User's Guide

emerald Quick Installation Guide

3.3 The Input/Output Board

The input/output board provides connections points for terminal power, inputs, outputs, and

third party Wiegand read heads.

Figure 10 Illustration of the Input/Output board

Important

RS232 and RS485 connections have not been evaluated by UL and are not for connection in UL Installations.

Component Description

A. Wiegand interface Interface for third party exit read-heads using Wiegand protocol.

B. Output 0 state switch Switches output 0 relay common ‘C’ between internal 12V or an external

12/24V UL294 or UL603 listed power supply.

C.12V and 0VDC 12V power from an appropriate UL294 or UL603 listed power source is

supplied to the terminal. 12V can also be drawn from this circuitry to

power attached door furniture.

D. Output 0 Lock output, either 12V provided by the terminal or 12/24V provided

externally via the relay and a UL294 or UL603 listed power supply.

E. Ribbon connector Links the I/O PCB to the front PCB.

F. Output 1 Spare output.

G. Output 1 state switch Switches output 1 relay common ‘C’ between internal 12V or an external

12/24V UL294 or UL603 listed power supply.

H. Input connectors Connection points for monitored inputs.

Table 9: Description of I/O board components

G. Output 1

state switch

B. Output 0

state switch

A. Wiegand

read head

interface

D. Output 0

(lock)

F. Output 1

(spare)

E. Ribbon

connector

H. Input

connectors

C. 12VDC