protection box, which makes easier its installation.
PCM 8130 electrical characteristics:
|
Supply voltage
|
24 VDC ± 10%
|
| Absorbtion current |
20 mA (when all s.v. closed) |
|
Input tension for s.v. control
(single channel)
|
24
|
|
Input current for s.v. control
(single channel)
|
24
|
8-Channel Universal Driver Board
The 8-channel universal driver board is suitable for the pilo driving of a wide range of Matrix solenoid valves both in on-off modality, and in speed-up modality.
In on-off modality the driver board automatically provides to reduce the tension value after the solenoid valve opening phase, reducing in such a way its consumption and thermal dissipation.
In speed-up modality the care and precision of the electric control assure the best working conditions to the solenoid valve and optimize its performance.
The arrangement of the driver board to the different solenoid valves features (configuration change) is easily performed by the user through the setup of three dip-switches, which are present therein.
The universal driver board is available with some different connection typologies. D-Sub and terminal board types may be integrated in a suitable protection box. facilitating their installation.
UDB electrical characteristics:
|
Supply voltage
|
24 VDC ± 10%
|
| Absorbtion current |
20 mA (when all s.v. closed) |
| Maximum frequency piloting |
200 Hz |
|
Input tension for s.v. control
(single channel)
|
5 ÷ 32 VDC
|
|
Input current for s.v. control
(single channel)
|
3 ÷ 25 mA
|
| Control |
NPN or PNP type |
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