
APV_CU4 AS-i_UK-5_072018.indd
UK
Control Unit
CU4 AS-interface
Instruction manual: UK - rev. 5
APV
32
8. CU Assembly and Startup
8.2.3 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
For single seat valves in normally closed (normally open)
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
lights 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 Open
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!
lever
solenoid valve