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Product category: Mid-range and Large PLCs
News Release from: Vipa | Subject: FM355/R355
Edited by the Engineeringtalk Editorial Team on 09 December 2005

Temperature modules aid processing

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Vipa launches temperature control modules for direct use with Siemens S7-300 PLCs or with Vipa's System 300V; the four and eight channel modules have been developed with Gossen Metrawatt.

Vipa has launched temperature control modules for processing applications For direct use with Siemens S7-300 PLCs or with Vipa's System 300V, the four and eight channel modules have been developed with Gossen Metrawatt

The FM355/R355 range can be added to the S7-300 or 300V via the standard backplane bus.

Parameter set-up and configuration is by means of the 355Config software tool which allows programming from the main CPU with Simatic Manager or with Vipa's WinPLC7.

Configuration is also possible using the built in RS232 interface from a PC.

Parameter storage is held in the main CPU allowing ease of field replacement and system scalability.

With a sampling rate for all four or eight channels within 100ms, the dead-beat PDPI control algorithm used on the range was developed by Gossen Metrawatt and has been field-proven for critical temperature control applications.

Control loop set-up is optimised using auto-tuning.

Control parameters can be freely adjusted in-situ.

Information output from the FM355/R355 is via a choice of MPI interface (Vipa MP2I), Ethernet TCP/IP, Profibus-DP or Canopen protocol.

Online visualisation of cyclic data is available for various values and control variables such as heating current and alarm information as well as processed values such as setpoints, delay times, ramps and error diagnosis.

A data logger includes 3600 samplings for each channel including actual values and setpoints.

An alarm history allows the acquisition of 100 channel or device error status entries with time stamp, as well as output errors.

They come with or without actuator outputs making them suitable for actuator control over long distances.

Current/voltage or Thermocouple/Pt100 options are included, and versions are available with eight or 24 binary I/Os, including short-circuit detection.

These are freely assignable to controller states, functions and channels.

Other features include hot runner control compatibility, heating current monitoring with single or multi-phase summation current transformer and water cooling control with an algorithm for non-linear cooling effect caused by evaporation.

Cascaded, differential and switching control is also possible.

Applications include multi-channel temperature control for rubber and plastics processing (injection moulding, extrusion, blow moulding, hot-runner technology), semiconductor manufacturing processes, industrial and laboratory ovens, textile and packaging machines, climatic test cabinets, refrigerator and heater manufacturing, pharmaceuticals, chemicals, process engineering, food processing industry, wood and paper industries (fibre stock extrusion), glass and ceramics industry, temperature control devices and other thermal processes.

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