Two-Hand Sequence Violation

What does FB TWOHAND Bit 6 mean?

A specific two-hand error sequence violation has occurred: one input pair was actuated, and while waiting for the second, the first input pair was released before the second was actuated. This indicates an incorrect operating procedure or a 'teasing' attempt, which compromises the safety principle of simultaneous two-hand control and halts the machine.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review the mechanical and electrical integrity of the two-hand control device to ensure reliable sensing and hold functionality.

2. 4

   Check the timing parameters within the FB TWOHAND configuration related to sequence monitoring for proper values.