Excitation upgrade for 750 hp synchronous generator

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UPMICHIGAN

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Location
Michigan
Has anyone had any experience with plc based excitation controller. I have received two quotes for the excitation upgrade. One was for a basler Dec's 250, the other was a plc based controller. The plc based controller worries me somewhat because it is not typical. Since the plc is not capable of processing the external I/O the firm is required to supply transducers and modules to make it work. The controller is composed of over 40 parts by different manufacturers when the dedicated controller is 1 part on a printed circuit board. The company uses this as a selling point citing it's modular design and over the counter parts. Does anyone have experience with this type of design?
 
iceworm

iceworm

Curmudgeon still using printed IEEE Color Books
Location
North of the 65 parallel
Occupation
EE (Field - as little design as possible)
You mean like an AB 1407-CGCM for a PLC type compared to Basler DEC250N?

I like the Basler 250N. You still end up with a PCL for tying into the company SCADA.
 
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