Analogic Control - Asco JOUCOMATIC SENTRONIC 601 Série Manuel D'installation

GB

ANALOGIC CONTROL

The Sentronic valve is factory adjusted for 0 - 10 V input voltage.
It can also be controlled with following input signals:
• Other voltage range : Every zero voltage in a range of -5 to +5 volts
with a 50. . .100% span.
For example: -5 . . . +5V; -2 . . . +8 and so on. . . (impedance 100 KΩ)
For adjustment of offset and span, refer to the detailed procedure.
See following pages.
• Current input: For factory adjusted 0-20 mA input current (impedance 500 Ω), use
option 010 713 (free potential 0-20 mA input, option 010 611).
For factory adjusted 4-20 mA input current (impedance 500 Ω) use option 910 507
(free potential 4-20 mA input, option 910 508).
• Digital input: There is another Sentronic valve type for control with 8 bit digital
setting with hold function (D/A option 010 537) or 8 bit digital setting with reset
function (D/A option 010 606).
FACTORY ADJUSTMENT
SENTRONIC valves are factory adjusted as follows:
- Output pressure zero (air pressure) for 0 volt input signal.
- The span is 10 volts for vacuum (-1 bar).
- Minimum hysteresis.
- Maximum proportional gain.
Special adjustment by the customer is possible (see following pages).
For factory adjustment 0 - 20 mA: order option 010 713
CUSTOMER ADJUSTMENT PROCEDURE FOR BLEED VERSION
First adjust offset and then span and, if necessary, proportional gain.
1/ Set minimum output vacuum for minimum setpoint: potentiometer P2.
2/ Set maximum output vacuum for maximum setpoint: potentiometer P1.
18
4 - 20 mA: order option 910 507.