Vesda VHX-0310

Vesda VHX-0310 PC Link HLI Open Protocol Master / Slave

A VESDA High Level Interface (HLI) enables connection between a VESDAnet and configuration and monitoring platforms. Two main models are available:

1) Sliding Windows HLI, which enables communication between a VESDAnet and configuration and monitoring software packages Xtralis VSC and Xtralis VSM4 and

2) Open Protocol HLI, which integrates a VESDAnet to third-party software packages, building management systems (BMSs) and fire alarm control panels (FACPs).

These HLIs are available in a plastic portable housing, which can be used in multiple sites, and a fixed wall-mounted configuration to provide a permanent connection in a convenient location at one site.

In the master-slave model, the host supervises the communications link between itself and the HLI (slave) by regularly polling the HLI to determine whether there has been a change in the status of a detector on VESDAnet. In response to polling by the host, the HLI generates a single response which is sent back to the host.

In this way, no unsolicited messages are sent from the HLI to the host. Depending on the polling strategy adopted, the Master/ Slave Open Protocol HLI can report any and all fire alarms within a few seconds of a detector going into alarm. Exact performance is dependent on the polling strategy adopted.

Key Features

Direct access and monitoring of VESDAnet system
Seamless data transfer
Easily configured using Xtralis configuring and monitoring software packages
Information Available

Detector Type (VLC, VLS, VLP, VLF).
Alarm status (Alert, Action, Fire1 & Fire2).
Fault Status (System, Zone, Urgent, Power, Network, Flow, Filter).
Status (Isolated, Normalizing, AutoLearn, Scanning).
Display info (Alarm thresholds, Location name).
Display update (Smoke level, Alarm & Fault status).
Fault details (list of active fault codes).
Fault strings (ASCII strings to describe each fault code).
Detector controls (Reset, Isolate, Silence, Test, Scan or Normalize2).
Configuration of Day / Night alarm thresholds2