Alarm Input Port; Alarm Output Port - Dahua HCVR5204A Series User Manual

right:
NO1 C1，
NO2 C2，
NO3 C3，
NO4 C4,
NO5 C5 NC5
CTRL 12V
+12V
485 A/B
T+,T-,R+,R-

3.6.2 Alarm Input Port

Please refer to the following sheet for more information.

Grounding alarm inputs. Normal open or Normal close type)

Please parallel connect COM end and GND end of the alarm detector (Provide
external power to the alarm detector).

Please parallel connect the Ground of the DVR and the ground of the alarm detector.

Please connect the NC port of the alarm sensor to the DVR alarm input(ALARM)

Use the same ground with that of DVR if you use external power to the alarm device.

3.6.3 Alarm Output Port


Provide external power to external alarm device.

To avoid overloading, please read the following relay parameters sheet carefully.
NO5 C5 NC5 is a group of NO/NC activation output (on/off button)
Control power output. For external alarm, you need to close the
device power to cancel the alarm.
It is external power input. Need the peripheral equipment to provide
+12V power (below 1A).
Earth cable.
485 communication port. They are used to control devices such as
decoder.
They are four-wire double duplex RS485 port
T+ T-: output wire
R+ R-: input wire
Figure 3-9
66