12
Test pulse error
ABB · AC500-S Safety
What does 12 mean?
An error was detected during the generation or detection of test pulses on an I/O channel. Test pulses are critical for diagnostics and ensuring the integrity of safety circuits, especially in detecting wiring faults. This fault indicates a potential wiring problem or sensor issue, compromising safety functionality.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Ensure the I/O module is correctly configured for test pulse generation and evaluation.
Source: ABB AC500-S Safety
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