5
Control Unit
CU4 Direct Connect
Instruction Manual: UK-3
Control Unit CU4 Direct Connect UK-3 / 20.04.2011
UK
APV
3.
General Terms
3.1.
Purpose of use
The Control Unit Delta CU4 Direct Connect has been
developed for the control of process valves used in the food
industry and related industries.
The CU4 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 integrated and external 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
potential-free contacts.
The corresponding light signals in the control unit provide for an
external indiciation of the valve positions.
3.2.
Design of CU4 Direct Connect (fig. 3.2.)
The Control Units CU4 Direct Connect mainly consists
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 2 integrated Hall sensors or 2 external
proximity switches to detect the valve position.
4.
electronic module for the electric supply, communication with
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 ear at the
rear side of the electronic module
(fig. 3.2.1)
.
1.
5.
2.
3.
4.
6.
fig. 3.2.
2.
3.
ear
fig. 3.2.1
