AMCI SD3520 – Stepper/Servo Indexer Drive Module | SD Series Platform
Engineering Background
Advanced Micro Controls Inc. (AMCI) has been a leading innovator in motion control and PLC-integrated automation since 1985. The SD Series represents AMCI’s flagship line of intelligent stepper and servo indexer modules, engineered to deliver deterministic, high-precision motion directly from standard PLC platforms without the need for a dedicated motion controller.
Product Positioning
The AMCI SD3520 is a standalone stepper/servo indexer drive module designed for engineers who demand reliable, programmable motion control tightly integrated with their existing PLC infrastructure. It eliminates the complexity of external motion controllers while providing full indexing, homing, and velocity control capabilities — making it the preferred choice for OEM machine builders and system integrators in demanding industrial environments.
Complete Technical Specifications
- Model: SD3520
- Manufacturer: AMCI (Advanced Micro Controls Inc.)
- Series: SD Series Stepper/Servo Indexer
- Drive Type: Stepper / Servo Indexer Module
- Output Current: Up to 3.5 A/phase (peak)
- Input Voltage: 24 VDC (logic supply)
- Motor Compatibility: 2-phase stepper motors; compatible servo feedback configurations
- Step Resolution: Programmable microstepping (up to 51,200 steps/rev)
- Communication Interface: PLC backplane / network module (platform-dependent)
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -40°C to 85°C
- Humidity: 5% to 95% non-condensing
- Enclosure Rating: Open frame (panel-mount)
- Weight: Approx. 1,520 g
- Certifications: CE, UL (verify with current AMCI datasheet)
- Country of Origin: USA
Proven Application Environments
- Automated assembly lines requiring precise indexing and positioning
- Packaging machinery with multi-axis coordinated motion
- Conveyor and material handling systems with PLC-driven motion profiles
- Semiconductor and electronics manufacturing equipment
- Medical device assembly requiring repeatable, low-vibration motion
- Printing and labeling machines with high-speed indexing requirements
- Robotics and gantry systems integrated with Allen-Bradley or other PLC platforms
Engineering Advantages
- PLC-Native Integration: Mounts directly to PLC backplane — no external motion controller required, reducing panel footprint and wiring complexity.
- Programmable Microstepping: Configurable step resolution minimizes motor resonance and delivers smooth, quiet operation across the full speed range.
- Deterministic Motion Execution: Motion commands execute within the PLC scan cycle, ensuring synchronization with process logic and I/O events.
- Comprehensive Homing Modes: Multiple homing strategies (limit switch, encoder index, torque-based) simplify machine startup and recovery routines.
- Fault Diagnostics: Onboard fault detection with status bits mapped to PLC registers for rapid troubleshooting without external tools.
- Compact Form Factor: Single-slot module design maximizes rack density in space-constrained control panels.
System Architecture & Signal Flow
The SD3520 interfaces directly with the PLC backplane, receiving motion commands (target position, velocity, acceleration, deceleration) via mapped register words. The internal indexer processes the motion profile and outputs step/direction signals to the connected stepper or servo motor driver stage. Encoder feedback (if applicable) is processed onboard for closed-loop position verification. Status words are continuously written back to the PLC for real-time monitoring of position, velocity, fault state, and motion completion flags.
Signal Flow: PLC CPU → Backplane Register Map → SD3520 Indexer → Step/Dir Output → Motor Driver → Motor Encoder Feedback → SD3520 → PLC Status Registers
Sourcing & Quality Verification
- All AMCI SD3520 units sourced by Konmask.com are procured through verified industrial distribution channels.
- Each unit undergoes incoming inspection including visual examination, label verification, and functional power-on testing where applicable.
- Serialization and date codes are documented and available upon request for traceability.
- Counterfeit-risk mitigation: Konmask does not source from grey-market or unverified brokers. Certificate of conformance available on request.
Procurement Process
- Confirm Part Number: Verify SD3520 against your BOM and AMCI datasheet revision.
- Request Quote: Contact support@konmask.com with quantity, required lead time, and destination country.
- Order Confirmation: Purchase order accepted via email; proforma invoice issued within 1 business day.
- Shipping: DHL / FedEx international express; EXW Xiamen or CIF destination available.
- Documentation: Commercial invoice, packing list, and CoC provided with every shipment.
Technical FAQ
Q: Is the SD3520 compatible with Allen-Bradley ControlLogix or CompactLogix?
A: The SD Series is designed for AMCI’s own network modules and specific PLC platforms. Confirm compatibility with your PLC family via the AMCI SD3520 datasheet or contact our technical team.
Q: Can the SD3520 drive a servo motor directly?
A: The SD3520 outputs step/direction signals suitable for servo drives with step/dir input. It does not include an integrated servo amplifier stage.
Q: What is the warranty on this unit?
A: Konmask provides a 90-day functional warranty on all verified units. Extended warranty and exchange programs available — contact support@konmask.com.
Q: Is a datasheet or wiring diagram available?
A: Yes. Request the AMCI SD3520 datasheet and wiring guide via support@konmask.com.
Q: What is the lead time for in-stock units?
A: Typically 3–7 business days for international express delivery from Xiamen, China.
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