A control panel installed with the valve NGV A3 must continuously monitor the signals RDY and RUN (UP)
that it receives from the card NGVA3-xx.
The control panel should go in error status, stop the system and do not send commands to the valve and / or
the motor / pump when, for more than 2,5s, signals RDY and RUN are simultaneously in the same
condition.
The contemporary of the ON or OFF status require different behaviours, in particular:
- If RDY and RUN are both in ON status, the control panel must detect the error, move the car to the
nearest landing and stop the system without allowing more travels;
- If RDY and RUN are both in OFF status, the control panel must stop immediately the system and
prevent any further movement with the exception of the manual emergency operation.
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