1. The document discusses StepSERVO technology, which uses closed loop servo control for 50-pole permanent magnet brushless DC motors, also known as step motors. 2. StepSERVO motors offer higher torque, acceleration, efficiency, and accuracy compared to traditional open loop stepper motors. They consume less power, run cooler, and are quieter. 3. Applied Motion Products offers a range of StepSERVO integrated motor products in NEMA frame sizes that provide improved performance over open loop steppers at a relatively low cost.

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StepSERVO Technology:
Bridging the gap between Cost Effective and
High Performance Motion Control

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q This webinar will be available afterwards at
www.designworldonline.com & email
q Q&A at the end of the presentation
q Hashtag for this webinar: #DWwebinar
Before We Start

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Miles Budimir
Senior Editor – Moderator
Design World
Eric Rice
Marketing Director
Applied Motion Products, Inc.
StepSERVO Technology:
Bridging the gap between Cost Effective and High Performance Motion Control
Meet your Speakers

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1978
Applied Motion Products, Inc. is founded in 1978 in California to
design, market and manufacture motion control solutions for the
automation industry.

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1978 1992
In 1992, Applied Motion designs and markets its first of many
standard stepper drives, the 2035 full/half step drive.

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1978
1994
1992
Shanghai Moons’ Electric is founded in 1994.

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1978
1994
19971992
In 1997, Shanghai Moons’ Electric begins manufacturing
stepper motors.

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1978
1994
1997 20071992
In 2007, Applied Motion and Moons’ form Shanghai AMP&MOONS
Automation (AMA), a joint venture dedicated to the development and
manufacture of motor drives and integrated motors.
AMA

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1978
1994
1997 20071992
Moons’ acquires Applied Motion Products in 2014 to combine the
strengths of all three companies into a
global automation solutions provider.
AMA
2014

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1978
1994
1997 20071992
Moons’ acquires Lin Engineering in 2015, adding to the strength of
Moons’ Industries globally.
AMA
2014
2015

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Moons’ Industries
Headquarters and
Manufacturing in
Shanghai, China
Moons’ Industries
Support center in
Milan, Italy
Moons’ Industries
Support center in
Chicago, USA
Applied Mo1on Products
Watsonville, CA, USA
Lin Engineering
Morgan Hill, CA, USA

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Auto-lamination Line Stator Coating Shaft Production Rotor Assembly
Final AssemblyMachining Centers
Produc'on capacity > 14 million step, servo and BLDC motors annually.

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The Value of Applied Motion Products
Our Sales and Technical
staff have an average of
23 years
of experience in
Motion Control.
Both at Applied Motion and these
other companies…

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The Value of Applied Motion Products
42 patents
30 patents
9 patents
3 patents
President, Don Macleod
Founder, Kenneth Kordik (ret.)
Chief Technical Office, Jeff Kordik

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Closed Loop Stepper Technology

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WHAT IS StepSERVO?
• TECHNOLOGY
for implemen1ng closed
loop servo control of 50-
pole permanent magnet
brushless DC motors, AKA
“step motors”.
• A RANGE OF PRODUCTS
consis1ng of integrated
motors in NEMA frame
sizes.

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How does StepSERVO compare to
tradi1onal open loop technology?

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Input
Drive/
Controller
Step
Motor
Output:
Rotor Posi1on
Tradi1onal Step Motor System is Open Loop
Pros of Open Loop Systems:
• Low cost
• Simple to use; no tuning required
• Simple to control with digital pulse
and direc1on signals
• Precise posi1oning
Cons of Open Loop Systems:
• Resonance at certain speeds can
lead to vibra1on and loss of torque
• Can stall without warning if torque
demand is too high
• Motor consumes current regardless
of load
• Can be noisy (audible)

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Pros of Closed Loop Systems:
• Addi1onal peak torque range
• Full closed-loop control, e.g. torque control
• Motor draws only the current that it needs
Input
Drive/
Controller
Step
Motor
Output:
Rotor Posi1on
StepSERVO System is Closed Loop
Sensor PID servo
control loop
• Be_er overall system accuracy
because drive/controller always
knows the posi1on of the rotor

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Input
Drive/
Controller
Output:
Rotor Posi1on
Sensor
Step
Motor
• 50-pole brushless motor (AKA step motor)
• 5000 line incremental encoder (20,000 counts/rev)
Note: 1024 line encoder used on smallest NEMA 11 motors only
• Integrated drive and control electronics
• Closed loop PID servo control

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Servo Motors
Open Loop Step Motors
Mo1on Control Market Space
Cost
$$$
$
Posi1on Loop Bandwidth
Speed, Efficiency, Noise
StepSERVO Motors
Performance

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1. ACCELERATION
2. EFFICIENCY
3. HEATING
4. AUDIBLE NOISE
5. COST
Side-by-Side Comparison:
StepSERVO vs. Open Loop

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1. ACCELERATION:
For short, fast moves
StepSERVO motors are best.

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0
50
100
150
200
250
300
0 5 10 15 20 25 30 35 40
Torque (oz-in)
Speed (rev/sec)
Open loop max torque Open loop usable torque
Max torque
Usable torque
Open loop speed-torque curve

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0
50
100
150
200
250
300
0 5 10 15 20 25 30 35 40
Torque (oz-in)
Speed (rev/sec)
StepSERVO peak torque StepSERVO con1nuous torque
Con1nuous torque
Peak torque Up to 50% higher torque
StepSERVO speed-torque curve

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0
50
100
150
200
250
300
0 5 10 15 20 25 30 35 40
Torque (oz-in)
Speed (rev/sec)
StepSERVO peak torque StepSERVO con1nuous torque Open loop usable torque
StepSERVO Closed loop torque StepSERVO Closed loop torque
Open loop torque
Comparison of Open loop and StepSERVO speed-torque curves
Up to 85% more
torque than open loop.

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0
5
10
15
20
25
0 0.02 0.04 0.06 0.08 0.1 0.12
Speed (rev/sec)
Time (sec)
Open loop move profile
Fastest open loop
move profile

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0
5
10
15
20
25
0 0.02 0.04 0.06 0.08 0.1 0.12
Speed (rev/sec)
Time (sec)
Fastest StepSERVO
move profile
Comparison of Open loop and StepSERVO move profiles
45% shorter move time
than open loop.
Almost 2X the number
of cycles per minute.
Fastest open loop
move profile

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2. EFFICIENCY:
StepSERVO motors consume
less power.

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0
2
4
6
8
10
12
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Speed (rev/sec)
Time (sec)
Open loop stepper
StepSERVO
Closed loop stepper
43.8 WaKs 14.2 WaKs
Side-by-side comparison:
Same move profile for both motors…
• Accel = 100 rev/sec2
• Decel = 100 rev/sec2
• Speed = 10 rev/sec
• Distance = 5 rev
• Dwell 1me = 0.1 sec
Average Power Consump'on:
More efficient!

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3. HEATING:
StepSERVO runs cooler.

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Ploss = i2R
A large por1on of the losses in a motor (Ploss) is equal to the square of
the current (i2) 1mes the winding resistance (R).
Losses generate heat.

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• StepSERVO motors only draw the current they need to move the load.
• Open loop motors draw the same amount of current whether it’s required to
move the load or not.
IMPORTANT
!

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0
2
4
6
8
10
12
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
Speed (rev/sec)
Time (sec)
Open loop stepper
StepSERVO
Closed loop stepper
76.0 °C 36.9 °C
Side-by-side comparison:
Same move profile for both motors…
• Accel = 100 rev/sec2
• Decel = 100 rev/sec2
• Speed = 10 rev/sec
• Distance = 5 rev
• Dwell 1me = 0.1 sec
Motor Case Temperature, aZer 30 minutes:
Runs cooler!

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4. AUDIBLE NOISE:
StepSERVO runs quieter.

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Motor Under Test
(MUT)
Microphone

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0
10
20
30
40
50
60
70
80
90
0 5 10 15 20 25 30 35 40
Audible noise (dBA @ 12")
Speed (rev/sec)
Open loop
StepSERVO™ closed loop
From 0 to 1700 rpm,
StepSERVO is no1ceably quieter.
From 1700 to 2000 rpm,
There is not much difference.
Step motors are not generally
recommended above 2000 rpm.

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5. COST:
StepSERVO offers great value.

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Open Loop Open Loop
w/ encoder
StepSERVO
Closed Loop
1X
1X
1.2X
1.38X
Rela've Cost
Comparison:
Integrated
Stepper Motors
Only 38% more than
open loop
Only 15% more than
open loop w/ encoder!
Start at $257
1.15X 1X

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SPECIFICATIONS:
TSM
SSM
TXM

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TSM Specifica+ons
• DC input voltages up 70 VDC
• RS-232, RS-485
• 8 DIN, 4 DOUT, 1 AIN
• Step & Direc1on, Analog Velocity/
Torque/Posi1on, Streaming
Commands, Stored Program
Execu1on, Fieldbus:
• NEMA 11, 17 and 23 frame sizes

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• DC input voltages up 70 VDC
• Ethernet
• 3 DIN, 1 DOUT, 1 AIN
• Step & Direc1on, Analog
Velocity/Torque/Posi1on,
Streaming Commands, Stored
Program Execu1on, Fieldbus:
• NEMA 23 frame size
SSM Specifica+ons

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TXM Specifica+ons
• DC input voltages up 70 VDC
• RS-232, RS-485, Ethernet
• 3 DIN, 1 DOUT, 1 AIN
• Step & Direc1on, Analog Velocity/
Torque/Posi1on, Streaming
Commands, Stored Program
Execu1on, Fieldbus:
• NEMA 24 frame size
• IP65 rated, M12 connectors

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TSM SSM TXM
• IP65
• NEMA 24
• RS-232, RS-485,
Ethernet
• IP40
• NEMA 11, 17, 23
• RS-232, RS-485
• IP40
• NEMA 23
• Ethernet
• Step&Dir, Velocity, Streaming Commands, Stored Program, Fieldbus

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What StepSERVO IS…
• Technology for closed loop control of brushless motors.
• A motor for precise and accurate posi1oning applica1ons with…
• More torque.
• Higher accelera1on rates.
• Be_er overall system accuracy.
• Less wasted energy and heat.
• Be_er efficiency.
• Less audible noise.

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What StepSERVO IS…
• An excellent solu1on for velocity control applica1ons.
• An excellent solu1on for torque control applica1ons.
• An excellent solu1on for all kinds of applica1ons, including…
• Labelling
• Material handling
• 3D prin1ng
• Automated assembly
• Pressing
• Capping, screwing
• Linear applica1ons with ballscrews, lead
screws and belt actuators
• Medical devices
• Laboratory equipment
• Semiconductor machinery
• CNC machining
• And many, many more…

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What StepSERVO IS NOT…
• A low-pole count servo motor (e.g. 4, 6 or 8 poles).
• Recommended for speeds above 2000 rpm.

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Resources
Product Informa1on:
www.applied-mo'on.com
• Applica1on Notes
• Videos
• Sovware Downloads
• Manuals and Quick Setup Guides

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Resources
White Paper:
www.applied-mo'on.com
DIRECT LINK: www.applied-mo1on.com/stepservo-white-paper

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Resources
Contact
www.applied-mo'on.com
DIRECT LINK: www.applied-mo1on.com/contact
1-800-525-1609

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Monthly e-Newsle_er
Sign Up Here:
www.applied-mo'on.com/newsleKer
DIRECT LINK: www.applied-mo1on.com/newsle_er
• 1 Email per month
• New product releases
• Technical 1ps & tricks
• More…

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Thank you!

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Miles Budimir
Senior Editor
Design World
mbudimir@wtwhmedia.com
@DW_Motion
Eric Rice
Marketing Director
Applied Motion Products, Inc.
erice@applied-motion.com
@ampmotion
Questions?
StepSERVO Technology:
Bridging the gap between Cost Effective and High Performance Motion Control

57. #DWwebinar
Thank You
q This webinar will be available at
designworldonline.com & email
q Tweet with hashtag #DWwebinar
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