Alarm Connection
NVR/Alarm Panel
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Alarm Connection
Alarm Port
The alarm port is shown as below. The following figure is based on the 78 series.
Icon | Function |
1～16 | ALARM1～ALARM16. The alarm becomes activated in the low level. |
NO1 C1，NO2 C2，NO3 C3，NO4 C4 | Four NO activation output groups. (On-off button). |
NO5 C5 NC5 | One NO/NC activation output group. (On-off button). |
CTRL 12V | Control power output. Disable power output when alarm is canceled. Current is 500mA. |
＋12V | Rated current output. Current is 500mA. |
GND | |
A/B | 485 communication port. They are used to control devices such as PTZ. Please parallel connect 120TΩ between A/B cables if there are too many PTZ decoders. |
Note
- Different models support different alarm input ports. Please refer to the specifications sheet for detailed information.
- Slight difference may be found on the alarm port layout.
Alarm input port
Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN 1～16) of the NVR. Connect the negative end (-) of the alarm input device to the ground end (
) of the NVR.
Note
- There are two alarm input types: NO/NC.
- When connect the ground port of the alarm device to the NVR, you can use any of the GND ports ().
- Connect the NC port of the alarm device to the alarm input port (ALARM) of the NVR.
- When there is peripheral power supplying for the alarm device, please make sure it is earthed with the NVR.
Alarm relay specifications
Model: | JRC-27F | |||
Material of the touch | Silver | |||
Rating（Resistance Load） | Rated switch capacity | 30VDC 2A, 125VAC 1A | ||
Maximum switch power | 125VA 160W | |||
Maximum switch voltage | 250VAC, 220VDC | |||
Maximum switch currency | 1A | |||
Insulation | Between touches with same polarity | 1000VAC 1minute | ||
Between touches with different polarity | 1000VAC 1minute | |||
Between touch and winding | 1000VAC 1minute | |||
Surge voltage | Between touches with same polarity | 1500V (10×160us) | ||
Length of open time | 3ms max | |||
Length of close time | 3ms max | |||
Longevity | Mechanical | 50×106 MIN (3Hz) | ||
Electrical | 200×103 MIN (0.5Hz) | |||
Temperature | -40℃ ~+70℃ | |||