Protégé® Eclipse LED Keypad Installation Manual

4.2 Communication ConnectionSupport for up to 250 keypads per Controller is provided. Connection to the system controlleruses the network communication RS-485 interface. The Protégé® Eclipse LED Keypad also requirespower to be supplied to the N+ and N- terminals.+-+AUX-External +12V power supply. Ifmore than one power supply isused ensure that the 0V (-) isconnected to all other powersupply devices poweringmodules on the same systemcontroller.KEYPAD #1REDBLACKBLUEWHITE+12V0VNANBN+ N- NA NBN+ N- NA NBSystem Controller networkcommunicaon terminals andmodule network.RED+12VKEYPAD #2BLACKBLUE0VNAWHITENBRED+12VKEYPAD #250BLACKBLUEWHITE0VNANBFigure 3 - Communication Connection!When using more than one power supply to supply multiple wiring runs ofProtégé® Eclipse LED Keypad connect the +12V terminals of only ONE powersupply unit to the N+ and N- terminals of the controller. Each power supply unitshould have the common (0V or -) connected together to ensure a common 0V.6