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Applied Motion Products STR2 Hardware Manual

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Hardware Manual
STR2
Step Motor Drive
920-0059A
4/20/2012

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Summary of Contents for Applied Motion Products STR2

  • Page 1 Hardware Manual STR2 Step Motor Drive 920-0059A 4/20/2012...

  • Page 2: Table Of Contents

    920-0059A STR2 Hardware Manual 4/20/2012 Contents Safety Instructions ............................................. 3 Introduction ................................................5 Features ..................................................5 Block Diagram ............................................... 6 Getting Started ..............................................7 Mounting the Drive ............................................8 Connecting the Power Supply ........................................8 Choosing a Power Supply........................................... 10 Voltage .................................................

  • Page 3: Safety Instructions

    • It is vital to ensure that all system components are connected to earth ground. Electrical safety is impossible without a low-resistance earth connection. • The STR2 contains electrostatically sensitive components that can be damaged by incorrect handling. Discharge yourself before touching the product. Avoid contact with high insulating materials (artificial fabrics, plastic film, etc.).
  • Page 4 920-0059A STR2 Hardware Manual 4/20/2012 • In operation, depending on the degree of enclosure protection, the product can have bare components that are live or have hot surfaces. Control and power cables can carry a high volt- age even when the motor is not rotating.

  • Page 5: Introduction

    4/20/2012 Introduction Thank you for selecting an Applied Motion Products motor control. We hope our dedication to performance, quality and economy will make your motion control project successful. If there’ s anything we can do to improve our products or help you use them better, please call or fax.

  • Page 6: Block Diagram

    920-0059A STR2 Hardware Manual 4/20/2012 Block Diagram 12-48 VDC from external power supply 3.3/5/15V Regulators Voltage Sensors Status LEDs motor AMPLIFIER STEP Optical Digital Isolation Filter Overcurrent Sensors Steps/rev Run Current Optical Idle Current Isolation Step Noise Filter Self Test...

  • Page 7: Getting Started

    STR2 Hardware Manual 4/20/2012 Getting Started To use your STR2 step motor drive, you’ll need the following: • a 12 to 48 volt DC power supply. Please read the section Choosing a Power Supply for help in choosing the right power supply.

  • Page 8: Mounting The Drive

    920-0059A STR2 Hardware Manual 4/20/2012 Mounting the Drive You can mount your drive on the wide or the narrow side of the chassis using #6 screws. If possible, the drive should be securely fastened to a smooth, flat metal surface that will help conduct heat away from the chassis.
  • Page 9 920-0059A STR2 Hardware Manual 4/20/2012 Power Supply and Ground Connections Locate fuse in-line with “+” connection If you plan to use a regulated power supply you may encounter a problem with regeneration. If you rapidly decelerate a load from a high speed, much of the kinetic energy of that load is transferred back to the power supply.

  • Page 10: Choosing A Power Supply

    And you must decide what size of power supply (in terms of voltage and current) is needed for your application. Applied Motion offers three powers supplies that are excellent matches for the STR2 drive: PS50A24 (24V, 2.1A), PS150A24 (24V, 6.3A) and PS320A48 (48V, 6.7A).

  • Page 11: Multiple Drives Sharing One Power Supply

    The tables below and on the net page list the maximum current required for each motor at sev- eral common power supply voltages. Please consider this information when choosing a power supply. Table 1: STR2 Power Supply Current All motors connected as indicated. Current...

  • Page 12: System Wiring Recommendations

    920-0059A STR2 Hardware Manual 4/20/2012 Regeneration If you plan to use a regulated power supply you may encounter a problem with regeneration. If you rapidly decelerate a load from a high speed, much of the kinetic energy of that load is transferred back to the power supply.

  • Page 13: Connecting The Motor

    920-0059A STR2 Hardware Manual 4/20/2012 Connecting the Motor Never connect or disconnect the motor while the power is on. If the motor has a shield or grounding wire, please connect it to the chassis ground screw located on the chassis near the motor-power connector.

  • Page 14: Connecting Input Signals

    920-0059A STR2 Hardware Manual 4/20/2012 Connecting Input Signals The STR drives have three inputs: • STEP: a high speed digital input for step pulse commands, 5-24 volt logic • DIR: a high speed digital input for the direction signal, 5-24 volt logic •...

  • Page 15: Connection Examples: En

    920-0059A STR2 Hardware Manual 4/20/2012 Connection Examples: EN COM+ 5-24 STR2 switch or relay Power (closed=logic low) Supply Connecting an Input to a Switch or Relay 5-24 COM+ Power OUT+ Supply OUT– Connecting another drive to EN (When output closes, input closes)

  • Page 16: Fault Output

    920-0059A STR2 Hardware Manual 4/20/2012 FAULT Output The STR2 features a digital FAULT output. This output closes to FAULT+ signal a fault condition. FAULT- This output can be used to drive LEDs, relays and the inputs of other electronic devices like PLCs. The “+” (collector) and “-” (emitter) terminals of the output transistor are available at the connector.

  • Page 17: Configuring The Drive

    Step 1: Selecting a Motor and Setting the Current The STR2 is optimized for use with carefully selected motors. To select a motor, simply move switches B1, B2 and B3 to the setting that corresponds to the motor of your choice. You can do this while power is on, but it is safer to select the motor before applying power to the drive so that you do not risk applying too much current to your motor.

  • Page 18: Step 2: Fine Tuning The Motor Current

    At 70% current, the torque is reduced to 70% and the heating to about 50%. Switches A4 and A5 on the front of the STR2 drive are used to set the percent of rated current that will be applied to the motor. Please set them according to the illustration below.

  • Page 19: Step 4: Load Inertia

    0-4X Step 5: Step Size The STR2 requires a source of step pulses to command motion. This may be a PLC, an indexer, a motion controller or another type of device. The only requirement is that the device be able...
  • Page 20 920-0059A STR2 Hardware Manual 4/20/2012 Please choose the one that best matches the capability of your system. At lower step resolutions such as 200 steps/ rev (full step) and 400 steps/rev (half step), motors run a little rough and produce more audible noise than when they are microstepped (2000 steps/rev and beyond).

  • Page 21: Step 6: Step Pulse Type

    920-0059A STR2 Hardware Manual 4/20/2012 Step 6: Step Pulse Type Most indexers and motion controllers provide motion commands in the “Step and Direction” format. The Step signal pulses once for each motor step and the direction signal commands direction. However, a few PLCs use a different type of command signal: one signal pulses once for each desired step in the clockwise direction (called STEP CW), while a second signal pulses for counterclockwise motion (STEP CCW).

  • Page 22: Step 7: Step Pulse Noise Filter

    STEP and DIR inputs. There are two settings for this filter: 150 kHz works well for most applications,. If you are operating the STR2 at a high number of steps/rev and at high motor speeds, you will be commanding the drive at step rates above 150 kHz. In such cases, you should use the 2 MHz setting as shown below.

  • Page 23: Reference Materials

    920-0059A STR2 Hardware Manual 4/20/2012 Reference Materials Motor Outlines MOTOR LENGTH(L) HT08-020 30.0 mm HT08-021 46.5 mm HT08 Outline Drawing HT11 Outline Drawing 5014-842 Outline Drawing...
  • Page 24 920-0059A STR2 Hardware Manual 4/20/2012 MOTOR LENGTH(L) HT17-068 33±1 mm ADD ‘D’ TO END OF PART NUMBER TO ADD HT17-071 39±1 mm REAR SHAFT AND ENCODER HOLES HT17-075 47±1 mm HT17-268 33.3 mm MAX HT17-271 39.8 mm MAX HT17-275 48.3 mm MAX HT17 Outline Drawing ADD ‘D’...

  • Page 25: Torque-Speed Curves

    920-0059A STR2 Hardware Manual 4/20/2012 Torque-Speed Curves HT08‐020, STR2 12 VDC 24 VDC Connection: 4 leads Drive settings: 0.42A/phase, 20000 steps/rev HT08‐021, STR2 12 VDC 24 VDC Connection: 4 leads Drive settings: 0.42A/phase, 20000 steps/rev...
  • Page 26 920-0059A STR2 Hardware Manual 4/20/2012 HT11‐012, STR2 12 VDC 24 VDC Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev HT11‐013, STR2 12 VDC 24 VDC Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev...
  • Page 27 920-0059A STR2 Hardware Manual 4/20/2012 5014‐842, STR2 12 VDC 24 VDC Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev HT17‐268, STR2 12 VDC 24 VDC 48 VDC Connection: parallel Drive settings: 1.61A/phase, 20000 steps/rev...
  • Page 28 920-0059A STR2 Hardware Manual 4/20/2012 HT17‐271, STR2 12 VDC 24 VDC 48 VDC Connection: parallel Drive settings: 2.04A/phase, 20000 steps/rev HT17‐275, STR2 12 VDC 24 VDC 48 VDC Connection: parallel Drive settings: 2.04A/phase, 20000 steps/rev...
  • Page 29 920-0059A STR2 Hardware Manual 4/20/2012 HT23‐595, STR2 12 VDC 24 VDC 48 VDC Connection: series Drive settings: 2.2A/phase, 20000 steps/rev HT23‐598, STR2 12 VDC 24 VDC 48 VDC Connection: series Drive settings: 2.2A/phase, 20000 steps/rev...

  • Page 30: Motor Heating

    920-0059A STR2 Hardware Manual 4/20/2012 HT23‐601, STR2 12 VDC 24 VDC 48 VDC Connection: series Drive settings: 2.2A/phase, 20000 steps/rev Motor Heating Step motors convert electrical power from the driver into mechanical power to move a load. Because step motors are not perfectly efficient, some of the electrical power turns into heat on its way through the motor.
  • Page 31 920-0059A STR2 Hardware Manual 4/20/2012 The actual temperature of the motor depends on how much heat is conducted, convected or radiated out of it. Our measurements were made in a 40°C (104°F) environment with the motor mounted to an aluminum plate sized to provide a surface area consistent with the motor power dissipation.
  • Page 32 920-0059A STR2 Hardware Manual 4/20/2012 5014-842 Max Duty cycle vs Speed 1.2 Amps/phase 40°C ambient temp on 4.75 x 4.75 x .25 Aluminum Plate 4 75 4 75 25 Al Pl t Speed (RPS) HT17-268 Max Duty cycle vs Speed 2.04A/phase, parallel connected...
  • Page 33 920-0059A STR2 Hardware Manual 4/20/2012 HT17-271 Max Duty cycle vs Speed 2.04A/phase, parallel connected 40°C ambient temp on 4.75 x 4.75 x .25 Aluminum Plate 4 75 4 75 25 Al Pl t Speed (RPS) HT17-275 Max Duty cycle vs Speed 2.04A/phase, parallel connected...

  • Page 34: Drive Heating

    4/20/2012 Drive Heating While STR2 drivers efficiently transmit power between the power supply and motor, they do generate some heat in the process. This will cause the temperature of the drive to rise above the surrounding air temperature and may also require that the drive be mounted to a heat conducting metal surface.

  • Page 35: Mechanical Outline

    920-0059A STR2 Hardware Manual 4/20/2012 Mechanical Outline...

  • Page 36: Technical Specifications

    920-0059A STR2 Hardware Manual 4/20/2012 Technical Specifications Amplifier Digital MOSFET. 16 kHz PWM. Suitable for driving two phase step motors with four, six or eight leads. Protection against over-voltage, under-voltage, over-temp, and short circuit. Supply voltage: 12-48 VDC Under voltage alarm: 10 VDC...

  • Page 37: Mating Connectors And Accessories

    920-0059A STR2 Hardware Manual 4/20/2012 Mating Connectors and Accessories Mating Connectors Motor/power supply: Phoenix Contact 1803617, included with drive. Signals: Phoenix Contact 1840405, included with drive. Accessories Regeneration Clamp: Applied Motion Products RC-050.

  • Page 38: Alarm Codes

    Alarm Codes In the event of a drive fault or alarm, the green LED will flash one or two times, followed by a series of red flashes. The pat- tern repeats until the alarm is cleared. Code Error solid green no alarm, motor disabled flashing green no alarm, motor enabled 1 green, 3 red over temperature...
  • Page 39 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Applied Motion STR2...

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