Kval 990-H, Service Manual

Page: 85 / 104

About a Typical Pneumatic Circuit
4-13
KVAL 990-H Service Manual
Typical Pneumatic Assembly
Pneumatic assembly setups vary in KVAL machines depending on where it is used and air
requirements.
This is a general overview of a pneumatic assembly . See the machine’s Air
Print for detailed information.
Air Input
Cylinder
Retract Cylinder
Extend
Electrical Wiring Box:
Contains inputs from PLC
to Coils (Solenoids)
Manifold: Base to accept air
input and output air.
Coil (Solenoid): Receives
input(24V) from PLC to open a port
FIGURE 4- 8.
Typical Pneumatic Assembly
About the Coil (Solenoid)
The Solenoids are connected to the top of the manifold. Labels indicating their function and PLC
connections are attached to the solenoid body. Use this information to troubleshoot system if nec-
essary.
Solenoid type will vary with machine application.
Common controls include an operational LED and
Manual operation button
Manual Activate Button: Push to toggle solenoid to the
‘ON’ state. activates if power is off.
Indicator: a Lit LED indicates the solenoid is in
use.Red LED= the ‘A’ Port on a single valve. If double
valve, Red LED= the ‘A’ Port and Green LED = the ‘B’
port.
FIGURE 4- 9.
Solenoids in Manifold