Hello everyone! I recently got my hands on a Revolution Pi Connect 4 along with the MIO module and I am interested in collecting process data from a WIKA A-10 pressure sensor with a 2-wire, 4-20 mA output. I am seeking a comprehensive guide on connecting this sensor to the PLC and retrieving the data. I initially connected the U+ wire from the sensor to IN1 on the PLC and the U- wire to ground, but it did not yield results. Would I require additional signal conditioning, such as the Phoenix Contact MCR-SL-U-I-UI-SL, to convert the 4-20 mA signal from the sensor to a 0-10V signal? It is important to note that the analog input of the MIO module is designed to measure voltage (0-10V) and does not support current directly. Any detailed instructions on the correct wiring and configuration procedures would be greatly appreciated. For reference, here is the datasheet for the Digital & Analog Input module I am using: [insert link] and here is the datasheet for the WIKA A-10 sensor: [insert link]. Thank you in advance for your help!
In this demonstration, I illustrate how I linked the PT100 temperature sensor's output to a 4-20mA converter, ultimately feeding into a 0-10V input by integrating a 500ohm resistor. Additionally, the datasheet for the converter is provided for your reference. Incorporating the 500ohm resistor acts as the load for the 4-20mA signal, enabling the measurement of the voltage across the resistor. Typically, a voltage input exhibits high resistance, making the 500ohm resistor the critical element in the circuit. By applying Ohm's Law and calculating V = IR (voltage equals current multiplied by resistance), you can determine that 20mA multiplied by 500 ohms equals 10V. It is likely that the 4-20mA sensor is isolated, making the resistor method effective. However, if you prefer additional signal isolation, utilizing the MCR-SL-U-I-UI-SL is also a valid option.
Hey there! You're correct in knowing the MIO module does not support current directly. For interfacing your WIKA A-10 4-20 mA sensor with the Revolution Pi Connect 4 to collect process data, you indeed need a current to voltage converter, just like the Phoenix Contact MCR-SL-U-I-UI-SL you mentioned, to convert the 4-20 mA sensor output to a 0-10V signal for the module to read. Doing this, and making sure your IN1 is in 'AI' (Analog Input) mode, should get you started. Do remember to calibrate your converter to ensure your readings are accurate. Moreover, follow safety precautions while dealing with the live circuit. Looking forward to hearing about your progress!
Hey there! It sounds like you're off to a good start, but since your MIO module only accepts voltage inputs, you'll definitely need that signal conditioning module like the Phoenix Contact MCR-SL-U-I-UI-SL to convert the 4-20 mA output from your WIKA A-10 sensor to a 0-10V signal. In terms of wiring, you'll want to connect the U+ (signal +) to the input of the signal conditioner, the U- (signal -) to the ground of your power supply, and then output the conditioned 0-10V signal from the MCR unit to your PLC's IN1. Don't forget to provide the necessary power to the signal conditioner too! It would also be a good idea to check the grounding and ensure all components share a common ground to prevent any issues. Let us know how it goes!
Hey there! It sounds like you're on the right track with your setup, but since the MIO module only accepts voltage signals, you will indeed need something like the Phoenix Contact MCR-SL-U-I-UI-SL to convert the 4-20 mA output from the WIKA A-10 into a 0-10V signal. For wiring, connect the U+ from the sensor to the current input of the signal conditioner and U- to ground; then take the output from the conditioner and wire it to your MIO's IN1. Make sure to check the conditioning module's specifications for any additional power requirements as well. After that, you can adjust your PLC programming to interpret the incoming 0-10V signal correctly. Good luck, and let us know how it goes!
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Answer: Answer: To connect the sensor to the MIO module, you may need additional signal conditioning to convert the 4-20 mA output to a 0-10V signal, as the MIO module's analog input is designed for voltage measurement.
Answer: Answer: No, you would typically require additional signal conditioning, such as the Phoenix Contact MCR-SL-U-I-UI-SL, to convert the current output from the sensor to a voltage signal compatible with the MIO module.
Answer: Answer: Detailed instructions on the correct wiring and configuration procedures can be found in the datasheets of the MIO module and the WIKA A-10 sensor. It is important to ensure the signal conversion from current to voltage is done properly.
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