Clover Electronics CDR0460 Alarm Relay Connection, RS485 Connection, Description, Tatx+, Tbtx

MODEL: CDR1660 / CDR0860 / CDR0460 H.264 STAND-ALONE DVR USER MANUAL V 2.6

6.5. ALARM (RELAY) CONNECTION

If you want, you can install alarm on your DVR system. There is one alarm power switch, which is controlled by the DVR.

The ALARM OUTPUT is a relay contactor type and supports N.O.(Normal Open) and C.M.(Common). The Output capacity is DC 30W, AC 62.5VA. A higher capacity can cause system failure.

The switch is closed when a sensor is activated. Refer to the below diagram to understand the circuitry for the alarm installation.

* Connect the alarm power lines of the sensor as shown in the below diagram.

6.6. RS485 CONNECTION

If you want, you can connect PTZ cameras or external keyboard controller(to be recommended by the DVR maker). Connect “TA(or TX+, TRX+ etc.)” of the PTZ cameras or external keyboard controller to “TA” port of 485 ports of the DVR and “TB(or TX-, TRX-, etc.)” of the PTZ cameras or external keyboard controller to “TB” port of 485 ports of the DVR with cables.

No

1

2

	DESCRIPTION
TA(TX+)		RS485: Transmit data
TB(TX-)		RS485: Receive data

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