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VMAX IP Plus Second Generation Relay Wiring

VMAX® IP Plus™ Second Generation Relay Wiring


Affected Roles:  Administrator, Owner

Complexity:  Medium

Last Edit:  March 18, 2021


Sensors and Relays

The VMAX® IP Plus™ features Sensor In and Alarm Out relay options that can be utilized through physical RS-485 connections between the NVR and the relay points.

This article will outline an example relay setup that include a Sensor input and Alarm output.

**NOTE:  Relay (Alarm Out) contacts can stand up to 24V/1A.  In the event that it is connected to an external circuit that is over 24V/1A, issues may occur with the system.

Supported/Affected Devices:

  • DW VMAX® IP Plus™ Series

Relay Input/Output

External sensors can be connected directly to the Sensor In RS-485 ports at the rear of the NVR.  After making the connections, the Sensor In ports can be assigned to cameras and Relay outputs.

Sensor Setup (Input)

To set up a sensor with the VMAX® IP Plus™, open the Setup Menu and select Alarm.  Among the Alarm options, select Sensor.

The Sensor menu can be utilized to set up a Relay.  Configure the following:

  • No. – designates which Sensor In port at the back of the NVR is being configured.
  • ON/OFF – set to ON to enable the configuration.
  • Cam – select which camera channel will display as a pop-up as a result of the external sensor tripping.
  • Relay – select an Alarm Out port that the configuration will use for the relay setup.
  • Preset – set a PTZ camera to move to a preset position when the sensor is triggered (requires PTZ setup)
  • Dwell – set the recording period that will trigger when the sensor is activated.  During this period, the selected camera (Cam) will record if the recording Schedule includes a Relay mode.
  • Pre-Alarm – set an amount of time to delay before triggering the sensor and alarm.  The Pre-Alarm recording mode is always continuous and follows the recording speed that is set in the Record settings
  • Type – select the incoming sensor type as N/O (Normal Open) or N/C (Normal Close), depending on if the sensor circuit must be opened or closed to trigger

Relay Setup (Output)

Relay outputs can be used to trigger an external device such as a siren, light, and other options.  Below are a few examples of wired relays.

  • Relay Activates Light – In this example, when the relay is triggered by an external sensor, the relay will trigger, causing the light to turn on.  Only one power wire is switched with this example by using the COM (common) and N/O (normally open) connections of a relay

  • Alarm Output Terminals – In this example, the VMAX® IP Plus™ is connected to an external strobe light through its Alarm Out RS-485 ports.

Depending on how the wires are connected, the VMAX® IP Plus™ will act as a relay appropriately.

The port markings indicate:

    • A – Normally Open (N/O)
    • C – Common
    • B – Normally Closed (N/C)

As a result of the configuration below, when the relay is triggered, the circuit will close and feed power to the lightbulb.  With power now flowing to the external device, the VMAX® IP Plus™ will cause the strobe light to activate.

**NOTE:  If the Relay (Alarm Out) port contacts are connected to an external circuit that exceeds 24V/1A, issues with the system and/or hardware may occur.

  • 687
  • 19-Mar-2021