About Parallel Input - Panasonic MICRO-IMAGECHECKER A200 Series Hardware Manual

A200/A100 Hardware
3.4.2

About Parallel Input

− The controller accepts (
non−contact input (transistor etc.). If chattering occurs, inputs can be missed, and
input recognition delayed.
− Be careful when using only full−wave rectification (including ripples) power supply
for DC input, as it may cause abnormal operation.
− When current is leaking from the input side there are cases when input will not turn
OFF. Use the diagram below as reference to connect resistance.
Controller parallel input
COM
terminal (
Input terminal
− When you are using a two−line opto−electrical sensor or proximity sensor and the
controller will not turn OFF due to the effects of leaking electrical current, connect
bleeder resistance.
− Even in cases where LEDs such as LED read switches are connected in series to
an input contact point, make sure the controller's input terminal receives more
voltage than the ON voltage.
) common. To prevent input signal chattering, use a
±
)
±
Resistance
External device
Output
Input/Output Terminals (Input/Output Ports)
3.4 Cautions Related to Parallel Input/Output
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