Max Time Expired (Specific)

What does 0x40CB mean?

The 'MaxTimeExpired' flag within the FB Envelope function block is TRUE. This confirms that the maximum permissible time for the safety function output to be active has been reached, causing the output to switch off. This fault prioritizes safety by ensuring the output does not remain active beyond its design limit.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify any associated timers or delays in the control system that could influence how long 'InValue' remains in the target state.

2. 4

   Ensure no external factors or system anomalies are inadvertently extending the period 'InValue' stays within the target range.