AdaptnOvercome
Member
Problem:
Our PLC can only output 4-20mA, but the actuators it needs to control, modulate based on a 0-135Ohm signal. Buying 4 or 8 individual converters like DRN's is a solution, but we are looking for a more compact (and hopefully less expensive) solution. Replacing all of the actuators with ones that have a different control signal is not an option we have.
I've looked high and low and can't find anything but single channel signal conditioners for converting 4-20mA to 135Ohms. I did find an 8-channel device with 4-20mA inputs and -10V - 10V outputs, but I'm not sure how to get a 0-135Ohm output from a 0-10V output. Any help would be appreciated.
Our PLC can only output 4-20mA, but the actuators it needs to control, modulate based on a 0-135Ohm signal. Buying 4 or 8 individual converters like DRN's is a solution, but we are looking for a more compact (and hopefully less expensive) solution. Replacing all of the actuators with ones that have a different control signal is not an option we have.
I've looked high and low and can't find anything but single channel signal conditioners for converting 4-20mA to 135Ohms. I did find an 8-channel device with 4-20mA inputs and -10V - 10V outputs, but I'm not sure how to get a 0-135Ohm output from a 0-10V output. Any help would be appreciated.