APV_CU4plus_AS-interface_UK-3_062019.indd
UK
Control Unit
CU4plus AS-interface
Instruction Manual UK-3
APV
10
3. General Terms
3.1.
Purpose of use
The control unit CU4plus AS-i has been developed for the control
of process valves in food processing industry as well as related
industries.
The CU4plus AS-i control unit operates as interface between
process control and process valve and controls the electric and
pneumatic signals.
The pneumatic control of APV valves is undertaken via the
solenoid valves. The control unit controls the valve positions,
open
and
closed
, via sensors. The electronic module undertakes
the task to process the switching signal from the control and to
control the corresponding solenoid valves. The electronic module
also provides for potential-free contacts. The corresponding light
signals in the control unit provide for an external indication of the
valve positions.
3.2.
Design of CU4plus AS-interface (fig. 3.2.)
The CU4plus AS-interface control unit consist of the following
components:
1.
The Control Unit base with integrated air channels and electric
and pneumatic connections as well as viewing windows with
type label.
2.
1 or 3 solenoid valves for the control of the valve actuators and
for the seat lifting of double seat valves.
- 1 solenoid valve with 1 logic NOT element for the control of the
valve actuators.
3.
Sensor module with integrated position measuring system for the
detection of the valve position.
4.
Electronic module for the electric supply, for the AS-i communication
with the control, evaluation of feedback signals and control of
solenoid valves as well as valve position indication through LED.
5.
Clamp ring to fasten the CU4 on the adapter.
6.
Cover with LED optics.
The cable/s by means of which the solenoid valves are connected
with the electronic module must be guided through the cable guide
at the rear side of the electronic module.
(fig. 3.2.1)
.
fig. 3.2.
3.
1.
5.
2.
4.
6.
cable guide
fig. 3.2.1
3.
2.
