Analog Ouput/Input
Analog Ouput/Input
(OP)
Hi,
I'm usually confuse on how to tell if a particular device gives an analog input to the PLC or does it need an analog input from the PLC (hence PLC output). I usually get my way around by talking to the vendor. By looking at it based on the drawings e.g. for the kinetrol actuator that I'm working on (need to create the loop diagram), it requires 4-20mA for its positioner signal and angle re-transmit supply (see attachment).
How do you guys figure out which one is the analog output and which one is the input? Or are they all input to the PLC?
Thanks,
I'm usually confuse on how to tell if a particular device gives an analog input to the PLC or does it need an analog input from the PLC (hence PLC output). I usually get my way around by talking to the vendor. By looking at it based on the drawings e.g. for the kinetrol actuator that I'm working on (need to create the loop diagram), it requires 4-20mA for its positioner signal and angle re-transmit supply (see attachment).
How do you guys figure out which one is the analog output and which one is the input? Or are they all input to the PLC?
Thanks,
RE: Analog Ouput/Input
RE: Analog Ouput/Input
The bottom two terminals send a 4-20 mA signal to a loop-powered (i.e., two-wire) PLC analog input indicating the position of the unit - that's why it's called Position Feedback.
xnuke
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RE: Analog Ouput/Input
Brad
It's all okay as long as it's okay.
RE: Analog Ouput/Input