Pelco C2953M-B manual Connecting Alarms, Supervised Alarms

Page 15

Connecting Alarms

The camera provides an alarm input for external signaling devices, such as door contacts or motion detectors. Both normally open and normally closed devices are supported.

Supervised Alarms

When an alarm is configured as a supervised alarm, the camera maintains a constant electrical current through the alarm circuit

(3.3 VDC, 1 ohm). If the alarm circuit length changes, due to an electrical short or a bypass, the voltage fluctuates from its normal state and activates an alarm.

NOTE: Install the 1-kohm resistor as close to the switch as possible.

Figure 10 illustrates the alarm and no alarm conditions of a supervised alarm input. Whether the alarm is normally closed or normally open, neither a cut nor a bypass can defeat these alarms.

	NORMALLY CLOSED			NORMALLY OPEN
NO ALARM	1 KΩ		NO ALARM	1 KΩ
GND		+V	GND
ALARM	1 KΩ		ALARM	1 KΩ
GND		+V	GND
ALARM	1 KΩ		ALARM	1 KΩ
GND		+V	GND
	CUT			CUT
ALARM	1 KΩ		ALARM	1 KΩ
GND		+V	GND
	BYPASS
				BYPASS

Figure 10. Supervised Alarm Conditions

Figure 11 illustrates the wiring configuration for supervised alarm inputs.

NORMALLY CLOSED

NORMALLY OPEN

A1

A1

1 KΩ

1 KΩ

+V

+V

+V

+V

Figure 11. Supervised Alarm Input Wiring

C2953M-B (10/09)

15

Image 15

Contents IXE Series Extended Platform Network Camera Contents Specifications C2953M-B 10/09 List of Illustrations Video Quality Caution Important NoticesLegal Notice Regulatory NoticesIntroduction BUILT-IN AnalyticsModels Getting Started Parts ListProduct Overview Camera Connections and FeaturesRemove Back Cover Product LabelPin InstallationC2953M-B 10/09 Service Cable CAT5 Cable WiringConnecting a Relay Device ALARM, RELAY, and 24 VAC ConnectorSingle Camera Wiring Multiple Camera WiringSupervised Alarms Connecting AlarmsAlarm Connections Camera Configuration Sequence OperationMinimum System Requirements Logging on to the Camera Accessing the IP CameraLive Video Live Video page Icons Selecting a Stream UnicastMulticast Displaying Video in the Multiscreen View Taking a SnapshotAccessing the Camera Menus SettingsGeneral Settings Time SettingsSystem Tab Changing the Device Name Configuring the Time SettingsRebooting the Camera Restoring ALL Camera DefaultsNetwork Tab General Network SettingsSSL Settings SSH SettingsTurning OFF Dhcp Turning on DhcpSelecting the Secure Sockets Layer Mode Generating a SELF-SIGNED Certificate Generating a Certificate RequestEnabling Secure Shell Imaging Tab Configuring the Orientation of the Scene Changing the Digital Processing Settings Selecting Auto Exposure Settings Day Night Settings on Selecting Manual Exposure Settings DAY Night Auto and Manual Modes DAY Night SettingsDAY Night Auto Mode DAY Night Manual ModeConfiguring Auto Focus Settings Configuring Manual Focus Settings Setting Tone MAP Options Selecting Auto White Balance Settings Selecting Manual White Balance Settings Streams Tab Video PresetsVideo Configuration Audio ConfigurationSelecting a Video Preset Configuration Configuring a Custom Video Stream Configuration Compression Standards GOP Structure Endura SigningRate Control ProfileSelecting the Audio Configuration Settings Users Users and Groups TabGroup GroupsCreating a NEW User Editing a UserDeleting a User Creating a NEW Group Editing a GroupDeleting a Group General Settings for Users and Groups Setting the Camera to NodeSetting the Camera to Mixed Sources Events TabHandlers Editing AN Event Source Creating AN Alarm Event SourceCreating a Timer Event Source Creating a System Event SourceCreating AN Event Handler Send Email Deleting AN Event SourceCreating AN Event Handler Upload Jpeg to FTP Server Creating AN Event Handler Write Jpeg to SD CardCreating AN Event Handler OPEN/CLOSE Relay Editing AN Event HandlerDeleting AN Event Handler Example Handler Filter Setup Log Off Menu Help MenuGeneral SpecificationsModels Required SystemElectrical MechanicalVideo Physical EnvironmentalProduct Warranty and Return Information