Axis Q1755-E Guide D'installation page 19

AXIS Q1755-E Installation Guide
I/O terminal connector - Used in applications for e.g. motion detection, event
triggering, time lapse recording and alarm notifications. In addition to an auxiliary
power and a GND pin, the AXIS Q1755-E has 2 pins that can be configured as
either input or output. These pins provide the interface to:
• Transistor output - For connecting external devices such as relays and
LEDs. Connected devices can be activated by AXIS VAPIX API, output but-
tons on the Live View page or by an Event Type. The output will show as active (shown
under Event Configuration > Port Status) if the alarm device is activated.
• Digital input - An alarm input for connecting devices that can toggle between an open and
closed circuit, for example: PIRs, door/window contacts, glass break detectors, etc. When a
signal is received the state changes and the input becomes active (shown under Event
Configuration > Port Status.)
Note:
The I/O connector on AXIS Q1755-E is connected to the housing electronics at delivery and
will trigger an input port event to indicate a fan or heater error when activated. Please refer
to the User's Manual User's Manual, available on the CD provided with this product, or from
www.axis.com, for information on how to set up an event.
Function Pin
GND 1
3.3V DC 2
Power
Configurable 3 - 4
(Input or
Output)
Notes
Ground
Can be used to power auxiliary equipment.
Note: This pin can only be used as power out.
Digital input - Connect to GND to activate, or leave
floating (or unconnected) to deactivate.
Note: Connected to housing electronics at delivery.
Digital output - Uses an open-drain NFET transistor
with the source connected to GND. If used with an
external relay, a diode must be connected in parallel
with the load, for protection against voltage
transients.
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I/O
4 3 2 1
Specifications
Max load = 250mA
Min input = - 40V DC
Max input = + 40V DC
Max load = 100mA
Max voltage = + 40V DC