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What is a glass tempering furnace control system comprised of?

Source: LandGlass  Attention: 652  Published: 2017-09-21

What is a glass tempering furnace control system comprised of? 

A tempering furnace control system is comprised of a host computer and a slave computer.  The host computer adopts either an internationally renowned brand IPC or TP1200 made by Siemens A&D Group. With a user-friendly operating interface, the system offers high reliability and strong anti-interference. The slave computer is powered by SIMATIC S7-1500.  Its high electromagnetic compatibility has very high industrial adaptability with high resistance to shock and vibrations, allowing ambient temperature up to 60 ℃.

Mounted on the work bench, the display screen of TP1200 provides user-friendly human-machine interface with following pages:  Help, Process Monitoring, Temperature Profile, Process Parameters, Warning Log, and Equipment Maintenance (input test page, output test page, and four analog test pages), as well as read/write feature for system parameters, system auto-control, stand-alone operating system debugging, self-diagnosis, and on-screen alerts.  

A Glass tempering furnace control system is primarily comprised of the following sub-systems: 

1. Transmission control system is a continuous process consisting of loading, heating, cooling, and unloading. The parameters for the transmission process vary with glass thickness. The entire process is automatically controlled by PLC of the glass tempering furnace. The status of the process can be monitored through the terminal display screen. 

2. Temperature is controlled by a dedicated Siemens temperature control module.  Each heating zone has its thermocouple. Temperature is set on the operating terminal based on the thickness and types of glass.  The temperature control module will calculate the controlling signal with the measured temperature and transmit it to a solid state relay to regulate the output power of the heating elements.  The system adopts an advanced algorithm for automatic temperature optimization, to achieve precise temperature control through auto-tuning PID and fuzzy control technology.