3
ELECTRICAL CONNECTION
A single 5-pin M12x1 connector is used to supply the solenoid
valve and handle the pressure switch signals.
Even if one of these functions is not present, it is always a 5-pin
connector.
Only the correct connectors must be connected as
shown in the diagrams below.
LEDs
The ONE electrical unit always has three LEDs,
but only those
associated with the current functions are active.
- ON :
GREEN LED. On if the electric V3V valve or the APR is
powered on.
- NC :
RED LED. Pressure switch’s normally-closed contact. It is
on if the actual pressure is lower than the pressure switch setting
and if an electrical circuit is connected.
- NO :
YELLOW LED. Pressure switch’s normally-open contact.
It is on if the actual pressure is higher than the pressure switch
setting and if an electrical circuit is connected.
CLOGGED FILTER SIGNAL
If the filter gets so clogged up that it causes an excessive drop in
pressure as the air passes through, the orange indicator will
project from the body by a few millimetres.
It only remains visible
while there is effectively a drop in pressure.
If for example the
required flow rate drops, the indicator will retract.
2 (NC)
3 (NO)
5
1
2
3
4
4 +24V DC
5 0V DC
1
2 (NC)
3 (NO)
5
1
2
3
4
1
5
1
2
3
4
4 +24V DC
5 0V DC
Version with solenoid valve
and pressure switch
Version with solenoid valve
Version with pressure switch
Leds
in course of
signalling
Summary of Contents for ONE
Page 1: ...USE AND MAINTENANCE ...
