Defect in a monitoring channel (Alarm)

What does C01711 mean?

This alarm signifies a defect within a safety monitoring channel, detailed by r2124 fault values. Causes include data cross-check errors between processors (0-2, 4-43, 58-999), difference in position actual value exceeding tolerance (p9542), differing monitoring function tolerance values (44-57), or an expired watchdog timer (1000) due to frequent F-DI signal changes. Initialization errors (1001), test stop issues (1005, 1011), cyclic communication failure (1020), or low current for encoderless acquisition (1041) can also trigger this alarm.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Upgrade the inverter firmware, particularly for initialization errors (1001).

2. 4

   For cyclic communication failure (1020), consider replacing the Control Unit or the inverter if power cycling does not resolve the issue.

3. 5

   For low current in encoderless actual value acquisition (1041), reduce the minimum current parameter (p9588).