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•
Please parallel connect the ground of the DVR (WITHOUT HDD) and the ground of the alarm
detector.
•
Please connect the NC port of the alarm sensor to the DVR (WITHOUT HDD) alarm input
(ALARM).
•
Use the same ground with that of DVR (WITHOUT HDD) if you use external power to the
alarm device.
2.5.7. Alarm Output Port Description
•
Provide external power to external alarm device.
•
To avoid overloading, please read the following relay parameters sheet carefully.
•
RS485 A/B cable is for A/B of the PTZ decoder.
•
T+, T-, R+, R- are four-wire double duplex RS485 port.
T+ T- : Output wire
R+ R- : Input Wire
2.5.8. Alarm output Relay terminal parameters
Model: JRC-27F
Shock material
Ratings
(Resistive load)
Insulation
Surge voltage
Opening time
Turn-off time
Lifetime
Work environment
Silver
Rated switching capacity
Maximum switching power
Maximum switching voltage
Maximum switching current
between the same polarity Contacts
between different polarity Contacts
Between coil and contacts
between the same polarity Contacts
3ms max
3ms max
Machinery
50×106 MIN（3Hz)
Electrical
200×103 MIN (0.5Hz)
-40~+70℃
30VDC 2A, 125VAC 1A
125VA 160W
250VAC, 220VDC
1A
1000VAC 1 minute
1000VAC 1 minute
1000VAC 1 minute
1500VAC (10×160us)
8
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