VESDA VHX-0300 PC Link High Level Interface (Open Protocol)

The Xtralis VHX-0300 is the VESDA Open Protocol High Level Interface (HLI), peer-to-peer version. It links a VESDAnet network of VESDA detectors to a host such as PC monitoring software, a building management system (BMS) or a fire alarm control panel (FACP). In the peer-to-peer model the host polls the HLI for information, while the HLI can also send unsolicited messages to the host.

Key features

• Peer-to-peer communication: both the HLI and the host supervise the link; the host can request and receive multiple messages
• Reports detector type (VLC, VLS, VLP, VLF) and supports Mimic Mode for VLP/VLC/VLS
• Alarm status (Alert, Action, Fire 1 and Fire 2) and fault status (system, zone, urgent, power, network, flow, filter)
• Detector status (isolated, normalising, AutoLearn, scanning), display information and smoke level updates
• Fault details with ASCII fault strings, plus detector controls (reset, isolate, silence, test, scan)
• Direct access to, and monitoring of, the VESDAnet system
• Seamless data transfer
• Easily configured using Xtralis configuration and monitoring software
• VESDAnet is a fault-tolerant, bi-directional protocol: if one direction of communication fails, messages are sent the other way
• Recommended for secondary monitoring; also suitable for primary reporting when integrated and approved/listed with the relevant fire panel

Technical specifications

• Part number: VHX-0300 (Open Protocol HLI, peer-to-peer)
• Supply voltage: 24 VDC
• Current consumption: 70 mA (quiescent); power 1.68 W
• Dimensions: 188 mm x 98 mm x 40 mm
• Weight: 0.4 kg
• Detectors supported: up to 40
• Modem support: not available
• Master-slave version: VHX-0310

What's in the box

• VESDAlink RS-232 9-way serial cable (male–female)
• VESDAnet RS-485 15-way cable (male–female)