25
Control Unit
CU4 Direct Connect
Instruction Manual: UK-3
Control Unit CU4 Direct Connect UK-3 / 20.04.2011
UK
APV
lever
solenoid valve
8.1.3. Start-up
After proper assembly and installation of the control unit,
start-up 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 handle 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.
For valves in normally closed (air-to-raise, spring-to-lower)
/normally open (air-to-lower, spring-to-raise) design with
turning actuator, the following allocation applies:
Closed valve position feedback – sensor 1 controlled
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
light
s up.
Open valve position feedback – sensor 2 controlled
For the adjustment of Hall sensor 2, at first, 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 Ope
n
lights up.
Observe the switching hysteresis of the Hall effect sensors!
Therefore, adjust the switch-point of the sensors with
overlap in order to permit small variations and, thus,
to prevent failures!
8.
CU Assembly and Start-up
