
Vacuum Generator
Series
kPa
SW2
SW1
S1
S2
ME
MODE
LED display
A Mode Change Switch 2 positions
B Mode Change Switch 3 positions
A Pressure setting trimmer
B SW1 Pressure setting trimmer
A Hysteresis setting trimmer
B SW2 Pressure setting trimmer
A
:
Vacuum switch with analog output
B
:
Vacuum switch with 2-point switch output
V
+
(Brown)
SW1 OUT(Black)
SW2 OUT(Gray)
COM(Blue)
Load
Load
V
+
(Brown)
SW OUT(Black)
ANALOG OUT(Gray)
COM(Blue)
Load
Main
circuit
Main
circuit
■ 3. Safety Instructions for LED Digital Vacuum Pressure Sensor
V
+
(Brown)
SW1 OUT(Black)
SW2 OUT(Gray)
COM(Blue)
Load
Load
V
+
(Brown)
SW OUT(Black)
ANALOG OUT(Gray)
COM(Blue)
Load
Main
circuit
Main
circuit
(
2
)
Differential response setting
①
Differential response setting can be adjusted by the
hysteresis setting trimmer (HYS).
②
Differential response setting range is regulated within
about 0-15% of the set value. Differential response
setting becomes large when the trimmer is turned in the
clockwise direction.
③
Differential response setting adjustment
Set the indicator switch at ME (pressure indication mode).
Increase or decrease the supply pressure gradually
around the set pressure value and read the value at ON/OFF of the switch LED. Differences in
displayed values are taken as differential response.
④
Hysteresis adjustment is useful for the following cases:
・
Increase differential response when pressure pulsates with output repeatedly showing small on/off
movements.
・
When an allowable range is to be set for the lowering of pressure.
(
3
)
Wire Connecting Method
①
Do not use the vacuum switch in the environment or gasses containing corrosive substance. It may
cause a sensor trouble.
②
Wiring or ways by which noise or other disturbance is caused may cause a sensor trouble.
③
Since the sensors are not explosive-proof, do not use them in an inflammable or explosive gas, fluid or
atmosphere.
④
Since the sensors are not drip / dust proof, do not use them in locations where they may be exposed
to water or oil drops or dust.
⑤
Do not use the sensor in an atmosphere exceeding the range of application temperature or causing
heat as sensor malfunction may result.
⑥
Make sure to turn off the power before wiring. Check the wire colors, and do not short-circuit output
terminals, power supply terminals and COM terminals when wiring. Short-circuits may cause a sensor
trouble.
⑦
Do not give an excessive tensile strength and bending on a lead wire. Otherwise, breaking wire or
damage on connector may be caused.
⑧
Do not keep applying 0.2MPa or more of positive pressure to the vacuum pressure sensor constantly
during a blow-off air supply. Otherwise, damaging to the sensor may be caused.
⑨
When adjusting pressure and differential response, use a flathead screwdriver (accessory). Do not
apply an excessive force on the trimmer and slowly turn it within its rotation limits. Otherwise, there is a
risk of damaging the trimmer and the circuit board.
⑩
Supply a stable DC power to the product.
NPN open collector / 2 switch output
NPN open collector / 1 switch output and 1 analog output
PNP open collector / 2 switch output
PNP open collector / 1 switch output and 1 analog output
Содержание VK Series
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