Where DC Drives Are Used In Industry
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Where Are DC Drives Used In Industry? This guide covers most of the industries and applications where DC drives are used. You will find it a useful reference tool when you are considering: • • • Drive types that may be used in individual applications. Industries where DC drives are used Some indication of the complexity of a particular application If you know of any other applications where DC drives are used, we’d be happy to include them. Send your comments and suggestions to info@sprint-electric.com Industry Type Useful information Metal Industries. Rolling Mill Strip Mill Slitters & Perforators Wind / Unwind Tube Mill Cast Tube spinner Machine Tool Spindle Machine Tool Table Wire Drawing ü Check for shock loads, and if field weakening is required. Check if field weakening is required. Check constant power range, may need a larger drive and motor. Check reel build up ratio and speed / tension range. Motor/drive needs sizing to suit. Requires Winder card. May be a pair of drives linked by process, system knowledge on load sharing required. Straight forward speed control application. Always four quadrant regenative drive. Additional signals in/out may be required through add on board. Straight forward speed control Check if drive requires a position signal. Usually a series of drives electronically linked. Each drive runs faster than the previous one. Control of tension usually required.

Industry Type Useful information Plastics Extruders Sheet Line reeler Banbury mixer ü ü ü Straight forward speed control, Straight forward speed control. Zero speed signal usually required as an interlock. Check reel build up ratio and speed range. Very thin plastic sheet can be difficult to control. Requires system knowledge. Straight forward speed control when linked to extruder speed. Some applications require torque control. Simple speed control, but nearly always has a duty cycle which will increase the size of the drive/motor. Straight forward speed control. Chemical Straight forward...

Industry Type Useful information Concrete Pipe Man’f Pipe spinner Centrifugal Fans Rootes Blowers Straight forward speed control. Usually four quadrant regenative drive. Check max starting torque. Straight forward speed control. Straight forward speed control. Usually straight forward speed control. Two or four quadrant. Straight forward speed control. Straight forward speed control. Straight forward speed control. Ring frame spinners Carding machine Looms Pumps Centrifugal Pumps Paper & Tissue Paper machines Printing Presses Folders, Unwind & Rewind Winders & Reelers ü Large integrated...

Industry Type Useful information Test rigs Various type of rigs Usually four quadrant regenative drive. System knowledge is required. Straight forward speed control, although some fans hit resonance over speed range. Requires a speed “jump” in control signal. Bunchers & Stranders Take up & Unwind stands Simple speed control, but starting and overload characteristics need to be looked at. Four quadrant regenerative drive usually linked to line speed. Additional process cards may be required. Four quadrant regenerative drive usually linked to line speed, some control of tension is required....