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Control Unit CU4 AS-interface UK-0 / 31.05.2010
Control Unit
CU4 AS-interface
Operating Manual: UK-0
UK
4.
Mechanics and Pneumatics
4.4.2. CU43 AS-interface for double seat valve DA3
Functional description - block diagram
seat lift cylinder
lower valve seat
main cylinder
and integrated seat lift cylinder
upper valve seat
Picture shows a standard NC
(spring to closed) valve.
If NO (spring to open) valve is used,
the sensor wiring can be different.
NTERFACE
EMV
/solenoid 1
EMV
/solenoid 2
EMV
/solenoid 3
Sensor 1
(“Valve closed”)
Sensor 2
(“Valve open”)
Abluft /
Exhaust
Abluft /
Exhaust
IN
Luft / air
1
2
3
4
5
6
7
8
AS-i-Bus +
AS-i-Bus -
5 VDC
Sensor 2
GND
10
11
12
Normal
Feedback
Reverse
5 VDC
Sensor 1
GND
