Appendix A: Sensors A-2
Keyence FS-V20 Series Sensor Amplifiers D291511.18a.fm
Keyence FS-V20 Series Sensor Amplifiers
The Keyence FS-V20 Series sensor amplifiers are used for both the low cover tape sensor and
the empty pocket detector.
Selecting the Output Mode
The FS-V20 Series sensor-amplifiers can be set to two Output Modes: light-ON or dark-ON.
This determines under what conditions the sensor is triggered and the Operation Indicator is lit.
In light-ON mode, the sensor will be triggered when the current value (CV) of detected light from
the emitter is higher than the preset value (PV). In dark-ON mode, the sensor is triggered when
the CV of detected light is lower than the PV.
1. Press the Output Selector button. The CV Indicator will display the current mode.
2. Press the Manual button within 5 seconds of having pressed the Output Selector button.
The Output Mode will be toggled.
3. The CV Indicator will return to its normal display after 5 seconds have elapsed.
Fiber Lock Lever
Set Button
Preset Value (PV)
Manual Button
Output Selector
Output Indicator Light
Current Value (CV)
Mode Button
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