I/O Terminal Block - Axis 225FD User Manual

AXIS 225FD - Unit Connectors
48

I/O Terminal Block

The 7-pin I/O terminal connector provides the interface to a solid state relay output, two
digital inputs, RS-485/422 and GND.
The terminal connector is used in applications for e.g. motion detection, event triggering,
time lapse recording, alarm notification via email, image storage to FTP locations, etc.
• Input - Used for connecting external alarm devices and triggering images for
specific alarm-based events. The input is typically connected to a motion detector
or any other external security device, and images can be uploaded whenever the
detector is activated. Connect to GND to activate.
• Output - This can drive a maximum load of 50V DC at 100mA directly or heavier
loads by connecting additional relay circuitry. If the output is used with an exter-
nal relay, a diode must be connected in parallel with the load for protection
against any voltage transients.
I/O terminal connector block pinout:
Pin Function
1 Output A
2 Output B
3 Digital Input 1
4 Digital Input 2
5 RS-485/422-A
(non-inverting)
6 RS-485/422-B
(inverting)
7 GND
Description
On the external device output terminals (A and B), there is no distinction between positive and nega-
tive (+ and -). The terminals use a photocoupler and are electrically isolated from the other internal
circuitry.
The maximum load should not exceed 100mA and the maximum voltage should be not more than 50V
DC. Note: Connecting AC to the output will damage the unit.
Connect to GND to activate, or leave floating (or unconnected) to deactivate.
A half-duplex RS-485 interface for controlling auxiliary equipment.
Ground.