Fail Safe Wiring

• By interfacing the floors that require security to the normally closed connection of the relay, the Elevator Controller operates in a fail safe mode
• Connection is achieved by breaking the button input from the elevator system and connecting either end to the C and NC connection for the appropriate floor relay
• Although you can break either side of the button wiring to provide the same functionality, we recommend the elevator company break the control signal and not the common for the button
• This method allows a very simple migration to the destination reporting option if required in the future

Fail safe wiring requires the relays to be inverted in programming.