Copyright © 2008 Rockwell Automation, Inc. All rights reserved. Insert Photo Here RDD-Series...

Copyright © 2008 Rockwell Automation, Inc. All rights reserved.

Insert Photo Here

RDD-Series (Bulletin RDB) Bearingless Direct Drive Rotary Servo Motors

Copyright © 2008 Rockwell Automation, Inc. All rights reserved. 2

Direct Drive Motors by any other name . . .

. . . still mean improved performance and greater efficiency for your machine


What is a Direct Drive Motor?

Direct Drive Motor:

Any motor whose design is specifically intended to allow for direct-coupling to the load, thus improving system performance and efficiency by

eliminating the need for additional mechanical transmission components.


Realize the benefits of a Mechatronic Solution

• The RDD-Series Rotary Direct Drive Motors are part of the Rockwell Automation mechatronic solutions portfolio.

• Mechatronic design is a collaborative venture between mechanical, electrical, and control design engineers – the outcome is a machine design optimized for high performance.

• The Rockwell Automation mechatronics offering includes: virtual design tools, products and expertise.

Mechatronic products like the RDD-Series Motors provide tighter Mechatronic products like the RDD-Series Motors provide tighter coupling between the control and machine function, and help eliminate coupling between the control and machine function, and help eliminate

backlash, compliance, noise and energy losses.backlash, compliance, noise and energy losses.

Mechatronic products like the RDD-Series Motors provide tighter Mechatronic products like the RDD-Series Motors provide tighter coupling between the control and machine function, and help eliminate coupling between the control and machine function, and help eliminate

backlash, compliance, noise and energy losses.backlash, compliance, noise and energy losses.


What are the benefits of Direct Drive Motors?

• Increased Machine Throughput– Direct Coupling of Motor to Load Eliminates Compliance and Backlash

• Better control of the load• More responsive system• Optimal system performance

• Increased Customer Product Quality– Significant Improvement in System Accuracy

• Lower Energy Consumption– Reduced Mechanical Losses

• Friction• Heat• Noise

– No Inertia Matching• “Right-size” the power for the application

Key Benefit: Increased System Performance and EfficiencyKey Benefit: Increased System Performance and EfficiencyKey Benefit: Increased System Performance and EfficiencyKey Benefit: Increased System Performance and Efficiency


What are the benefits of Direct Drive Motors?

• Simplified Mechanics– Eliminates Components that Wear over Time

• Stable long-term accuracy• Higher reliability• Consistent quality

– Reduced Maintenance (lubrication, belt tensioning, tuning, etc.)• Increased productivity• Reduced scrap

– Lower Overall Part Count• Lower purchasing burden• Faster assembly• Reduced spare parts inventory• Smaller machine footprint

• Reduced Commissioning Time– Simplified Tuning

Key Benefits: Increased System Reliability, Lower Total Cost of OwnershipKey Benefits: Increased System Reliability, Lower Total Cost of OwnershipKey Benefits: Increased System Reliability, Lower Total Cost of OwnershipKey Benefits: Increased System Reliability, Lower Total Cost of Ownership


Rockwell Automation Direct Drive - Benefits

• Integrated Architecture– Single source solution– Single programming environment– Smart Motor Technology (“plug-n-play”)

• Motion Analyzer Integration– Simplified / optimized sizing and selection

• Old “rules of thumb” not sufficient to get full utilization of products

– Mechatronics Capability• Import 3D CAD files (SolidWorks)• Mechanical animation and simulation• Tuning simulation

– Database with Drive Compatibilities• Catalog numbers• Speed / torque curves


Direct Drive Motors vs. Traditional Mechanics

CriteriaBelt or Chain

Spur Gearbo

x

Planetary

Gearbox

Direct Drive

Comments

Upfront Engineering (Time and Cost)

RDD motors designed into machine (traditional motors bolted onto machine)

Acceleration Lower system inertia = faster acceleration

Compliance & Backlash Fewer mechanical components = less

backlash & compliance = better system accuracy

Inertia Mismatch Inertia ratio irrelevant when backlash and compliance are removed

Tuning Reducing / eliminating backlash and compliance greatly simplifies tuning

Power Requirement Lower friction / heat / noise = higher system

efficiency = reduced power requirements

Reliability Eliminating mechanical transmission components = reduced maintenance and

fewer spare parts


Your application can benefit if . . . .

• Performance Requirements Exceed Capabilities of Traditional Solution– “Just can’t get there from here” – Direct Drive motors can help improve performance

• Chronic Mechanical Maintenance Issues - Direct Drive motors can help reduce downtime

• Gearbox Used for Inertia Matching– Results in oversized motor (excessive torque relative to application requirement)– Higher speed motor = higher current = larger drive = higher system cost

• Tight Space Constraints– Eliminating parts reduces space requirements


RDD-Series (Bulletin RDB) – Product Overview

Bearingless Rotor• Optimized for Applications where Load Already Supported by Bearings

• Greatly Simplifies Motor Installation

Feedback• Heidenhain High Resolution

Absolute Encoders• 2048 Sin / Cos Periods per

Revolution

Female Shaft Interface• Large Diameter for Rigid

Connection of Motor to Load• Eliminates Backlash /

Compliance

Windings• Optimized for use with latest Kinetix

6000 family and Kinetix 7000 Servo Drives

• Low, Medium and High Speed Options

Environmental Protection• IP65 (Blind Bore)

• IP64 (Through Bore)

Connectors• DIN-Style

• Use 2090 (MP-Series) Cables


Semi-conConverting

Automotive (tire building)Print

Robotics & Indexing

RDD-Series (Bulletin RDB) – Power Range

5,000 Nm500 Nm50 Nm5 Nm

Continuous Torque (Nm)

Low Speed Windings

5 Nm – 400 Nm

Low Speed WindingsMedium Speed Windings

High Speed Windings

5 Nm – 500 Nm

Indu

strie

s

R

DB

- B

earin

gles

s

RD

H -

Hou

sed


Kinetix Family of Rotary Servo Motors

1000 Nm

Vol

tage

23

0 Vo

lts

40

0 /

460

Volts

1 Nm0.1 Nm 10 Nm 100 Nm

TL-Series

MP-Series Low Inertia

Continuous Torque

Low Inertia

Medium InertiaF-Series

1326AB

HPK-Series


RDB

Growing Kinetix Family of Rotary Servo Motors

1000 Nm

Vol

tage

23

0 Vo

lts

40

0 /

460

Volts

1 Nm0.1 Nm 10 Nm 100 Nm

TL-Series

MP-Series Low Inertia

Continuous Torque

Low Inertia

Medium Inertia

Direct Drive

MP-Series Medium Inertia

* Future Product

RDH * Frameless *


RDD-Series (Bulletin RDB) - Summary

• Direct Drive Rotary Servo Motors– Increased performance, efficiency,

reliability– Decreased Total Cost of Ownership

• Applications– Performance optimization– High inertial loads– High Power + High Performance– Tight space constraints– Eliminate chronic maintenance issues

• Configurations– Bearingless (RDB)– Housed (RDH)– Frameless (Future)


RDD-Series (Bulletin RDB) - Contact Information

• Rockwell Automation Sales Contact– David Hansen– (952) 942-3757

• Local Distributor Contact– Brandon Bernier– (402) 502-8153

How Can Your Machine Benefit from Direct Drive?

(Distributor logo here)

Copyright © 2008 Rockwell Automation, Inc. All rights reserved. Insert Photo Here RDD-Series...

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