SAFE I/O CROSS CHECK ERROR(DCS PMC)

What does PW0010 mean?

The DCS PMC detected an error in the system-defined safe I/O cross-check function. This indicates a discrepancy in the monitored safe I/O signals critical for safety operation, which could lead to an unsafe state. A power cycle is required.

• Discrepancy between expected and actual status of safe I/O signals monitored by DCS PMC.
• Faulty sensor or actuator connected to DCS PMC safe I/O.
• DCS PMC internal logic error in cross-checking safe I/O.
• Wiring issue affecting signal integrity of safe I/O lines.
• Incorrect configuration of safe I/O mapping in DCS PMC parameters.

Click steps to track your progress.

1. 1

   Verify the status of each safe I/O point on the DCS PMC diagnostic screen.

2. 2

   Measure voltage at the DCS PMC safe I/O terminals (e.g., 24VDC input).

3. 3

   Check parameter P1-16 (DCS PMC Safe I/O Configuration) for correct mapping.

4. 4

   Inspect physical connections for all safe I/O devices.

5. 5

   Simulate safe I/O signals to test DCS PMC cross-check logic.