How Can We Help?
Parallel connection of open collector outputs
Question
I am using the totem-pole output of the TRD-N/GK series connected to the high-speed counter input of the PLC.
Add a high speed counter and use it for another control.
Is it possible to connect in parallel?
The high-speed counter input has a pull-up voltage of 24V, a current of 2 to 5mA for both + common and -common.
Answer
The output current specification of the TRD series is 30mA.
Therefore, if the high-speed counter input current of the PLC is 5mA, up to 6 units can be connected. [Output current: 30mA ÷ High-speed counter input current: 5mA]
However, if it is used near the rated upper limit, perform sufficient operation verification.
Inquiry
Technical support
Click here for inquiries by email
Click here for inquiries by email