Cause:
- no travel signal of the elevator control was registered within 2.5 s after activation of inputs STO_A and STO_B
Remedial action:
- check the elevator control system with regard to travel signals
- check the activation of the STO inputs
- check the wiring of the digital control inputs in the case of parallel control
- check the status of the serial control (CAN, DCP) using the status LED of the ZAdyn