Siemens SISTORE AX4 - Connecting Alarms; AI 1 to 4 (Alarm In); GND (Ground); ARI (Alarm Reset In)

Installation
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Siemens Building Technologies SISTORE AX4_EN.doc
Fire & Security Products 09.2004
2.8 Connecting Alarms
Fig. 9 Alarm Input connector strips.
NOTE:
To make connections on the Alarm Connector Strip, press and hold the button and insert the wire in
the hole below the button. After releasing the button, tug gently on the wire to make certain it is
connected. To disconnect a wire, press and hold the button above the wire and pull out the wire.
2.8.1 AI 1 to 4 (Alarm In)
You can use external devices to signal the DVR to react to events. Mechanical or
electrical switches can be wired to the AI (Alarm In) and GND (Ground) connectors.
The threshold voltage for NC (Normally Closed) is above 4.3V and should be
stable at least 0.5 seconds to be detected. For NO (Normally Open), the threshold
voltage is below 0.3V. See Chapter 3 — Configuration for configuring alarm input.
2.8.2 GND (Ground)
Connect the ground side of the Alarm input to the GND connector.
2.8.3 ARI (Alarm Reset In)
An external signal to the Alarm Reset In can be used to reset both the Alarm Out
signal and the DVR’s internal buzzer. Mechanical or electrical switches can be
wired to the ARI (Alarm Reset In) and GND (Ground) connectors. The threshold
voltage is below 0.3V and should be stable at least 0.5 seconds to be detected.
Connect the wires to the ARI (Alarm Reset In) and GND (Ground) connectors.
2.8.4 Alarm Out
Fig. 10 Alarm Output connector strips.
The DVR can activate external devices such as buzzers or lights. Mechanical or
electrical switches can be wired to the NC (Normally Closed) and C (Common)
connectors or NO (Normally Open) and C (Common) connectors. Permitted
current is up to 0.5 A for 125 VAC, 1 A for 30 VDC. See Chapter 3 —
Configuration for configuring alarm output.
2.9 Connecting to the RS-485 Port
Fig. 11 RS-485 Connector.
The DVR can be controlled remotely by an external device or control system, such
as a control keyboard, using RS-485 half-duplex serial communications signals.
The RS-485 connector can also be used to control PTZ (pan, tilt, zoom) cameras.
Connect RX-/TX- and RX+/ TX+ of the control system to the TX-/RX- and TX+/RX+
(respectively) of the DVR. See Chapter 3 — Configuration and the PTZ camera or
remote controller manufacture’s manual for configuring the RS-485 connection.