NI 9501 Operating Instructions And Specifications
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NI 9501 Operating Instructions And Specifications

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OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9501
Stepper Drive
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  • Page 1 OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9501 Stepper Drive Français Deutsch ni.com/manuals...

  • Page 2: Safety Guidelines

    This document describes how to use the National Instruments 9501 module and includes specifications and pin assignments for the NI 9501. Visit and enter ni.com/info rdsoftwareversion determine which software you need for the modules you are using. For information about installing, configuring, and programming the system, refer to the system documentation.

  • Page 3: Safety Guidelines For Hazardous Locations

    Safety Guidelines for Hazardous Locations The NI 9501 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4, and Ex nA IIC T4 hazardous locations; and nonhazardous locations only.

  • Page 4: Electromagnetic Compatibility Guidelines

    II 3G and is suitable for use in Zone 2 hazardous locations, in ambient temperatures of –40 °C ≤ Ta ≤ 70 °C. If you are using the NI 9501 in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
  • Page 5 The inputs/outputs of this product can be Caution damaged if subjected to Electrostatic Discharge (ESD). To prevent damage, industry-standard ESD prevention measures must be employed during installation, maintenance, and operation. © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 6: Special Guidelines For Marine Applications

    In addition, take precautions when designing, selecting, and installing measurement probes and cables to ensure that the desired EMC performance is attained. NI 9501 Operating Instructions and Specifications ni.com...
  • Page 7 NI 9501 Hardware Overview The NI 9501 is a stepper motor drive for use with 2-phase hybrid stepper motors in either bipolar or unipolar winding configuration. It uses an advanced PWM algorithm that reduces torque ripple, lowers emissions, minimizes power loss, and creates smoother motion during microstepping.
  • Page 8 Refer to the NI 9501 topic in the LabVIEW Help, available by selecting Help»LabVIEW Help, for information about microstepping options. The NI 9501 also provides for phase current reduction after the motor stops moving for a certain amount of time using the Enable Current Reduction property in software.
  • Page 9 NI 9501 FPGA Signals Isolation Phase A+ Step H-Bridge Phase A– CPLD* Status Phase H-Bridge Phase B– – * CPLD = Complex Programmable Logic Device Figure 1. NI 9501 Block Diagram © National Instruments Corp. NI 9501 Operating Instructions and Specifications...
  • Page 10 Connecting the NI 9501 The NI 9501 has a 10-terminal detachable screw-terminal connector that provides connections for the stepper motor signals, a motor DC power supply, COM, and chassis ground. Refer to Figure 2 for the pin assignments. To ensure EMC compliance, special Caution considerations are required for all cable connections.
  • Page 11 Phase A+ Phase A– Phase B+ Phase B– Reserved Reserved Reserved Vsup (Chassis Ground) Figure 2. NI 9501 Connections © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 12: Motor Power Signals

    The stepper motor terminals on this drive are Caution energized when the module is enabled. Do not connect wires to or disconnect wires from the NI 9501 when it is enabled. Use a multiconductor cable with an overall shield and conductors of 20 AWG or larger for the motor power cable.
  • Page 13 The NI 9501 contains bipolar chopper drivers. Two-phase stepper motors come in 4-, 6-, and 8-wire variations. You must wire the stepper motors in a 4-wire configuration as shown in Figure 3. Never connect unused stepper motor terminals Caution to pin 9 (Chassis Ground) or to each other.
  • Page 14 Phase A– Phase B+ Phase A+ Phase A– Phase B+ Phase B– Phase B– Reserved Reserved Reserved Vsup *NC = Not Connected Figure 5. 6-Wire Series Stepper Motor Connection (Higher Torque, Lower Speed) NI 9501 Operating Instructions and Specifications ni.com...
  • Page 15 Phase B+ Phase A+ Phase A– Phase B– Phase B+ Phase B– Reserved Reserved Reserved Vsup *NC = Not Connected Figure 6. 6-Wire Half-Coil Stepper Motor Connection (Higher Speed, Lower Torque) © National Instruments Corp. NI 9501 Operating Instructions and Specifications...
  • Page 16 Phase A+ Phase A– Phase A+ Phase A– Phase B+ Phase B+ Phase B– Phase B– Reserved Reserved Reserved Vsup Figure 7. 8-Wire Series Stepper Motor Connection (Higher Torque, Lower Speed) NI 9501 Operating Instructions and Specifications ni.com...
  • Page 17 Phase A+ Phase A– Phase A+ Phase A– Phase B+ Phase B+ Phase B– Reserved Phase B– Reserved Reserved Vsup Figure 8. 8-Wire Parallel Stepper Motor Connection (Higher Speed, Lower Torque) © National Instruments Corp. NI 9501 Operating Instructions and Specifications...
  • Page 18 Phase A+ Phase A– Phase B+ Phase A+ Phase A– Phase B– Phase B+ Phase B– Reserved Reserved Reserved Vsup *NC = Not Connected Figure 9. 8-Wire Half-Coil Stepper Motor Connection NI 9501 Operating Instructions and Specifications ni.com...

  • Page 19: Wiring For High Vibration Applications

    Refer to Figure 10 for an illustration of using ferrules. Ferrule Figure 10. 10-Terminal Detachable Screw-Terminal Connector with Ferrule © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 20: Led Indicators

    LED Indicators The NI 9501 has four LEDs to display status information. 1 Enabled (green) 3 User (yellow) 2 Vsup (Motor Power) (green) 4 Fault (red) Enabled The Enabled LED (green) illuminates when the drive is enabled and the output power stage is active, and is flashing when the drive is disabled and the output power stage is inactive.
  • Page 21 You can define the User LED (yellow) to meet the needs of your application. Use the User LED I/O node to turn this LED on and off. Refer to the NI 9501 topic in the LabVIEW Help, available by selecting Help»LabVIEW Help, for information about the NI 9501 User LED I/O node.

  • Page 22: Hot-Swap Behavior

    Motor terminal (Phase A± or Phase B±) short to COM Hot-Swap Behavior The NI 9501 is always disabled when it is first inserted in the chassis, regardless of whether Vsup is present or not. You can enable the drive using the Enable Drive method in software. Refer to the NI 9501 topic in the LabVIEW Help, available by selecting Help»LabVIEW Help, for more information about enabling the...

  • Page 23: Cable Requirements For Emc Compliance

    Cable Requirements for EMC Compliance Select and install cables for the NI 9501 in accordance with the following requirements: • Do not tie the motor case to the NI 9501 chassis ground.
  • Page 24 Motor DC Power Supply Vsup Figure 11. NI 9501 Cable Connection • Clamp-on ferrites must be connected to the motor cable and Vsup cable as close to the module as possible with a full turn as shown in Figure 12. Placing the ferrite elsewhere on the cable noticeably impairs its effectiveness.
  • Page 25 Vsup cable diameter. Order the appropriate ferrite beads from NI. NI Part Number Aperture Size mm (inches) 781233-01 7.0 (0.275) 781233-02 10.2 (0.402) 777297-01 13.4 (0.528) © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 26: Specifications

    (4.24 A peak) Current reduction ......0%, 25%, or 50% Microstepping selections ....×2, 4, 8, 16, 32, 64, 128, 256 (software-selectable) Vsup capacitance ......750 µF MTBF ..........Contact NI for Bellcore MTBF specifications. NI 9501 Operating Instructions and Specifications ni.com...

  • Page 27: Drive Protection

    Power consumption from chassis Active mode ....... 500 mW max Sleep mode ......... 2.5 mW max Thermal dissipation (at 70 °C) Active mode ....... 1.5 W max Sleep mode ......... 2.5 mW max © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 28: Physical Characteristics

    Torque for screw terminals ....0.5 to 0.6 N · m (4.4 to 5.3 lb · in.) Ferrules ..........0.25 mm to 2.5 mm Weight..........144 g (5.1 oz) NI 9501 Operating Instructions and Specifications ni.com...
  • Page 29 This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. © National Instruments Corp. NI 9501 Operating Instructions and Specifications...
  • Page 30 Do not connect the NI 9501 to signals or use for Caution measurements within Measurement Categories II, III, or IV. Hazardous Locations U.S. (UL) .......... Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, AEx nA IIC T4 Canada (C-UL) .........

  • Page 31: Electromagnetic Compatibility

    Safety Standards The NI 9501 is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 For UL and other safety certifications, refer to the...

  • Page 32: Online Product Certification

    To obtain product certifications and the DoC for this product, visit ni.com/ , search by module number or product line, certification and click the appropriate link in the Certification column. NI 9501 Operating Instructions and Specifications ni.com...

  • Page 33: Shock And Vibration

    Refer to the manual for the chassis you are using for more information about meeting these specifications. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) ..–40 to 70 °C Storage temperature (IEC 60068-2-1, IEC 60068-2-2) ..–40 to 85 °C © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 34: Environmental Management

    NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers. For additional environmental information, refer to the NI and the Environment Web page at . This page ni.com/environment...
  • Page 35 National Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on Waste and Electronic Equipment, visit ni.com/environment/ weee National Instruments (RoHS) National Instruments RoHS (For information ni.com/environment/rohs_china about China RoHS compliance, go to ni.com/ environment/rohs_china © National Instruments Corp. NI 9501 Operating Instructions and Specifications...

  • Page 36: Where To Go For Support

    Finland 358 (0) 9 725 72511, France 01 57 66 24 24, Germany 49 89 7413130, India 91 80 41190000, Israel 972 3 6393737, Italy 39 02 41309277, Japan 0120-527196, Korea 82 02 3451 3400, Lebanon 961 (0) 1 33 28 28, NI 9501 Operating Instructions and Specifications ni.com...
  • Page 37 Sweden 46 (0) 8 587 895 00, Switzerland 41 56 2005151, Taiwan 886 02 2377 2222, Thailand 662 278 6777, Turkey 90 212 279 3031, United Kingdom 44 (0) 1635 523545 © National Instruments Corp. NI 9501 Operating Instructions and Specifications...
  • Page 38 LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks. Other product and company names mentioned herein are trademarks or trade names of their respective companies.

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