Signal NVR 2708 Manual de usuario descargar pdf (Pagina 10)

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The grounding of the power supply and the alarm sensor must be shared when used in external power

supply.

2.4.2 Alarm output port specification

1 channels alarm output. There is external power supply when using the external alarm equipment.

Please refer to the relay relevant parameters to avoid the overload that damages main machine.

2.4.3 Alarm output port relay parameters

Type：JRC-27F

Interface material

silver

rating

(resistance load)

Rating switch capacity

30VDC 2A, 125VAC

maximal switch power

125VA 160W

maximal switch voltage

250VAC, 220VDC

maximal switch current

isolation

Homo-polarity

1000VAC 1minute

Inhomo-polarity

1000VAC 1 minute

Interface and winding

1000VAC 1 minute

Surge voltage

Homo-polarity

1500VAC (10×160us)

Turn-on time

3ms max

Turn-off time

3ms max

longevity

mechanical

50×106 MIN（3Hz)

electric

200×103 MIN (0.5Hz)

Environment

-40~+70℃

2.5 Speed dome connections

1、Connect the 485 lines of the speed dome with the NVR 485 interface.

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Signal NVR 2708 Manual de usuario Pagina 10