1604-1-4 Input Rating and Input CircuitThe input rating and input circuit for I/O connector input are described in this section.■ Input Rating■ Input CircuitThe following figure shows each input circuit. The input circuit is insulated by the bidirectional photo coupler.The input rating voltage is +12V DC to +24V DC.■ Input Connecting SampleItem I/O Connector InputInput Form Bidirectional photo coupler input (insulating input)Input Operation ON Voltage Difference of voltages between input and input common: 8V or moreOFF Voltage Difference of voltages between input and input common: 4V or lessRating Input Voltage +12V DC to +24V DC +/-10%In case of inputting a signal by the current outflowmethod(Equivalent to NPN open collector output)In case of inputting a signal by the current inflowmethod(Equivalent to PNP open collector output)Input common (14) - external power supply +Output common (15) - external power supply GNDInput common (14) - external power supply GNDOutput common (15) - external power supply +• The input and output circuits of this product are compatible with both NPN/PNP open collectoroutput. However, mixing NPN and PNP is not allowed.• If the open collector to be connected is NPN, use NPN to all the input and output circuits. If theopen collector to be connected is PNP, use PNP to all the input and output circuits. Refer to theconnecting sample shown above for wiring.• Be sure to use the interlock function for this product for safety, and refer to the connectingsamples of both input common and output common for wiring.Each Input TerminalInput Common1kΩ4.4kΩInputInternal Circuit(+12V DC to+24V DC)NPN Open CollectorOutputInputExternalPowerSupplyInputCommonEach Input(+12V DC to+24V DC)PNP Open CollectorOutputInputExternalPowerSupplyInputCommonEach InputCHECK
