Panasonic MICRO-IMAGECHECKER A200 Series Hardware Manual

Also see for MICRO-IMAGECHECKER A100 Series: Operating instructions Operating instructions

Contents

Input/Output Terminals (Input/Output Ports)A200/A100 Hardware3 − 73.4 Cautions Related to Parallel Input/Output3.4.2 About Parallel Input− The controller accepts (±) common. To prevent input signal chattering, use anon−contact input (transistor etc.). If chattering occurs, inputs can be missed, andinput recognition delayed.− Be careful when using only full−wave rectification (including ripples) power supplyfor DC input, as it may cause abnormal operation.− When current is leaking from the input side there are cases when input will not turnOFF. Use the diagram below as reference to connect resistance.Controller parallel inputResistanceOutputExternal deviceInput terminalCOMterminal (±)− When you are using a two−line opto−electrical sensor or proximity sensor and thecontroller will not turn OFF due to the effects of leaking electrical current, connectbleeder resistance.− Even in cases where LEDs such as LED read switches are connected in series toan input contact point, make sure the controller’s input terminal receives morevoltage than the ON voltage.