Instruction Manual
D103621X012
4320
January 2018
3
Figure 2. Control Operation—Wireless Automated Valve
CHANGE COMMAND
VALVE POSITION
FEEDBACK
CHANGE
COMMAND
RESULTS IN
VALVE CHANGE
1
2
3
4
5
COMMAND TO MAKE A VALVE CHANGE STARTS AT THE CONTROL SYSTEM HOST AND IS SENT TO THE GATEWAY.
THE GATEWAY ROUTES THE VALVE CHANGE COMMAND TO THE 4320.
THE 4320 ACTS ON THE VALVE COMMAND AND MAKES VALVE CHANGE.
THE 4320 MONITORS VALVE POSITION AND SENDS UPDATES TO THE GATEWAY.
THE GATEWAY PROVIDES CURRENT VALVE POSITION DATA TO CONTROL SYSTEM HOST. THE VALVE POSITION
FEEDBACK IS USED TO CONFIRM THAT THE REQUESTED ACTION “COMMAND” WAS PERFORMED.
CONTROL SYSTEM HOST
WIRELESS NETWORK
GATEWAY
Figure 3. Control Operation—Snap-Acting Control
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2
3
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THE 4320 MONITORS THE PROCESS POSITION (EXAMPLE: LIQUID LEVEL).
THE 4320 ACTS ON PROCESS POSITION CHANGES (EXAMPLE: HIGH LEVEL DETECTED)
AND CAUSES VALVE TO OPEN OR CLOSE. ACTION IS DETERMINED BY THE LOGIC IN THE 4320.
THE 4320 SENDS POSITION AND OUTPUT STATE UPDATES TO GATEWAY.
THE GATEWAY PROVIDES THE CURRENT PROCESS POSITION DATA AND VALVE OUTPUT
COMMAND TO THE CONTROL SYSTEM HOST.
CONTROL SYSTEM HOST
WIRELESS NETWORK
GATEWAY
INTEGRATED
LEVEL
SENSOR
PNEUMATIC
SUPPLY
TANK
FILL VALVE