APV_CU4 AS-i_UK-5_072018.indd
UK
Control Unit
CU4 AS-interface
Instruction manual: UK - rev. 5
APV
29
8. CU Assembly and Startup
8.1.3 Startup
After proper assembly and installation of the control unit, startup can
be undertaken as described below:
1. Switch on the air supply.
2. Switch on the voltage supply.
3. Check the solenoid valves by turning the lever on the upper side of
the valve by 90°.
4. Check the valve position indicator and adjust feedbacks for open
and closed valve position as described below.
Forvalvesinnormallyclosed(air-to-raise,spring-to-lower)
/normallyopen(air-to-lower,spring-to-raise)designwith
turningactuator,thefollowingallocationapplies:
Closedvalvepositionfeedback–sensor1controlled
For the adjustment, Hall sensor 1 with non-controlled(controlled)
solenoid valve 1 is moved into the required position by turning the
adjustment screw 1. The LED Valve Closed lights up.
Openvalvepositionfeedback–sensor2controlled
FortheadjustmentofHallsensor2,atrst,the(non-controlled)
solenoid valve 1 is controlled. This can optionally be made
manually or electrically. The open valve position and the
corresponding feedback can be adjusted. This is undertaken
by turning the adjustment screw 2 until the required position is
reached and the LED Valve Open lights up.
ObservetheswitchinghysteresisoftheHalleffectsensors!
Therefore,adjusttheswitch-pointofthesensorswith
overlapinordertopermitsmallvariationsand,thus,
to prevent failures!
lever
solenoid valve