
1
2
3
4
5
6
7
8
10
11
12
5 VDC
Sensor 1
GND
5 VDC
Sensor 2
GND
Normal
Feedback
Reverse
AS-i-Bus +
AS-i-Bus -
Self-lock
connector
Pressure
reducing valve
(locked to 5 bar)
4. Mechanics and Pneumatics
4.4.2 CU41N – AS-interface
Functional description - block diagram
The picture shows a standard NC (spring to
closed) valve.
If NO (spring to open) valve is used, the sensor
wiring can be different.
Sensor 1
(“Valve closed”)
Sensor 2
(“Valve open”)
Solenoid valve
Throttle valves
P / Air supply
A / Exhaust
NOT element
APV_CU4 AS-i_UK-5_072018.indd
UK
Control Unit
CU4 AS-interface
Instruction manual: UK - rev. 5
APV
13