Alarms And Relay Connections; Alarm Inputs; Configuring Supervised Alarms (Inputs 1 And 2); Configuring A Normally Open Supervised Alarm - Bosch VG4 Series Installation Manual

96 en | Alarms and Relay Connections
6

Alarms and Relay Connections

6.1

Alarm Inputs

The AutoDome provides seven alarm inputs. Each input can be activated by dry contact
devices such as pressure pads, passive infra-red detectors, door contacts, and similar
devices. The table below summarizes the size and distance wires.
Wire Size
AWG
22
18
Table 6.1 Alarm wire guide
You wire alarms either Normally Open (N.O.) or Normally Closed (N.C.), and must program the
alarm inputs N.O. (the default) or N.C. through the AutoDome main menu.
The AutoDome incorporates two (2) types of alarms: Non-supervised and Supervised. In
addition to transmitting an alarm condition, a supervised alarm also transmits a tamper
condition. Depending on how the alarm is configured, a short or a break in the alarm's circuit
can trigger the tamper signal.
6.2

Configuring Supervised Alarms (inputs 1 and 2)

To configure Alarm 1 or 2 (pin 5 or 6) for supervision, you must install a 2.2 K end-of-line
resistor in the circuit. Then, you program the alarms through the AutoDome main menu to
either Normally Open Supervised (N.O.S.) or Normally Closed Supervised (N.C.S.).
NOTICE! Only Alarms 1 and 2 (pins 5 or 6) can be configured for supervision. Once a
supervised alarm is programmed it does not need to be enabled to indicate a tamper
condition.
6.2.1

Configuring a Normally Open Supervised Alarm

1.
2.
F.01U.162.025 | 6.0 | 2010.03
Maximum Distance
mm feet meters
0.644 500 152.4
1.024 800 243.8
Install a 2.2 K end-of-line resistor in the alarm circuit.
Connect the alarm wires to input 1 or 2 (pin 5 or 6) and to the ground (pin 7) at the
AutoDome.
2.2K
Figure 6.1 N.O.S. - Normally Open Supervised Connections
1 Dry Contact
2 Alarm 1 or 2 only (Pin 5 or 6)
Installation Manual
3 Dome Connector
4 Ground (Pin 7)
VG4 Modular Camera Series
Bosch Security Systems, Inc.