This Pertronic Modbus interface unit connects a Protectowire Fibre System 8000 linear heat detection system (LHD) with an F220 fire system.

The interface connects to the fire panel's RS-485 bus and communicates with the LHD via Modbus. It can be mounted inside the fire panel, or at a remote location.

This interface utilises the fire panel's loop emulation capability. Each zone on the LHD cable is mapped to a device on an emulated analogue addressable loop.

The Modbus connection is galvanically isolated from the fire panel’s RS-485 bus.

Features

• Compatible with Pertronic F220 fire panels
• Functions as Modbus master device
• Modbus connection configurable RS-232 or RS-485, 300 bit/s to 115,200 bit/s
• Supports Modbus TCP when connected to a Modbus Serial to Modbus TCP Gateway
• Emulates up to four analogue addressable loops. (Note that the total number of actual and emulated loops cannot exceed the panel’s maximum loop capacity)
• Supports up to 100 fibre-optic LHD detection zones per emulated loop (maximum 4 x 100)
• Each zone on the LHD cable is mapped to a device on an emulated analogue addressable loop
• Each emulated heat detector can report pre-alarm and fibre break as well as alarm signals
• Optional fault supervision between the fibre-optic LHD interface and fire panel
• Configurable with a PC running a terminal emulation program via USB mini-B cable
• On-board LEDs provide diagnostic information
• Electrically isolated from the fire panel’s RS-485 bus
• Also compatible with F120A fire panels with v5.0 or later firmware