Cause : Shutdown path must be tested comes when the time set in p9659 for the forced checking procedure of the safety shutdown paths has been exceeded.

a1699 siemens indicates Shutdown path must be tested. This usually involves pressing an emergency stop button or activating a safety gate that is interlocked with the STO input of the drive.

Follow these steps to correct a1699 siemens:

• Select STO and then de-select again.
• Check drive STO wiring.