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STR Stepper Drives

Product catalog summary

Overview: The document provides detailed technical specifications and features of the STR series stepper drives, including STR2, STR4, and STR8 models, which are designed to drive motors ranging from HT08 to HT34. These drives offer high-performance step motor control with features like anti-resonance, microstepping, and microstep emulation.

Specifications:

Amplifier Type: Dual H-bridge, 4 quadrant.
Current Control: STR2 uses 4 state PWM at 16 kHz, while STR4/8 uses 20 kHz.
Output Current: Varies by model, with STR2 supporting 0.3 - 2.2 A/phase, STR4 supporting 1.12 - 4.5 A/phase, and STR8 supporting 2.35 - 8.0 A/phase.
Power Supply Requirements: External power supply needed, with voltage requirements varying by model.
Protection: Includes over-voltage, under-voltage, and motor/wiring shorts protection.
Idle Current: Switch selectable between 50% or 90% of running current.
Modes of Operation: Step (pulse) & direction or CW/CCW pulse, selectable via jumper.
Step Resolution: Selectable via dip switch, offering resolutions from 200 to 20000 steps/rev.

Features:

Anti-Resonance: Improves system stability and performance by eliminating midrange instability.
Microstep Emulation: Provides smooth motion by synthesizing fine microsteps from coarse steps.
Self Test: Allows automatic motor testing via dip switch.

Motor Selection and Configuration: Optimized current settings for standard motors are stored on the drive and selectable via on-board switches. Configuration includes running current, idle current, load inertia ratio, and step resolution.

Accessories: Includes matched power supplies (24VDC, 150W and 48VDC, 320W) and the RC-050 regeneration clamp to prevent drive damage from motor regeneration.

Agency Approvals: RoHS, CE (EMC and LVD).

Dimensions and Weight: Varies by model, with STR2 being more compact and lighter than STR4/8.

Operating Conditions: Operating temperature ranges from 0 to 85 ºC, with ambient temperature requirements for proper mounting.

Conclusion: The STR series stepper drives offer a robust solution for step and direction applications, providing high performance and flexibility with simple setup and configuration.

Catalog excerpts

Stepper Drives High Performance Step Motor Control Three versions: STR2, STR4 and STR8 capable of driving motors from HT08 to HT34. #FFFF When over a dark color... Switch Selectable Parameters Anti-Resonance Microstepping Microstep Emulation Self Test Simple Setup - No Software Required Motor Selection - Optimized current settings for standard motors are stored on the drive and are selectable via on-board rotary or dip switches Drive Configuration - On-board dip switches are used to configure running current, idle current, load inertia ratio and step resolution. For more information, please visit www.applied-motion.com/STR

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Specifications AMPLIFIER TYPE CURRENT CONTROL OUTPUT CURRENT STR2: 0.3 - 2.2 A/phase (peak of sine) STR4: 1.12 - 4.5 A/phase (peak of sine) STR8: 2.35 - 8.0 A/phase (peak of sine) POWER SUPPLY STR2: External 12 - 48 VDC power supply required STR4: External 24 - 48 VDC power supply required STR8: External 24 - 75 VDC power supply required Over-voltage, under-voltage, motor/wiring shorts (phase-to-phase, phase-to-ground) IDLE CURRENT 50% or 90% of running current, switch selectable Step (pulse) & direction or CW/CCW pulse (pulse-pulse); selected via jumper under drive cover STEP RESOLUTION Dip...

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STR2 Motor Table & Dimensions STR2 Motors Switch Holding Torque Rotor Inertia

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STR4/STR8 Motor Tables & Dimensions STR4 Motors Switch Holding Torque Rotor Inertia Holding Torque Rotor Inertia Reserved for custom configurations Reserved for custom configurations Reserved for custom configurations Reserved for custom configurations Reserved for custom configurations

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Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev 12V, Connection: 4 leads Drive settings: 0.42A/phase, 20000 steps/rev Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev Connection: 4 leads Drive settings: 1.2A/phase, 20000 steps/rev 24V, Connection: Parallel 20000 steps/rev 48V, Connection: Parallel 20000 steps/rev 24V, Connection: Series Drive settings: 2.2A/phase, 20000 steps/rev 48V, Connection: Series Drive settings: 2.2A/phase, 20000 steps/rev

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STR4/STR8 Torque Curves HT17 with STR4 Connection: Parallel 24v Power Supply , 20,000 steps/rev Connection: Parallel 48v Power Supply , 20,000 steps/rev Connection: Parallel 24v Power Supply. 20,000 steps/rev Connection: Parallel, 48v Power Supply , 20,000 steps/rev Connection: Parallel 24v Power Supply , 20,000 steps/rev Connection: Parallel, 48v Power Supply , 20,000 steps/rev Connection: Parallel, 60V Power Supply, 20,000 steps/rev Connection: Parallel Power Supply 48V, 20,000 steps/rev

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Step & Direction ▪▪ Step & direction ▪▪ CW & CCW pulse Best value for step & direction applications Anti-Resonance/Electronic Damping Run/Stop (Toggle Switch) Step motor systems have a natural tendency to resonate at certain speeds. The STR drives automatically calculate the system’s natural frequency and apply damping to the control algorithm. This greatly improves midrange stability, allows for higher speeds, greater torque utilization, and improves settling times. Speed (Potentiometer) Delivers better motor performance and higher speeds Microstep Emulation With Microstep Emulation, low resolution...

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STR Stepper Drives

STR Stepper Drives

Catalog excerpts

All Applied Motion Products catalogs and technical brochures