High-performance components for a holistic solution
HGT stands for Hauptmodul Gebäudetechnik (Building Technology Master Module) and is an automation station that records individual software for a plant or part of a plant. The hardware is identical to the master modules of the Wurm FRIGOLINK systems, but the operating system is adapted specifically for the requirements of building technology. In coordination with tenants, operators, planners and system partners, the individual software is designed with graphic control structure editors, simulated and then transferred to the HGT. In addition to the master modules, input and output modules are required for complete automation, which are networked to the appropriate master modules via the CAN bus as so-called field modules.
HMU stands for Hauptmodul Uhr (Master Module Clock) – all the time functions related to building technology in the retail property are controlled with the HMU. The time signals are available to the other master modules via the communication bus.
METEOLINK is a development from Wurm for the use of special weather forecast data from WetterOnline. As Germany's main provider of weather information, WetterOnline regularly calculates weather forecast data precisely for each individual location of the stores equipped with Meteolink. These data are then sent to the Wurm server, which then transfers the data regularly and precisely to the relevant store computers (MULTIGATE, see below) in the stores. This early perparation for special climatic requirements enables proactive control of heating or cooling operations. Humidity control is also improved - it can supress or activate external air cooling on the basis of the predicted outside air humidity according to demand. Safety and comfort are increased with the help of Meteolink and forward-looking control strategies.
In addition to automation of the retail property, an essential task is the recording of all relevant consumption data. The PIC (Power Input Counter) records power input information converted into impulses and saves it at intervals of 15 minutes, hours, days and months. As a consequence, informative historical data are available at any time. A PIC-6 can process up to 6 types of consumption. Besides electrical work, also the amount of heat, gas, oil and water consumption can be recorded as measurands. Due to its many subtenants, our biggest project contains nearly 100 measuring circuits through a corresponding cascading of the PICs.
The MULTIGATE is the central communication unit and is connected with the communication buses of commercial refrigeration technology and building technology. This is where one of the crucial advantages of GTM in connection with Wurm refrigeration automation manifests itself: Although the bus systems are run by two completely different project subsections (and possibly have different owners), only one gateway is necessary for fault message transmission, remote diagnosis, the recording of historical data and also remote service. Regarding external communication, the MULTIGATE behaves like two separate gateways: building technology and refrigeration technology operatives may only view the data from their respective field of responsibility because of the allocation of rights. The operator, however, can evaluate the entire system from a superordinated position.