6
3.General Information
ED. 2010/11
3.
General Information
3.1.
DESCRIPTION
The
C
-
TOP
is a pneumatic control head designed to assure the optimum control of INOXPA process valves. It is compatible
with the majority of PLC (Programmable Logic Controllers) automated systems, with Digital communication, or with bus (AS-
Interface).
It is fitted to the upper part of the pneumatic actuator of the process valve in order to activate and provide remote electrical
indication of the operating position of the valve. The indicators can be of two types:
-
microswitches (with mechanical contact)
-
proximity inductive detectors (without contact)
C-TOP
can be fitted with any process valve available in the food, drink and biopharmaceutical industries.
3.2.
OPERATING PRINCIPLE
The
C-TOP
is a control head that includes signalling and command devices to control all types of (piston) process valves. This
element incorporates the following functions in a single element:
•
pneumatic and electrical control of the valve;
•
position indicators with feedback
•
possibility of communication by (AS-Interface) bus.
It is fitted to the valve’s pneumatic drive. It receives signals from a control panel or from a PLC to control the valve, and sends
signals to the PLC or control panel in order to indicate its status/position.
Moreover, the
C
-
TOP
, has 3 signalling LED’s providing information as to the status of the valve at all times:
-
green led:
indicates that the valve is in the ON position
-
red led:
indicates that the valve is in the OFF position
-
yellow led:
indicates that position 3 has been activated (for example: mix-proof valve).
3.3.
COMPONENTS
Led indicator
Electrical
connection
plate
C-Top cover
Detector position
adjusting screw
Solenoid valve
coonecting block
3/2 solenoid
valves
adjustable elbow
Cover gasket
C-Top base
Securing screw
Detector
bracket
Detector
(microswitch or
proximity)
Detector plate
Straight
coupling
Silencer
Valve
pneumatic
outlets
General Air
Outlet
