Elevator Floor Relay Connections

Control relays can be wired in either a normally open connection (fail secure) or a normally closed connection (fail safe)

• Fail Safe: When power is interrupted (fails), the electronic locking device is released (unlocked)
• Fail Secure: When power is interrupted (fails), the electronic locking device is secured (locked)

It is recommended that the relays be connected in the fail safe operation. This is mandatory if the installation is to comply with UL specifications.