Engineering Safety systems specialist Hima-Sella has, under a circa £1.75m contract, commenced work on a site-wide PLC upgrade programme for a major UK refinery. This follows the customer’s formal acceptance of Hima-Sella’s Remote I/O and Network box designs, to be used for the programme.

At the site, a HIMA HIMax unit will act as a combined Data Concentrator and large Programmable Logic Controller (PLC), communicating with around 100 network boxes distributed over three fibre-optic control loops. Each Network box will then interface with up to 12 Remote I/O boxes, which in turn will have 25 channels for physically interfacing with motorised valves, switches, sensors and other hardware.

Tags: Hima-Sella