Looking for advice on connecting an analog 3-wire device to a Rockwell 5069-IF8 input card despite the manual stating they are not supported. Seeking a workaround for this issue. Any experiences to share?
Looking to connect an analog 3-wire device to a Rockwell 5069-IF8 input card? While the manual may indicate that 3-wire devices are not supported, there may still be a solution available. It's worth noting that the main distinction between a 3-wire and a 4-wire device lies in the shared 0VDC on the instrument power and the signal output. If attempting to connect the 3-wire device as a 4-wire one proves unsuccessful, you may need to consider using an isolation transmitter for compatibility.
I am puzzled as to why the transmitter isn't functioning when powered by the same source as the PLC. The transmitter should be connected with + to 24VDC and - to 24VDC, with the output going to input 0+. Additionally, input 0- on the card should be connected to the same 24VDC - as the transmitter. It is presumed that you are referring to a 4-20mA device, rather than a 1-5VDC or 0-10VDC device.
While it's true that the Rockwell 5069-IF8 is designed for 4-wire analog devices, there's a workaround you could try. You may consider converting the 3-wire analog signal to a 4-wire one through an external device specially designed for this purpose. However, be cautious about this setup, as it's outside the normal operation parameters and can impact your warranty or cause system instability. You're better off contacting Rockwell's support team to verify this before proceeding.
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Answer: 1. Can I connect a 3-wire analog device to a Rockwell 5069-IF8 input card even though the manual mentions they are not supported? - While the manual may state that 3-wire analog devices are not supported, some users have successfully found workarounds to connect them. It's recommended to proceed with caution and explore alternative solutions.
Answer: - Users have shared various workarounds and tips, such as using external converters or modifying the wiring configurations to establish a connection between a 3-wire analog device and the Rockwell 5069-IF8 input card. It may be beneficial to learn from their experiences before attempting a solution.
Answer: - Yes, it's important to consider factors such as compatibility, electrical specifications, and potential risks when trying to make such connections. Seeking advice from experienced users or professionals in the field can provide valuable insights to ensure a safe and effective solution.
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