How do I set up and operate Flex-Pro A3V with 4-20mA input?
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Overview
In this guide, you will learn how to set up and operate the Flex-Pro® A3V peristaltic metering pump in 4-20mA input mode for external control. This will enable you to adjust the pump's output speed based on the value of the 4-20mA signal.
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Setting up 4-20mA input mode
Step 1: Configure input settings
Step 1: Configure input settings
Press and release "Select Run Mode" to change the input option. Press and hold "Select Run Mode" once for 2 seconds until the "20mA Input" is displayed at the top left corner of the screen.
Step 2: Adjust minimum and maximum values
Step 2: Adjust minimum and maximum values
Upon entering the mode, use the up and down arrows to adjust the minimum and maximum values of the milliamp signal and percentage of motor speed. Press "ENTER" to save changes. Continue the process until all four screens have been configured.
Connecting the 4-20mA cable
Step 3: Prepare the pump
Step 3: Prepare the pump
To connect the 4-20mA cable to the A3 Flex-Pro pump, first remove power to the pump. Remove the liquid tight seal from the junction box enclosure with a flathead screwdriver.
Step 5: Install the liquid tight connector seal
Step 5: Install the liquid tight connector seal
Install the liquid tight connector seal provided in the shipping kit with every Flex-Pro pump.
Step 6: Connect the 4-20mA cable
Step 6: Connect the 4-20mA cable
Run the 4-20mA cable through the connector. Press the 4-20mA cable connector into the T1 terminal block. Reinstall power to the terminal board.
Step 7: Reassemble the pump
Step 7: Reassemble the pump
Reinstall the junction box to the pump and tighten the liquid tight connectors.
Testing the pump
Step 8: Connect a signal generator
Step 8: Connect a signal generator
After configuring the pump for the 4-20mA signal and connecting the 4-20mA wire to the terminal board, use a 4-20mA signal generator to test the pump. In this example, a Fluke device is connected to the 4-20mA cables.
Step 9: Apply power to the pump and signal generator
Step 9: Apply power to the pump and signal generator
Apply power to the pump and the Fluke device.
Step 10: Start the pump and activate the signal generator
Step 10: Start the pump and activate the signal generator
Press the start button on the pump and activate the Fluke meter.
Step 11: Observe the pump operation
Step 11: Observe the pump operation
Notice how the pump operates in relation to the output signal from the 4-20mA generator. If the pump is operating correctly, its output speed will adjust based on the value of the 4-20mA signal. In the example shown, 4 milliamps result in an output of 20%, and 60 milliamps result in an output of 70%. The linear pump output slope will be created, and if the pump receives more than 60 milliamps, the output will remain at 70%.
✅ Congratulations! You have successfully set up and operated the Flex-Pro A3V peristaltic metering pump in 4-20mA input mode.
In this guide, we've covered the steps to set up and operate the Flex-Pro A3V peristaltic metering pump using 4-20mA input mode. By following these steps, you can ensure proper operation and control of your metering pump in your application.
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