Intelligent Motion Systems MDrive34AC manual Figure B.1: MDrive23 Torque-SpeedCurve

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Figure B.1: MDrive23 Torque-Speed Curve

Nominal Output Torque

Calculate the nominal output torque using the torque values from the MDrive’s Speed/Torque Tables.

Nominal output torque (TN) is the actual torque generated at the Planetary Gearbox output shaft which includes reduction ratio (i), gear efficiency (η) and the safety factor (sf) for the MDrive. Once the reduction ratio (i) is determined, the nominal output torque (TN) can be calculated as follows:

TN = TM ⋅ i ⋅ η ⎟ sf or:

Motor torque ⋅ reduction ratio ⋅ gear efficiency ⎟ safety factor = nominal output torque.

For gear efficiency (η) refer to the Mechanical Specifications for the 7:1 Planetary Gearbox designed for your MDrive.

For motor torque (TM) see the appropriate MDrive Speed/Torque Table. Dependent on which MDrive you have, the torque range will vary. The torque will fall between the high voltage line and the low voltage line at the indicated speed for the MDrive. (See the example Speed/Torque Table below.)

 

140

 

 

 

 

 

 

24 VDC

99

 

 

 

 

 

 

 

 

45 VDC

 

 

120

 

 

 

 

 

 

85

Torque

Oz-In

 

 

 

 

 

 

75 VDC

 

 

 

 

 

 

 

 

100

 

 

 

 

 

 

 

71

80

 

 

 

 

 

 

 

56

in

 

 

 

 

 

 

 

in

60

 

 

 

 

 

 

 

42

Torque

 

 

 

 

 

 

 

N- cm

40

 

 

 

 

 

 

 

28

20

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

 

 

 

0

0

1000

2000

3000

4000

5000

6000

7000

 

Speed in Full Steps per Second

Figure B.1: MDrive23 Torque-Speed Curve

The Speed/Torque Table above is for an MDrive23 Double Length Motor. This MDrive will produce a torque range of 51 to 95 oz-in in the full voltage range at the speed of 2000 Full Steps/Second (600 RPM).

Please note that this is not the usable torque range. The torque output to the Planetary Gearbox must include a safety factor (sf) to allow for any voltage and current deviations supplied to the MDrive.

The motor torque must include a safety factor (sf) ranging from 0.5 to 0.7. This must be factored into the nominal output torque calculation. A 0.5 safety factor is aggressive while a 0.7 safety factor is more conser- vative.

Example:

The available motor torque (TM) is 51 to 95 oz-in.

NOTE: You may specify a torque less than but not greater than the motor torque range.

For this example the motor torque (TM) will be 35 oz-in. A 6.75:1 reduction ratio (i) has been determined.

Gear efficiency (η) = 80% from the appropriate table for the Planetary Gearbox which is used with an MDrive23.

Nominal output torque would be:

Motor torque (TM = 35) ⋅ reduction ratio (i = 6.75) ⋅ gear efficiency (η = 0.8) ⎟ safety factor (sf = 0.5 or 0.7)

35 ⋅ 6.75 = 236.25 ⋅ 0.8 = 189 ⎟ 0.5 = 378 oz-in nominal output torque (TN) or

35 ⋅ 6.75 = 236.25 ⋅ 0.8 = 189 ⎟ 0.7 = 270 oz-in nominal output torque (TN)

With the safety factor (sf) and gear efficiency (η) included in the calculation, the nominal output torque (TN) may be greater than the user requirement.

A-8

MDriveAC Plus Microstepping Hardware - Revision R031808

 

Relevant to Firmware Version 3.0.02

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Contents 34 TM Excellence in MotionTM42TM OPERATING INSTRUCTIONSinaccuracies Low Voltage Installation InformationMDriveAC Plus Microstepping Revision R031808 Qualification of personnel Important informationIntended Use This page intentionally left blank Part 1 Hardware Specifications Table Of ContentsPart 2 Interfacing and Configuration 1-13Section 2.4: Using User-DefinedSPI Section 2.3: Using the IMS SPI Motor Interface2-12 2-21Part 1: Hardware Specifications List Of FiguresPart 2: Interfacing and Configuration AppendicesPart 1: Hardware Specifications List of TablesPart 2: Interfacing and Configuration AppendicesConnect Opto Power and Logic Inputs Connecting AC PowerGETTING STARTED MDriveAC Plus MicrosteppingInstall the IMS SPI Motor Interface Connecting Parameter Setup CableMotion Settings DialogInput Settings Dialog Figure GS.2: MDriveAC Plus CDExcellence in Motion TM PART HARDWARE SPECIFICATIONSmICROSTEPPING Relevant to Firmware Version Page Intentionally Left BlankFeatures and Benefits ConfiguringSECTION Introduction to the MDrive34AC Plus Microstepping20 Microstep Resolutions up to Electrical Specifications General SpecificationsThermal Specifications I/O SpecificationsMDriveAC Plus Microstepping Setup Parameters Setup ParametersMotor Specifications DefaultDimensions in Inches mm Mechanical SpecificationsConnectors Control Knobavailable to interface to the 19-PinM23 Connector Pin Assignment and DescriptionNEED A CABLE? The following cordset isConnections Pin Assignment - P1 I/O, SPI and EncoderPin # FunctionInside: Pins 13 - Outside: Pins 1Options and Accessories Configuring Introduction to the MDrive42AC Plus MicrosteppingFeatures and Benefits Motor, Power Supply, and Drive Electronics20 Microstep Resolutions up to Thermal Specifications Electrical SpecificationsI/O Specifications Communications SpecificationsMDriveAC Plus Microstepping Setup Parameters Setup ParametersDefault Table 1.4.1: Setup ParametersDimensions in Inches mm Mechanical SpecificationsConnectors P1 P3Pin Assignment and Description available to interface to the 19-PinM23 ConnectorNEED A CABLE? The following cordset isConnections Pin Assignment - P1 I/O, SPI and EncoderPin # FunctionInside: Pins 13 - Outside: Pins 1Pin Pin Pin Parameter Setup Cable and Adapter Options and AccessoriesInternal Encoder Control KnobSection 2.2: Connecting SPI Communications PART INTERFACING AND CONFIGURINGSection 2.3: Using the IMS SPI Motor Interface Section 2.4 Using User-DefinedSPIRelevant to Firmware Version Page Intentionally Left BlankLogic Interface and Connection Isolated Logic Input Pins and ConnectionsOptically Isolated Logic Inputs MD-CS10x-000Wire Color ReferenceStep Clock Isolated Logic Input CharacteristicsDirection QuadratureQUADRATURE TIMING STEP/DIRECTION TIMINGUP/DOWN CW/CCW TIMING Figure 2.1.3: Clock Input Timing CharacteristicsMDriveACPlus Optocoupler ReferenceMicrostepping Optocoupler ReferenceMDriveACPlus Microstepping NPN Open Collector Interface SinkingPNP Open Collector Interface Sourcing Input Connection ExamplesSwitch Interface Sourcing Switch Interface SinkingFault Temperature Warning Output Switch Interface ExampleFigure 2.1.7: Fault Output interfaced to an LED Minimum Required ConnectionsFigure 2.1.8 Minimum Required Connections Connecting the SPI Interface Connecting SPI CommunicationsSPI Signal Overview +5 VDC OutputMDriveACPlus Microstepping #1 MDriveACPlus SPI Pins and ConnectionsMicrostepping #2 2-11Configuration Parameters and Ranges Using the IMS SPI Motor Interface InstallationColor Coded Parameter Values MDriveAC Plus Microstepping Setup ParametersIMS SPI Motor Interface Menu Options View Settings ScreenFile Perform File OperationRecall UpgradeHelp 2-14MSEL Microstep Resolution Selection 1.MSEL: Microstep Resolution SelectFactory Connected/Disconnected IndicatorExit HCDT Hold Current Delay TimeInput Clock Filter Settings Screen 2 I/O Settings Configuration ScreenEnable Active High/Low Input Clock TypeIMS Part Number/Serial Number Screen Fault IndicationMDriveAC Plus Microstepping Fault Codes Upgrade Instructions The IMS SPI Upgrader Screen2.Serial Number: the serial number of your unit Communications Port Operations Initialization ScreenPort Menu SPI Timing Notes Using User-DefinedSPICheck Sum Calculation for SPI SECTION2-22 SPI Commands and ParametersTable 2.4.1: SPI Commands and Parameters Relevant to Firmware VersionWrite READSPI Communications Sequence Relevant to Firmware Version Page Intentionally Left BlankAppendix B: Gear Boxes APPENDICESAppendix C: Optional Cables and Cordsets Appendix D: Interfacing an EncoderPage MDriveAC Plus Microstepping Motor Performance Motor SpecificationsMDrive34AC Plus Microstepping MDrive34AC – 120VACTriple Length Double LengthMDrive42AC Plus Microstepping MDrive42AC – 120VACSingle Length Motor SpecificationsDouble Length 1147 oz-in/810 N-cmMDrive with Planetary Gearbox APPENDIX BSection Overview Product OverviewExample Calculating the Shock Load Output Torque TABFigure B.1: MDrive23 Torque-SpeedCurve Table B.1: Planetary Gearbox Operating Factor Weight of A-11 Conveyor BeltA-12 A-13 A-14 Planetary Gearbox for MDrive34AC Plus2MDrive34AC Plus2 Planetary Gearbox Parameters PM81 Gearbox Ratios and Part NumbersA-15 Planetary Gearbox for MDrive42AC Plus2PM105 Gearbox Ratios and Part Numbers PM120 Gearbox Ratios and Part Numbers A-16Installation Procedure for the MX-CC300-000 MD-CC300-000 USB to SPI Parameter Setup CableAPPENDIX C Optional Cables and CordsetsA-18 Determining the Virtual COM Port VCP A-19A-20 AdapterPin Assignment and Wire Colors MD-CS10x-000CordsetP1 - Expanded I/O Configuration FunctionTable C.2: Euro AC Wire Color Chart MD-CS20x-000Cordset3-PinEuro AC Connector MD-CS200-000APPENDIX D Pin ConfigurationMDriveAC Plus Microstepping Factory Mounted EncoderA-24 Encoder SignalsAPPENDIX E FeaturesLinear Slide Option MDrive34Plus Linear SlideSpecifications A-26Mechanical Specifications ScrewOBTAINING WARRANTY SERVICE TWENTY-FOUR24 MONTH LIMITED WARRANTYWARRANTY Excellence in Motion intelligent motion systems, INC
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