Axis Communications user manual I/O Terminal Block, AXIS 225FD - Unit Connectors

AXIS 225FD - Unit Connectors 39

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 spe- cific 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	Description
1	Output A	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 electrically
2	Output B
		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.
3	Digital Input 1	Connect to GND to activate, or leave floating (or unconnected) to deactivate.
4	Digital Input 2
5	RS-485/422-A	A half-duplex RS-485 interface for controlling auxiliary equipment.
	(non-inverting)
6	RS-485/422-B
	(inverting)
7	GND	Ground.