Connecting To External Devices - Avigilon ENC-4P-H264 Installation Manual

Connecting to External Devices

External devices are connected to the encoder through the I/O
terminal. The pinout for the I/O terminal is shown in the following table
and diagram.
Table:External I/O Terminals
Pin Function
1 3.3 VDC
@200 mA max
2 Ground
3 Input 1
4 Input 2
5 Input 3
6 Input 4
7 Output 1
8 Output 2
9 Output 3
10 Output 4
11 RS485 A
12 RS485 B
1 2 3
3.3V 3.3V
3.3V GND
Figure: External I/O terminal schematics and example applications.
8
3.3 VDC output. May be used to power small
relays in conjunction with the relay outputs.
Ground.
To activate, connect the Input to the Ground
pin. To deactivate, leave disconnected or
apply between 3-15 V.
When active, Output is internally connected
with the Ground pin. Circuit is open when
inactive. Maximum load is 25 VDC, 120 mA.
Half-duplex RS-485 interface for controlling
PTZ cameras.
4 5 6
3.3V 3.3V
Description
7 8 9
GND
RS485 Device
10 11 12