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6ES5928-3UB21
Siemens Simatic S5 CPU928 Processor Module

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2 year warranty 2 year warranty*

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*Manufacturer's warranty does not apply

Simatic S5 CPU928 Processor Module
Description

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Originally described as the most powerful multiprocessor unit for process automation, the Siemens 6ES5928-3UB21 was a slot in CPU 928B module for the Simatic S5-135U range of programmable logic controllers.  Sadly the unit is now obsolete and no longer fully supported by Siemens. Thankfully, Northern Industrial can still provide new and refurbished CPU 928B module as well as a high quality repair service.

The CPU 928B module was particularly well suited to open and closed loop control, signalling, monitoring and basic tasks like logging. The high performance capabilities of the 6ES5 928-3UB21 resulted in the module being installed in medium to extremely large control systems, complex plant automation system and detailed process supervision applications.

Common applications included

  • Bottling plants, packaging machines and automotive industry: Mainly tasks requiring fast bit and word oriented processing and fast reaction times. i.e. extremely fast open and closed loop controls
  • Process and plant engineering:  Tasks requiring an extremely high storage capacity and fast access time
  • Production lines: Tasks that required fast communication with other CPUs installed in the PLC and operating in the multiprocessor mode and with CP modules.


Programming and Backing up the CPU 928B

At Northern Industrial we always recommend that you keep a secure backup of your PLC program in case the worst happens.  To extract, test or commision a user program on the 6ES5928-3UB21 you are going to need a copy of STEP 5 programming software, a programming cable and a PC running DOS or Windows XP.  Due to the age of the software, it can be difficult to acquire the program and to find a suitable PC.  If you are unsure about using STEP 5, then don’t worry. We’ve got factory trained engineers that are able to come out onsite and extract or modify your 6ES5928-3UB21 program.


Operation Modes Available

Like the majority of modern PLC CPUs, the 6ES5928-3UB21 provided three main modes of operation

1. Cyclic processing: The same operations are repeated  in an endless cycle

2. Time Controlled Processing: Processes requiring control signals at constant internvals such as critical monitoring functions on a production line

3. Interrupt driven processing:  The CPU reacts to a particular process driven signal for example a safe stop switch


PDFs

el Espec

Las especificaciones siguientes se aplican a este producto

ManufacturerSiemens
Alternative Partnumber6ES5 928-3UB21
Range typeProcessor Module
RangeSimatic S5
PDFs

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Northern Industrial We’ve come a long way since our small workshop in the 90s.
Northern Industrial Microsoft did a story on us after we were the first business in the whole of the UK to install Windows 2000 server.
Northern Industrial Back in the early 2000s we had a small group of engineers compared to over 40 today.
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Northern Industrial Celebrating our 40th birthday in 2018 with John (centre) who started Northern Industrial back in 1978!