Panasonic LP-310 - Input Signal Specifications; Input Rating and Circuit Details

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4-1-4 Input Rating and Input Circuit
The input rating and input circuit for I/O connector input are described in this section.
■ Input Rating
■ Input Circuit
The 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 Sample
Item I/O Connector Input
Input Form Bidirectional photo coupler input (insulating input)
Input Operation
ON Voltage Difference of voltages between input and input common: 8V or more
OFF Voltage Difference of voltages between input and input common: 4V or less
Rating Input Voltage +12V DC to +24V DC +/-10%
In case of inputting a signal by the current outflow
method
(Equivalent to NPN open collector output)
In case of inputting a signal by the current inflow
method
(Equivalent to PNP open collector output)
Input common (14) - external power supply +
Output common (15) - external power supply GND
Input common (14) - external power supply GND
Output common (15) - external power supply +
• The input and output circuits of this product are compatible with both NPN/PNP open collector
output.
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 the
open collector to be connected is PNP, use PNP to all the input and output circuits. Refer to the
connecting sample shown above for wiring.
• Be sure to use the interlock function for this product for safety, and refer to the connecting
samples of both input common and output common for wiring.
Each Input Terminal
Input Common
1kΩ
4.4kΩ
Input
Internal Circuit
(+12V DC to
+24V DC)
NPN Open Collector
Output
Input
External
Power
Supply
Input
Common
Each Input
(+12V DC to
+24V DC)
PNP Open Collector
Output
Input
External
Power
Supply
Input
Common
Each Input
CHECK