An AP5 AI5 4-20 mA loss warning in Schneider drive indicates a loss of signal on Analog Input 5 (AI5). This means the drive isn't receiving a current within the expected 4-20mA range on that specific input terminal.

"AP5" "AI5 4-20 mA loss" warning in Schneider ATV950 drive indicates that the analog input AI5 is not receiving a valid 4-20 mA signal. This warning usually occurs due to issues with the current loop, such as a disconnected sensor, broken wire, or a malfunctioning signal source.

Steps to Troubleshoot and Resolve "AP5 AI5 4-20 mA Loss Warning":

1. Verify Signal Source:

   • Check the device or sensor that is supposed to provide the 4-20 mA signal to AI5. Ensure it is powered and operational.

2. Inspect Wiring:

   • Examine all wiring and connections between the sensor and the AI5 input on the drive. Look for loose, broken, or damaged wires. Ensure all connections are securely tightened and there is good contact at all terminals.

3. Measure Current:

   • Use a multimeter to measure the current at the AI5 input. Verify that it falls within the 4-20 mA range. If the current is outside this range, it will trigger the warning.
   • Check for continuity in the current loop to ensure there are no breaks or interruptions.

4. Check Parameter Settings:

   • Verify that the AI5 input is configured correctly in the drive parameters. Ensure that AI5 is set up to receive a 4-20 mA signal.
   • Review and adjust parameters related to AI5, such as input scaling, signal range, and any fault detection settings associated with AI5.

5. Inspect Signal Conditioning (if applicable):

   • If there are signal conditioning devices (like isolators or converters) in the current loop, ensure they are functioning correctly and not causing the issue.

Example: Addressing "AP5 AI5 4-20 mA Loss Warning"

1. Verify Signal Source: Check the device providing the 4-20 mA signal.
2. Inspect Wiring: Ensure all wiring to AI5 is secure and undamaged.
3. Measure Current: Use a multimeter to verify the current at AI4.
4. Check Parameter Settings: Ensure AI5 is configured correctly for 4-20 mA input.
5. Inspect Signal Conditioning: Verify any signal conditioning equipment is functioning.
6. Check for Interference: Ensure no electrical noise is affecting the signal.
7. Monitor Input Signal: Use the drive’s tools to observe the AI4 input signal.
8. Review Drive Documentation: Refer to the user manual for detailed guidance.
9. Reset the Drive: Clear the warning and observe if it reoccurs