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RDD-Series Rotary Direct Drive Bearingless
Motors
Catalog Numbers RDB-B2901, RDB-B2902, RDB-B2903,
RDB-B4101, RDB-B4102, RDB-B4103
Topic
About the Direct Drive Bearingless Motors
RDD-Series direct drive motors feature single-turn or multi-turn high resolution
encoders. These bearingless housed motors provide a compact design for direct
drive applications.
Installation Instructions
Page
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Table of Contents
Related Manuals for Allen-Bradley Rockwell Automation RDD Series
Summary of Contents for Allen-Bradley Rockwell Automation RDD Series
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Page 1: Table Of Contents
Installation Instructions RDD-Series Rotary Direct Drive Bearingless Motors Catalog Numbers RDB-B2901, RDB-B2902, RDB-B2903, RDB-B4101, RDB-B4102, RDB-B4103 Topic Page Important User Information Catalog Number Explanation Before You Begin Install the Motor Remove the Motor Connector Data Product Dimensions Specifications Additional Resources About the Direct Drive Bearingless Motors RDD-Series direct drive motors feature single-turn or multi-turn high resolution encoders. -
Page 2: Important User Information
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls, publication SGI-1.1, is available from your local Rockwell Automation sales office or online at http://literature.rockwellautomation.com describes some important differences between solid state equipment and hard-wired electromechanical devices. -
Page 3: Catalog Number Explanation
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Catalog Number Explanation R DB - B 410 3 F - 7 B 7 2 AA FACTORY DESIGNATED OPTIONS = Standard BRAKE = No Brake CONNECTORS = Circular, Right Angle, Feedback 180° Rotatable ENCLOSURE/SHAFT = IP65 Housing/Blind Bore = IP64 Housing/Thru Bore... -
Page 4: Before You Begin
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Before You Begin Remove all packing material, wedges, and braces from within and around the item. After unpacking, verify the nameplate catalog number against the purchase order. 1. Remove the motor carefully from its shipping container. 2. - Page 5 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Required Tools These tools are needed to install this product. Tools Required for Installation Value Hex bit, 150 mm (6 in.) minimum length 6 mm Torque wrench Capable of applying at least 65 N•m (50 lb•ft) Screwdriver Phillips #2 Micrometer...
- Page 6 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Prolonging Motor Life Thoughtful design and proper maintenance can increase the life of this motor. Follow these guidelines to maximize the life of the motor: • Always provide a drip loop in each cable to carry liquids away from the connection to the motor.
- Page 7 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Build and Route Cables Knowledgeable cable routing and careful cable construction improves system performance. Follow these guidelines to build and install cables: • Keep wire lengths as short as physically possible. • Route noise sensitive wiring (encoder, serial, I/O) away from input power and motor power wiring.
- Page 8 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Ground the Shielded Signal Wires within a Power Cable Always ground the shield on any signal wires inside a power cable. Connecting this shield to chassis ground reduces the potential for voltage inductance and EMI. If any shield on a power cable is not grounded, high voltage can be present on that SHOCK HAZARD shield.
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Page 9: Install The Motor
Do not attempt to open or modify this motor. ATTENTION Only an authorized Allen-Bradley repair center shall service this item. Refer to Rockwell Automation Support for assistance to locate the nearest repair center. Failure to observe safety precautions could result in personal injury or damage to equipment. - Page 10 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Preparing the Motor for Installation Follow these steps to prepare a motor for installation. 1. Verify sufficient clearance, heatsink mass, and air flow for the motor so it stays within the operating temperature range of 0…40 °C (32…104 °F). Do not enclose the motor unless cooling air is forced across the motor, and keep other heat producing devices away from the motor.
- Page 11 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Verify Machine Mounting Dimensions Verify proper fit of the motor to the machine mount by measuring the following machine mounting dimensions: 1. Verify these dimensions are within the measurement range in the tables: •...
- Page 12 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions RDB-B2901, RDB-B2902, RDB-B2903 Machine Mounting Dimensions Attribute Value Pilot Diameter 232.92…232.96 mm (9.170…9.172 in.) Shaft Diameter, Small 59.988…59.999 mm (2.3617…2.3622 in.) Shaft Diameter, Large 69.988…69.999 mm (2.7554…2.7559 in.) Shaft Length, Small RDB-Bxxx1 43.81…44.07 mm (1.725…1.735 in.) RDB-Bxxx2 88.01…88.27 mm (3.465…3.475 in.)
- Page 13 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Mount the Motor Follow these steps to install a motor on the machine. 1. Insert the shaft key (provided) into the keyway of the machine shaft. Position the point on the shaft key in the direction of the motor, and then fully seat the key in the slot.
- Page 14 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Remove the End Cover Loosen each pan head screw with a Phillips screwdriver. • The RDB- motor has eight (8) screws to loosen. • The RDB- motor has eleven (11) screws to loosen. Do not attempt to remove the pan head screws from the cover.
- Page 15 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Tighten the Compression Coupling Follow these steps to secure the motor on the machine shaft. 1. Access the compression coupling bolts through the holes labeled A. • The RDB- motor has six (6) bolts to tighten. •...
- Page 16 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Remove and Secure the Shipping Hardware Follow these steps to remove the shipping bolts and set screws that prevent rotor movement during shipping. 1. Remove the shipping bolt from each hole B using a 6 mm hex bit, and store each bolt in the foam holder.
- Page 17 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Attach Motor Cables Follow these steps to attach the feedback and power/brake cables after the motor is mounted. Make sure that cables are installed and restrained to prevent uneven tension or flexing at ATTENTION the motor-to-cable connections.
- Page 18 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions 3. Carefully align the flat surface on the feedback or power/brake cable plug with the flat surface on the motor connector. The connector orientation shown is used to clearly show the alignment marker IMPORTANT on each cable socket.
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Page 19: Remove The Motor
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Remove the Motor Remove the motor from a machine as outlined below. Outer surfaces of a motor can reach high temperatures, 125 °C (275 °F), during operation. BURN HAZARD Take precautions to prevent accidental contact with hot surfaces. Consider motor surface temperature when selecting connections and cables to install on a motor. - Page 20 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Align the Rotor Follow these steps to align the rotor prior to removing the motor. 1. Use a flashlight to illuminate all holes (A, B and C) in the housing. To locate the holes, refer to the diagrams on page 2.
- Page 21 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Install the Set Screws and Shipping Bolts Follow these steps to install the set screws that prevent rotor movement during shipping. Do not use a thread lock material on the shipping hardware. ATTENTION 1.
- Page 22 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Loosen the Compression Coupling Bolts Follow these steps to loosen the compression coupling bolts prior to releasing the compression coupling from the shaft. 1. Access the compression coupling bolts through the holes labelled A. •...
- Page 23 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Release the Compression Coupling Follow these steps to loosen the respective motor from a machine shaft. The RDB-x4103 motor has a two-stage compression coupling. Release the first and second stages by performing both steps below, starting with the initial step that is common for all RDB-x290x or RDB-x410x motors.
- Page 24 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Replace the End Cover Follow these steps to align and secure the end cover in its original position. 1. Verify the O-ring is in position on the outside of the end cover. 2.
- Page 25 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Cover the Mounting End of the Motor Seal the opening in the motor end by performing the following steps. 1. Insert the protective paper sleeving around the rotor. 2. Cover the opening at the mounting end of the motor with the cardboard cover that came with the motor.
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Page 26: Connector Data
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Connector Data These tables identify the pinouts for feedback and power connectors. M23 Power M40 Power M23 EnDat Feedback Signal Name Signal Name Signal Name Sin+ Phase U Phase U Sin- Phase V Phase V Cos+ Phase W... -
Page 27: Product Dimensions
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Product Dimensions Key supplied with motor. Orient as shown. S = Dia. of Bolt Holes M = Dia. of Bolt Circle The dimensions in the table are for motors with a single-turn or a multi-turn encoder. - Page 28 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Motor Dimensions Motor Cat. No. Dimension mm (in.) RDB-B2901 RDB-B2902 RDB-B2903 RDB-B4101 RDB-B4102 RDB-B4103 182.3 256.3 AD max (7.18) (10.09) 59.988… 59.999 69.988…69.999 (2.3617… 2.3622) (2.7554…2.7559) 69.988…69.999 79.988…79.999 (2.7554…2.7559) (3.1491…3.1496) 43.94 88.14 124.71 40.39 83.82...
- Page 29 RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Motor Dimensions (cont.) Motor Catalog No. Dimension mm (in.) RDB-B2901 RDB-B2902 RDB-B2903 RDB-B4101 RDB-B4102 RDB-B4103 245.9 350.0 (9.68) (13.78) 16.8 38.6 (0.66) (1.52) 14.0 17.5 (0.551) (0.689) 13.5 17.8 (0.53) (0.70) Tolerance for this dimension is ±1.52 mm (±0.060 in.). Publication RDB-IN002A-EN-P —...
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Page 30: Specifications
RDD-Series Rotary Direct Drive Bearingless Motor Installation Instructions Specifications Attribute Value Temperature, operating 0…40 °C (32…104 °F) Temperature, storage -30…70 °C (-22…158 °F) Relative humidity, storage 5…95% noncondensing Atmosphere, storage Non-corrosive IP rating IP65 - dust tight, water jet The motor rating excludes any reduction in the rating resulting from cables, plugs, or connections with a lower rating, and an unsealed customer machine mounting interface. -
Page 31: Additional Resources
Information on connecting an EnDat Feedback Module to Instructions, publication 2090-IN020 interface the feedback signal from an RDD-Series motor with a Kinetix servo drive system. Allen-Bradley Industrial Automation Glossary, A glossary of industrial automation terms and publication AG-7.1 abbreviations. System Design for Control of Electrical Noise... - Page 32 Outside United States Please contact your local Rockwell Automation representative for the return procedure. Allen-Bradley, Kinetix, Rockwell Automation, RDD-Series, Rockwell Software, and TechConnect are trademarks of Rockwell Automation, Inc. Trademarks not belonging to Rockwell Automation are property of their respective companies.