Go to Parker.com
  • Sign in
Technologies
  • Aerospace
  • Climate Control
  • Electromechanical Group
  • Filtration
  • Fluid and Gas Handling
  • Hydraulics
  • IoT
  • Pneumatics
  • Process Control
  • Sealing and Shielding
Blogs Forums Knowledge Bases
Parker Community
Parker Community
  • Technologies
    • Aerospace
    • Climate Control
    • Electromechanical Group
    • Filtration
    • Fluid and Gas Handling
    • Hydraulics
    • IoT
    • Pneumatics
    • Process Control
    • Sealing and Shielding
    Blogs Forums Knowledge Bases
  • User
  • Site
  • Search
  • User
Home Technologies Electromechanical Group Electromechanical - Industrial Electromechanical Industrial Knowledge Base How Much Power Do I Need?
Electromechanical - Industrial
  • Technologies
  • Electromechanical Group
  • Electromechanical - Industrial
  • More
  • Cancel
Electromechanical - Industrial
Electromechanical Industrial Knowledge Base How Much Power Do I Need?
  • Electromechanical – Industrial Support Forum
  • Electromechanical Industrial Knowledge Base
  • Members
  • Sub Groups
  • More
  • Cancel
  • New
Electromechanical - Industrial requires membership for participation - click to join
  • Electromechanical Knowledge Base & Frequently Asked Questions
  • Motion and Machine Controllers+
  • General Technology Information+
  • Virtual Engineer+
  • Visualization and Human Machine Interface (HMI)+
  • Servo Drives and Servo Drive/Controllers+
  • Stepper Drives and Stepper Drive/Controller+
  • AC/DC Industrial Drives+
  • Gearheads+
  • Servo Motors+
  • Step Motors+
  • Linear and Rotary Positioners+
  • Electric Cylinders+
  • T-Slot Aluminum Framing+
  • C3 + Xpress + ETH+
  • How can I stay updated on Parker electromechanical and drives product news?
  • Legacy (Discontinued)+
  • Other-
    • -E Motor Option
    • AC-03 / AC-07 / AC-10 / AC-15 manuals
    • Battery Replacement for 500 or JSI
    • C/CX Suggested Replacements
    • Cage Code
    • Changing the Configuration of the Compumotor Plus
    • Color Code for Stepper Motor External Encoder
    • Compumotor Plus motor internal potentiometers
    • Controller Cable Drawings
    • Custom Products
    • Daedal to Compumotor Cross Reference
    • Daisy chaining AR-C
    • DC Brushed Motor with the Aries & Gemini
    • Drive Input Power
    • Dumping the 3000 memory.
    • EDC TDC XDC VRP PMC
    • Encoder or Resolver?
    • Ferrite absorber
    • Heat Dissipation within Enclosures
    • How do I change the Btorq.dat file?
    • How do I download software from www.parkermotion.com?
    • How do I get support for my Parker SSD / Parvex division products?
    • How Much Power Do I Need?
    • Inertia Ratio
    • Is Parker Compumotor ISO9000 Certified?
    • KH/KS Error 62
    • KH/KS Motors
    • M-Drive/Motor Compatibility and Matching
    • Mating MS Connectors for KH motors
    • Motion Sizer: No motor/gearhead/actuator database error (No TS torque, Divide by 0)
    • My ARC-C or -D does not fit on my motor.
    • Obsolete Products -- 1990 - 1999
    • Obsolete Products -- 2000 and later
    • Offset voltage on the Compumotor Plus
    • Parker Electronic Motion and Control Division (EMC) - Industrial Products Warranty
    • Parker MotionSizer: Stationary Rack, Moving Pinion
    • Parker SBC Replacement products
    • PK130M Ordering Part Number Change
    • PK2 Part Number Change(5/9/97)
    • PMC Motion Controllers (PMC20 & PMC10)
    • Printing From Compumotor DOS-based Applications
    • QM Series Motor Information
    • Setting the deadband on the VAC.
    • Software for the SV
    • Three wire prox sensor color code
    • Torque Margin
    • Transformer Specs
    • Upgrading A/AX Systems
    • VM15 and VM25 Terminal Breakout Modules
    • What is a single and two speed resolver?
    • What is CE, EMC and LVD?
    • What is difference between CD35M and CD60/80M?
    • Windows 2000 locks up when printing
  • Memorandum: Information on EPA ban of Persistent bioaccumulative toxin (PBT)
Wiki Actions
  • Share
  • More
  • Cancel
Community Quick Links
  • Home
  • Technologies
    • Aerospace
      • Supplier Resource Center
    • Climate Control
    • Electromechanical Group
      • Electromechanical - Industrial
      • Electromechanical – Mobile
    • Filtration
    • Fluid and Gas Handling
    • Hydraulics
    • IoT
      • Mobile IoT
    • Pneumatics
      • Pneumatic Industrial
      • Pneumatics Mobile
    • Process Control
    • Sealing and Shielding
  • Community Blogs
  • Community Forums
  • Community Knowledge Bases
Follow Us
  • Follow Parker Hannifin on social media

Follow Parker Hannifin on social media:

How Much Power Do I Need?

Print Friendly and PDF
How much power do I need for my application?

Here is a very reliable way to determine how much power your application will require so that a properly sized power supply and/or transformer can be selected. Follow these steps:

1) Determine your continuous and peak requirements for mechanical shaft power in terms of speed and torque (just peak requirement for stepper applications). If you do not know what the exact requirements are for your application, play it safe and assume worst case by choosing a point on the "knee" of the speed/torque curve for your system. Make sure that your speed is in units of revolutions-per-second (rps) and that your torque is in units of ounce-inches (oz-in).

2) Multiply your speed value and your torque value. Divide the product by 16,800 which will result in a value of shaft power in units of horsepower (hp) for that particular moment.

3) Convert your mechanical power to electrical power by multiplying your mechanical value by 746 which will result in a value of electrical power in units of watts. This value is the electrical output power required from your drive. Remember that in a servo application you must do this for both continuous and peak considerations.
4) No drive amplifier is perfect, and there is always some loss between the input power and the output power. So the next step is to determine how much input power is required by your drive in order to deliver the output power that you have just calculated. It is safe to assume an efficiency of approximately ninety percent over the entire range of Parker drive offerings. Therefore multiply the output power that you calculated in Step 3 by 1.11 which will result in a value of electrical power also in units of watts. Again, remember that in a servo application you must do this for both continuous and peak considerations.

5) Just like the drive, no motor is perfect so you must compensate for this. All rotary motors are approximately 80 percent efficient throughout their speed range. Therefore multiply the output power that you calculated in Step 4 by 1.25 which will result in a value of electrical power also in units of watts. This value is the electrical input power required by your drive. Again, remember that in a servo application you must do this for both continuous and peak considerations.
6) If you are sizing a DC power supply for your application, your work is nearly done. You have calculated the amount of continuous and peak power that your drive will require. If you plan to use a power supply for more than one axis, you must perform the previous steps for each axis, and you must select a power supply that will satisfy the total continuous and peak wattage for all of your axes. If you are sizing a transformer or a power supply that uses rating units of volt-amps (VA), you must now convert your requirements (in units of watts) into units of volt-amps by dividing the value in watts by a power factor of 0.66. Again, you need to consider both continuous and peak requirements for all of your axes.

IT IS IMPORTANT TO SELECT A TRANSFORMER OR POWER SUPPLY WITH A WATTAGE OR VOLT-AMP RATING THAT IS GREATER THAN THE TOTAL PEAK POWER REQUIREMENTS OF ALL YOUR AXES. IF THE RATING IS NOT GREATER, THEN YOU MUST CONSIDER USING A POWER DEVICE WITH A GREATER RATING OR YOU MUST CONSIDER USING MORE THAN ONE POWER DEVICE.
  • Share
  • History
  • More
  • Cancel
  • Sign in to reply
Related
Follow Us
  • Follow Parker Hannifin on social media

Follow Parker Hannifin on social media:

Parker Hannifin Parker Hannifin

  • Products
  • About Parker
  • Investors
  • Community
  • Careers

Global Operations Global Operations

  • Divisions
  • Sales Companies
  • Worldwide Locations
  • Distribution Network
  • ParkerStore™ Network

Company Information Company Information

  • Newsroom
  • Event Calendar
  • Working with Parker
  • Product Brands
  • History

Global Support Center Global Support Center

  • Support
  • CAD
  • Where to Buy
  • Contact Parker
  • Manage Online Orders
© Parker Hannifin Corp 2023
  • Site Map
  • Safety
  • Privacy Policies
  • Terms and Conditions
  • Community Terms of Use
ENGINEERING YOUR SUCCESS.