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Servo2Go.com Featured in MICROManufacturing’s Jan/Feb 2013 Issue March 7, 2013

Posted by Servo2Go.com in About Us, News & Events, Technical Support Information.
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MicroManufacturing Smaller Footprint Article

MicroManufacturing Smaller Footprint Article

Servo2Go.com is featured in the article, Smaller footprint, in MICROManufacturing’s January/February 2013 issue.   The article discusses the development of more compact and integrated motion control systems and challenges faced by manufacturers in the production process.

The article is available online here (or click on the link below)

http://www.micromanufacturing.com/content/smaller-footprint


Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

Join the New LinkedIn Group ‘Motion Control Fundamentals’ March 4, 2013

Posted by Servo2Go.com in News & Events, Product Video's, Technical Support Information.
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Motion Control Fundamentals LinkedIn Group

Motion Control Fundamentals LinkedIn Group

Created by Electromate.com, this Technical Group strives to advance the knowledge of the fundamentals of Electro-mechanical Motion Control.  We welcome regular posts by group members of any Technical Notes & White Papers, Video’s, Webinars, Podcasts, Engineering Formulae, Sizing Software, etc., related to the discipline of Motion Control.  We appreciate your participation and encourage your comments.

If you are novice or technically proficient user of Motion Control products/systems, please join this group.  No Job Postings please.

Click on the link below to join now.

 

http://www.linkedin.com/groups/Motion-Control-Fundamentals-4883684/about

Tags: Motion Control, Motor Control, Machine Control, Mechatronics, High-Tech Systems, Robotics, Automation, Servo Systems, Stepper Systems, Linear Motion, Rotary Motion

Typical component forces in a drive system March 3, 2013

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Source:  Maxon Motor AG Formulae Handbook by Jan Braun

The force required to accelerate a mass of 1 kg by 1 m/s in 1 s has the unit kg · m/s², with the special unit name Newton (N) .

Typical Component Forces in a drive system

Typical Component Forces in a drive system

Understanding Pulse Width Modulation (PWM) February 21, 2013

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Servo amplifiers are used extensively in motion control systems where precise control of position and/or velocity is required.  The amplifier basically translates the low-energy reference signals from the controller into high-energy signals (motor voltage and current).  These reference signals can be either of an analog or digital nature.  An analog +/-10 VDC signal is still the most common.  This signal can represent either a motor torque or velocity demand.

Although there exist many ways to “amplify” electrical signals, pulse width modulation (or PWM) is by far the most efficient and cost-effective approach.  At the basis of a PWM amplifier is a current control circuit that controls the output current by varying the duty cycle of the output power stage (fixed frequency, variable duty cycle).   A typical setup is shown below in Figure 2.3  (here for a single phase load):

PWM Current Control Circuit

PWM Current Control Circuit

S1, S2, S3 and S4 are power devices (MOSFET or IGBT) that can be switched on or off. D1, D2, D3, and D4 are diodes, which guarantee current continuity.  The bus voltage is depicted by +HV.  The resistor Rc is used to measure the actual output current.  For electric motors, the load is typically inductive (due to the windings used to generate electromagnetic fields).  The current can be regulated in both directions (+ and -) by activating the appropriate switches.  When switch S1 and S4 (or S2 and S3) are activated, current will flow in the positive (or negative) direction and increase.  When switch S1 is off and switch S4 is on, (or S2 off and S3 on) current will flow in the positive (or negative) direction and decrease (via one of the diodes).  The switch “ON”-time is determined by the difference between the current demand and the actual current.  The current control circuit will compare both signals every time interval (typically 50m sec or less) and activate the switches accordingly (this is done by the switching logic circuit, which also performs basic protection functions).  The picture below shows the relationship between the pulse width (ON-time) and the current pattern.  Note that the current rise time depends on the bus voltage (+HV) and the load inductance.  Therefore, certain minimum load inductance requirements are necessary depending on the bus voltage.

Output current and duty cycle relationship

Output current and duty cycle relationship

Make sure minimum inductance requirements are met!  Pulse Width modulation (PWM) servo drives deliver a pulsed output that requires a minimum amount of load inductance to ensure that the DC motor current is properly filtered.  The minimum inductance values for different drive types are shown in the individual data sheet specifications.  If the drive is operated below its maximum rated voltage, the minimum load inductance requirement may be reduced. Most servo-motors have enough winding inductance.  Some types of motors (e.g. “basket-wound”, “pancake”, etc.) do not have a conventional iron core rotor, so the winding inductance is usually less than 50 μH.  If the motor inductance value is less than the minimum required for the selected drive, use an external filter card.

More information on PWM Servo Amplifiers from Servo2Go can be found at the link below-

http://www.servo2go.com/category.php?cat=10020&sub=10002

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

Handbook For High-Performance Brushless Servo Systems February 7, 2013

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Published by ElectroCraft,  12pages

Comparison of DC servomotors and brushless servomotors

ElectroCraft Handbook For High-Performance Brushless Servo Systems

ElectroCraft Handbook

The traditional permanent magnet DC servomotor has been the industry workhorse for many decades in highperformance servo drive applications.  The primary reason for this is that the DC servomotor is very easy to control using adjustable DC voltage.  A brief review of the operating principle of the DC motor illustrates this point (continued)…

Click on the link below to download this Free Handbook.

http://www.servo2go.com/support/files/ElectroCraft%20EC_Handbook%20for%20High-Performance%20Brushless%20Servo%20Systems-Final%20S2G.pdf

More information on brushless servo motors from ElectroCraft can be found at the link below-

http://www.servo2go.com/supplier.php?id=1189973790

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

Finding the Index on an Incremental Encoder with a DMM January 31, 2013

Posted by Servo2Go.com in Product Video's, Technical Support Information.
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Sometimes you don’t have the right tools to do the job.

Lets say you needed to identify where the index pulse was firing on your incremental encoder, but you left your oscilloscope in your other jacket pocket, and now all you have on hand is a DMM.

Well fear not, finding the index with a multimeter is possible although a bit tedious.

The index fires once per revolution and at higher line counts this makes it VERY easy to miss.   Since there is some delay in a multimeter’s display time, you will need to rotate the encoder very slowly to catch a change in voltage level.

The Blue box has a nine-volt battery inside that I regulated down to 5Vdc for the encoder power.   I have pulled out connections to ground (Black wire) and the index channel (Orange wire).  When the index fires, the voltage will go from zero to five volts.

More information on the encoders from Quantum Devices can be found at the link below-

http://www.servo2go.com/supplier.php?id=1057843244

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

 

New Cost-Effective, High-Performance Gear Reducer from Shimpo Drives January 29, 2013

Posted by Servo2Go.com in New Product Press Releases.
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The new Able VRB Gear Reducer is an excellent alternative for OEMs that need a cost-effective, high-performance gear reducer.   The high-precision and torque handling capabilities are an ideal fit for packaging machinery, medical equipment, and assembly cell automation.

Shimpo Able VRB Planetary Gearbox

Shimpo Able VRB Planetary Gearbox

The standard mounting is a through-bolt style and the unit is a dimensional replacement for a few competitive models.  The maximum output torque peaks at 2,300 in-lbs.   The VRB provides high-precision backlash rating of ❤ arc-minutes as its standard, which means the unit provides exceptional accuracy and loading for a good value.

The Able VRB Gear Reducers ship in < 2 weeks.

More information on ABLE VRB Series from Shimpo Drives can be found at the link below-

http://www.servo2go.com/product.php?ID=105497&cat=

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

RIO-47300 Pocket PLC Has 48 Digital and 16 Analog I/O, and Two Ethernet Ports January 25, 2013

Posted by Servo2Go.com in New Product Press Releases.
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On the heels of the recently released RIO-47142 comes the new RIO-47300 which is an expanded model that includes two Ethernet ports, more I/O, and screw terminals.  The RIO-47300′s Ethernet ports allow an unlimited number of RIOs to be daisy-chained together without an external Ethernet switch. The RIO-47300′s memory allows 400 program lines, 254 variables, 1000 array elements, 6 PID control loops and 5 Ethernet handles.   Digital inputs and outputs on the RIO-47300 are increased from 16  to 24 each for a total of 48 optically isolated digital I/O. All the digital outputs are high-power 500mA outputs. The 16 analog inputs and outputs are user-configurable for +/-10V, +/-5V, 0-10V or 0-5V.

Galil RIO-47300 Pocket PLC

Galil RIO-47300 Pocket PLC

The RIO-47300 uses screw terminals for quick and easy prototyping.   Dimensions of the RIO-47300 are 10.8” x 4.7” with DIN tray.   The RIO-47300  is $495 US in single quantity and $360 US/ea in quantities of 100.

Galil’s RIO Pocket PLC series provides a cost-effective, compact and intelligent solution for programmable I/O control.  Standard features of the RIO series include a RISC processor for fast handling of I/O and logic, multitasking, PID process control loops, timers, counters, web interface, email alerts, datalogging, Ethernet and RS232 ports, LED indicators for all digital I/O ports, and an option to interface to position sensors, thermocouples and RTD temperature sensors.   The RIO is easy to program using Galil’s intuitive command language or Galil’s Ladder Interface Software.   The complete list of RIO-47300 features is listed in Table 1.   Table 2 shows currently available RIO models.

More information on RIO-47300 Series from Galil can be found at the link below-

http://www.servo2go.com/product.php?ID=102190&cat=

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

Powerful HMI features more than 200 communication drivers January 11, 2013

Posted by Servo2Go.com in New Product Press Releases.
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The UniOP eTOP Series 300 combines state-of-the-art features and performance with an oustanding design, the ideal choice for HMI applications including factory and building automation.

Exor eTOP306

Exor eTOP306

The 300 Series comes in 3 different front panel colors:  White (Stock), Black (Special Order), and Metallic Silver (Special Order),which will help match or dress up any machine panel.  Features Include:

  • 5 year warranty
  • Fully compatible with UniOP Designer 6 software
  • All Alluminum Housing & Bezel
  • Available On-Board Ethernet
  • Distributed I/O Capable
  • On-Board PLC Available
  • On-Board I/O Available
  • UL Approvals
  • Easy Mounting
  • GPRS Capable
  • Designed for cost sensitive applications
  • Full vector graphic capabilities
  • Bright TFT display with LED backlight
  • Connections include Ethernet and USB

To help reduce your implementation costs, more than 200 communication drivers, allowing you to connect to a wide variety of industrial devices.  And your training and support costs will be minimized, as all units are set up with a single, easy-to-use Windows-based configuration software package.

More information on eTOP306 from Exor Electronic R&D can be found at the link below-

http://www.servo2go.com/product.php?ID=105223&cat=

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com

Extended Environment Servo Amplifiers December 8, 2012

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The DZX series of digital servo drives from Advanced Motion Controls are designed to drive brushed and brushless servomotors from a compact form factor ideal for embedded applications.  These fully digital drives operate in torque, velocity, or position mode and employs Space Vector Modulation (SVM), which results in higher bus voltage utilization and reduced heat dissipation compared to traditional PWM.  The command source can be generated internally or can be supplied externally.  In addition to motor control, these drives feature dedicated and programmable digital and analog inputs and outputs to enhance interfacing with external controllers and devices.

Advanced Motion Controls DZX Servo Amplifier

Advanced Motion Controls DZX Servo Amplifier

DZX amplifiers feature an RS-232 interface for drive configuration and setup as well as a RS-485 interface for drive networking.  Drive commissioning is accomplished using DriveWare available at http://www.a-m-c.com.

All drive and motor parameters are stored in non-volatile memory.

The DZX amplifiers conform to the following specifications and are designed to the Environmental Engineering Considerations as defined in MIL-STD-810F.

>Extended Environment Temperature -40°C to +75°C (-40°F to +167°F)
> Storage Temperature -50°C to +100°C (-58°F to +212°F)
> Thermal Shock -40°C to +75°C (-40°F to +167°F) in 2 min.
> Relative Humidity 0 to 95% Non-Condensing
> Vibration 30 Grms for 5 min. in 3 axes

Z-Drives are a culmination of advances in manufacturing technology.  By utilizing dual sided PCB boards, high efficiency power devices and creative design we are able to make the Z-Drives possible.  These drives have been designed to be integrated into your PCB and come in multiple architechtures with features previously found only in larger drives.  No wires and smaller size = less cost and easier installation – just plug’m in!

Features include:

  • Four Quadrant Regenerative Operation
  • Space Vector Modulation (SVM) Technology
  • Fully Digital State-of-the-art Design
  • Programmable Gain Settings
  • Fully Configurable
  • PIDF Velocity Loop
  • PID + FF Position Loop
  • Compact Size, High Power Density
  • 16-bit Analog to Digital Hardware

For more information on the Extended Environment Servo Amplifiers from Advanced Motion Controls, click on the link below-

http://www.servo2go.com/search.php?search=Extended Environment&D=PROD

For more information, please contact:

Editorial Contact:

Warren Osak
sales@servo2go.com
Toll Free Phone:  877-378-0240
Toll Free Fax:   877-378-0249
www.servo2go.com