Connecting To External Devices - Avigilon ENC-4PORT-2AI Guia De Instalacion

Connecting to External Devices

External devices are connected through the I/O terminal. The pinout
for the I/O terminal is shown in the following table and diagram.
Consult the software user guide for details on how to configure the
external devices.
Table:External I/O Terminals
Pin Function
1 GND
2 RS-485 RX/TX+
3 RS-485 RX/TX-
4 I/O Common
5 Input 4(+)
6 Input 3(+)
7 Input 2(+)
8 Input 1(+)
9 Output 4
10 Output 3
11 Output 2
12 Output 1
Figure: External I/O terminal schematics and example applications.
Ground for RS-485 interface.
Half-duplex RS-485 interface for controlling
external equipment.
Shared pin for Input and Output.
The input uses a photocoupler and is electrically
isolated from the internal circuitry. The input
voltage should not exceed 12 V.
The output uses a photocoupler and is electrically
isolated from the internal circuitry. The output
terminal connections can be made with either
polarity. The output can drive a maximum load of
50 V and 120 mA.
RS-485
Encoder
Description
9-12
5-8
+
3V
Switch
-
4
3
External Device
2
1
Relay
+
24V
-
9