Example Of Energy Saving Operation - SMC Networks EtherCAT EX260-VEC1 Operation Manual

6. Example of energy saving operation

Positive pressure
H3
Pressure of
P3
release
status
Atmospheric
pressure
H1
Pressure of
vacuum
P1
status
Energy
saving
P2
function
H2
Negative
ON
Vacuum
instruction
OFF
Open
Supply
valve
Closed
ON
Release
instruction
OFF
Open
Release
Valve
Closed
Vacuum 1
status
bit 0
Release 1
status
bit 0
 (1)After the vacuum instruction is ON, the supply valve is automatically closed when the vacuum
pressure reaches P2.
 (2)When the vacuum pressure drops by P2-H2, the supply valve is automatically opened again.
 (3)Repeat steps (1) and (2) unless the valve protection function is activated.
 (4)The vacuum status bit is set to 1 until the vacuum pressure reaches P1 and then drops to P1-H1.
 (5)The release status bit is set to 1 until the release pressure reaches P3 and then drops to P3-H3.
 For the setting of each threshold and hysteresis, refer to
(2)
(1)
(4)
Fig 6-1. Example of energy saving operation of ejector
(3)
Section 5.1.1 onwards.
-23-
Time
(5)
No.DOC1048575-1