Key Management Systems Ltd 21 | P a g e
Communication BUS
Communication BUS — Master to Slave.
Low current 0v connection up to 200ma output current return.
Low current 12v DC at up to 200ma output current (BUS reader only).
Communication BUS — Slave to Master.
High current 0v connection up to 5A output current.
High current 12v DC at up to 5A output current.
Communication BUS mode selection input (system reserved).
Lock 1 and Lock 2
Note: Inputs normally open, can be inverted to normally closed
Input: Door contact switch to 0v - N/C when the door is closed.
Input: Request to Exit switch to 0v.
Input: Trigger from Door Entry system. Generates unique event on the website.
Input: Switch to 0v (Local Fire (specific door)).
Input: Switch to 0v (Global Fire (all doors)).
Output: Relay Normally Closed (Auxiliary Relay 3 & 4).
Output: Relay Common (Auxiliary Relay 3 & 4).
Output: Relay Normally Open (Auxiliary Relay 3 & 4).
Note: Aux 3 & 4 relays follow lock 1 and lock 2 outputs automatically