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250 volt DC feed cranes

1/31/2010 1:37 PM	Rate (0)
Slacker Posts: 9 Rating: (0)	I have several crane retrofits to quote that are feed from a 250vdc rail system with no 3 phase power available. Do we have a drive (Chopper) that can be used to control series wound DC motors for this application?
Slacker Posts: 9 Rating: (0)
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2/1/2010 10:01 AM	Rate (0)
miami Platinum Member Joined: 8/31/2005 Last visit: 12/16/2025 Posts: 2198 Rating: (331)	Hallo Slacker, The DC-Drives from Siemens are called SIMOREG and/or DC-Master (6RA70). Have a look on them at https://www.automation.siemens.com/ld/dc-stromrichter/index_76.html

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2/2/2010 1:29 PM	Rate (0)
Slacker Posts: 9 Rating: (0)	Thanks for the reply, the Simoreq will not work because only available power is 250vdc. I am looking for a solution that can accept the 250vdc and convert it to variable dc output to feed series wound dc motors for hoisting application.
Slacker Posts: 9 Rating: (0)
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8/4/2010 10:03 PM	Rate (0)
Marcel@Cranes Member Joined: 6/19/2008 Last visit: 8/11/2025 Posts: 8 Rating: (0)	Sorry. No DC/DC drives available at from A&D. Norway makes some special types for OG & MAS but never used for cranes.

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8/5/2010 6:45 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 11/23/2024 Posts: 8092 Rating: (884)	Slacker Thanks for the reply, the Simoreq will not work because only available power is 250vdc. I am looking for a solution that can accept the 250vdc and convert it to variable dc output to feed series wound dc motors for hoisting application. Can you provide us DC motors more details like current, DC voltage, minimum & max RPM, which is feed back back system.? At present how it is operated? DEEP.

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