Axis Network Camera 221 User Manual page 47

I/O terminal connector pinout table
Pin Function
1 Output A
2 Output B
3 Digital Input 1
Photocoupler Anode (+)
4 Digital Input 1
Photocoupler Cathode (-)
5 Digital Input 2
Photocoupler Anode (+)
6 Digital Input 2
Photocoupler Cathode (-)
7 RS-485-A (non-inverting)
8 RS-485-B (inverting)
9 DC + Power Output
10 GND
I/O Terminal connector schematic diagram
Example schematic diagram of the AXIS 221 terminal connector - showing possible
applications.
Description
On the external device output terminals (A and B), there is no distinction between
positive and negative (+ and -). The terminals use a photocoupler and are electri-
cally isolated from the other internal circuitry.
The maximum load should not exceed 100mA and the maximum voltage should be
not more than 50VDC or 35VAC.
Photocoupled Input 1. Electrically isolated from the chassis and connectors, this
input can be supplied from an external DC voltage or the DC Power Input/Output on
pins 9 (DC+) and 10 (GND).
Photocoupled Input 2. As above.
A half-duplex RS-485 interface for controlling auxiliary equipment.
This can drive the photocoupler inputs or other equipment. The output voltage level
is 3.0 V. A maximum current of 100mA can be sourced from the DC output.
Ground.
1
o
2
o
3
o
4
o
5
o
6
o
A
7
o
RS-485
o 8
B
9
+
10
-
AXIS 221 - Unit Connectors
Optional
o
Relay
o
Switch
o
o
24V DC
Switch, etc.
+
_
External Device
o
Appliance
o o
Mains Power
Active
Control
Device
47