Intelligent Motion Systems MDriveAC manual Chain Drive

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Chain Drive

In a system with a chain drive, the following must be considered:

the weight and size of drive sprocket and any attaching hub

the weight and size of the driven sprocket and shaft

the weight of the chain

the weight of any material or parts being moved

Weight of

chain

Weight and size of drive

sprocket and hub

Weight and size of driven sprocket,

shaft and any material or parts being moved

Figure B.6: Chain Drive System Inertia Considerations

Once the system inertia (JL) has been calculated in oz-in-sec2, it can be matched to the motor inertia. To match the system inertia to the motor inertia, divide the system inertia by the square of the gearbox ratio. The result is called Reflected Inertia or (Jref).

Jref = JL ⎟ Ζ2

Where:

JL = System Inertia in oz-in-sec2

Jref = Reflected Inertia in oz-in-sec2

Z = Gearbox Ratio

The ideal situation would be to have a 1:1 system inertia to motor inertia ratio. This will yield the best positioning and accuracy. The reflected inertia (Jref) must not exceed 10 times the motor inertia.

Your system may require a reflected inertia ratio as close to 1:1 as possible. To achieve the 1:1 ratio, you must calculate an Optimal Gearbox Ratio (Zopt) which would be the square root of JL divided by the desired Jref. In this case since you want the system inertia to match the motor inertia with a 1:1 ratio, Jref would be equal to the motor inertia.

Zopt = JL ⎟ Jref

Where:

Zopt = Optimal Gearbox Ratio

JL = System Inertia in oz-in-sec2

Jref = Desired Reflected Inertia in oz-in-sec2(Motor Inertia)

Appendices

A-13

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Contents 34 TM Low Voltage Installation Information UL Application Details and Conditions of AcceptanceTable Of Contents Appendices List Of Figures List of Tables Connecting AC Power Connect Opto Power and Logic InputsMDriveAC Plus Microstepping Before You BeginConnecting Parameter Setup Cable Install the IMS SPI Motor InterfacePart Hardware Specifications Intentionally Left Blank Features and Benefits ConfiguringIntroduction to the MDrive34AC Plus Microstepping Page MDrive34AC Plus Microstepping Detailed Specifications General SpecificationsSetup Parameters Single LengthMechanical Specifications Dimensions in Inches mmP1 19-Pin M23 Connector I/O and SPI Communications Pin Assignment and DescriptionPin Assignment P1 I/O, SPI and Encoder Connections P3 Connector AC Power Options and AccessoriesPin Introduction to the MDrive42AC Plus Microstepping Page MDrive42AC Plus Microstepping Detailed Specifications Setup Parameters 76.2 Pin Assignment and Description Pin Assignment P1 I/O, SPI and Encoder Connections Outside Pins 1 Options and Accessories Part Interfacing Configuring Intentionally Left Blank Logic Interface and Connection Isolated Logic Input Pins and ConnectionsOptically Isolated Logic Inputs Step Clock DirectionQuadrature Up/DownDirection StepChannel a Channel BOptocoupler Reference Optocoupler ReferenceInput Connection Examples Open Collector Interface ExampleSwitch Interface Example Fault Temperature Warning OutputSwitch 7 Fault Output interfaced to an LED Minimum Required ConnectionsConnecting SPI Communications SPI Master with Multiple MDriveAC Plus Microstepping SPI Pins and ConnectionsSPI Clock Configuration Parameters and Ranges Using the IMS SPI Motor Interface InstallationColor Coded Parameter Values Motion Settings Screen Read-Only Part Serial Number Screen IMS SPI Motor Interface Menu OptionsFile ViewRecall UpgradeHelp Screen 1 The Motion Settings Configuration Screen Msel Microstep Resolution SelectionConnected/Disconnected Indicator FactorySet ExitScreen 2 I/O Settings Configuration Screen Enable Active High/LowInput Clock Type Input Clock FilterIMS Part Number/Serial Number Screen Fault IndicationIMS IMS Serial Number Upgrade Instructions IMS SPI Upgrader ScreenUpgrading the Firmware in the MDriveAC Plus Microstepping Initialization Screen Port MenuSPI Timing Notes Using User-Defined SPICheck Sum Calculation for SPI SPI Commands and Parameters MSBWrite SPI Communications SequenceIntentionally Left Blank Appendices MDriveAC Plus Microstepping Hardware Revision R121707 MDriveAC Plus Microstepping Motor Performance MDrive34AC 120VACMDrive34AC 240VAC Single LengthDouble Length Triple LengthMDrive42AC Plus Microstepping MDrive42AC 120VACOz-in/810 N-cm MDrive with Planetary Gearbox Section OverviewProduct Overview Selecting a Planetary GearboxFactors Calculating the Shock Load Output Torque TABReduction Ratio Nominal Output Torque Speed in Full Steps per SecondShock Load Output Torque =1.6 =1.7 =1.9Type of System System InertiaLead Screw Conveyor Belt Rack and PinionRotary Table Belt DriveChain Drive Figure B.6 Chain Drive System Inertia ConsiderationsMDrive34AC Plus2 Planetary Gearbox Parameters Planetary Gearbox for MDrive34AC Plus2PM81 Gearbox Ratios and Part Numbers MDrive42AC Plus2 Planetary Gearbox Parameters PM105 Planetary Gearbox for MDrive42AC Plus2PM105 Gearbox Ratios and Part Numbers MDrive42AC Plus2 Planetary Gearbox Parameters PM120 PM120 Gearbox Ratios and Part NumbersMD-CC300-000 USB to SPI Parameter Setup Cable Installation Procedure for the MX-CC300-000Installing the Cable/VCP Drivers Optional Cables and CordsetsFigure C.4 Hardware Update Wizard Screen Figure C.7 Hardware Update Wizard Finish Installation Determining the Virtual COM Port VCPAdapter To Controller InterfacePin Assignment and Wire Colors MD-CS10x-000 CordsetMD-CS20x-000 Cordset MD-CS201-000Interfacing the Internal Differential Optical Encoder Pin ConfigurationFactory Mounted Encoder Encoder Signals Differential EncoderFeatures Linear Slide OptionMDrive34Plus Linear Slide Speed-Force Limitations†Specifications Mechanical SpecificationsWarranty Excellence in Motion