Two PID controllers in a quarter-DIN package
27 July 2014
CD Automation is now distributing Lumel’s RE92 temperature and process controller, which is capable of independently controlling two loads, or two physical values on one load.
The RE92 is a 1/4 DIN (96x96mm) controller with two channels, providing two PID controllers in one space-saving package. As a standard, Lumel’s RE92 has six relay outputs, with SSR, analogue or digital as options, as well as three digital inputs.
Its modern control functions include independent dual loop, an innovative SMART PID algorithm with auto-tuning function, four sets of PID parameters and an additional set for cooling, as well as six types of alarm with programmable hysteresis and memory.
The user-friendly interface has a 2.5in full-colour graphic screen with luminosity control. The menu is available in English and Polish and the password-protected regulator access allows four users, with three access levels. Panel sealing is IP65.
The RE92 can be programmed using Lumel’s LPCon software, available for download from the company website. This allows the user to save the configuration to file and fast copy the settings to other RE92s, saving both time and maintenance costs.
The dual loop controller can take 20 internal programs (ten for each channel), and 15 units per program. It can signal up to six events per unit and select PID parameters for any unit.
The RE92 also allows for digital communication, with RS485 as a standard and Ethernet as an option. RS485 offers data transmission speeds of 35Mb/s up to 10m and 10 kb/s at 1,200m. Because the standard uses a differential balanced line, it can span large distances of up to 1,200m and resists electromagnetic interference, from motors and welding equipment for instance.
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