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SMC-3(PC)

AT 3 axis stepper controller Card
  • Hersteller Contec
  • Kategorie: Motion Control / EtherCAT ISA
  • The CONTEC SMC‑3(PC) is a high‑speed, three‑axis stepper motor controller card designed for ISA‑bus (AT‑bus) industrial PCs. It provides precise pulse‑train output control for stepper or pulse‑input servo motors, enabling accurate positioning, speed, and acceleration/deceleration control. The board integrates opto‑isolated I/O for limit switches and general‑purpose signals, supports up to 6 Mpps pulse output, and includes dedicated interrupt handling for real‑time motion control applications.
- Three‑Axis Independent Control: Supports simultaneous control of up to three stepper or servo motors via pulse‑train output.
- High‑Speed Pulse Output: Adjustable pulse rate from 92 pps to 6 Mpps, suitable for high‑precision motion systems.
- Multiple Output Modes: Supports 2‑pulse (CW/CCW) and common‑pulse (Pulse/Direction) output formats, selectable via software.
- Opto‑Isolated I/O: All limit switch, general input, and output channels are optically isolated (12–24 V DC) to protect against electrical noise and ground loops.
- Dedicated Limit and Slowdown Inputs: Each axis includes four limit‑related inputs (ORG, +LIM, −LIM, and Slowdown) for safe and accurate positioning.
- Emergency Stop and MPG Support: Two opto‑isolated emergency stop inputs per axis; supports MPG1020 pulse generator chips for manual pulse generation.
- Independent Interrupt Channels: Four interrupt request channels (IRQ3–7, 9–12, 14, or 15) can be assigned for pulse completion or error events.
- High‑Reliability Open‑Collector Outputs: Two opto‑isolated open‑collector outputs per axis rated at 35 V DC, 200 mA maximum.
- Compact ISA Form Factor: Standard AT‑bus card size 163.0 mm (L) × 122.0 mm (H) for easy integration into industrial PCs.
- Software Support: Includes API‑PAC(W32) driver library for Windows, providing Win32 API‑compatible motion control functions.
- Industrial‑Grade Design: Designed for continuous operation in factory automation, robotics, and precision positioning systems.

Ursprungsland: Japan

Zolltarifnummer: 8473 3020 000

Comprehensive Product Summary – SMC‑3(PC) 3‑Axis Stepper Controller Card




### 1. Product Overview

Product Name: SMC‑3(PC)
Model Number: SMC‑3(PC)
Series: SMC Motion Controller Series
Article Number: SMC‑3(PC)
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Type: 3‑Axis Stepper Motor Controller Card
Bus Interface: ISA / AT Bus
Category: Motion Controller / Industrial Automation Interface Board
Product Description:
The CONTEC SMC‑3(PC) is a high‑speed, three‑axis stepper motor controller card designed for ISA‑bus (AT‑bus) industrial PCs. It provides precise pulse‑train output control for stepper or pulse‑input servo motors, enabling accurate positioning, speed, and acceleration/deceleration control. The board integrates opto‑isolated I/O for limit switches and general‑purpose signals, supports up to 6 Mpps pulse output, and includes dedicated interrupt handling for real‑time motion control applications.




### 2. Key Features

- Three‑Axis Independent Control: Supports simultaneous control of up to three stepper or servo motors via pulse‑train output.
- High‑Speed Pulse Output: Adjustable pulse rate from 92 pps to 6 Mpps, suitable for high‑precision motion systems.
- Multiple Output Modes: Supports 2‑pulse (CW/CCW) and common‑pulse (Pulse/Direction) output formats, selectable via software.
- Opto‑Isolated I/O: All limit switch, general input, and output channels are optically isolated (12–24 V DC) to protect against electrical noise and ground loops.
- Dedicated Limit and Slowdown Inputs: Each axis includes four limit‑related inputs (ORG, +LIM, −LIM, and Slowdown) for safe and accurate positioning.
- Emergency Stop and MPG Support: Two opto‑isolated emergency stop inputs per axis; supports MPG1020 pulse generator chips for manual pulse generation.
- Independent Interrupt Channels: Four interrupt request channels (IRQ3–7, 9–12, 14, or 15) can be assigned for pulse completion or error events.
- High‑Reliability Open‑Collector Outputs: Two opto‑isolated open‑collector outputs per axis rated at 35 V DC, 200 mA maximum.
- Compact ISA Form Factor: Standard AT‑bus card size 163.0 mm (L) × 122.0 mm (H) for easy integration into industrial PCs.
- Software Support: Includes API‑PAC(W32) driver library for Windows, providing Win32 API‑compatible motion control functions.
- Industrial‑Grade Design: Designed for continuous operation in factory automation, robotics, and precision positioning systems.




### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Number of Controlled Axes | 3 independent axes |
| Pulse Output Type | Open collector (software‑selectable positive/negative logic) |
| Output Signal Format | CW/CCW or Pulse/Direction |
| Pulse Rate Range | 92 pps – 6 Mpps |
| Output Rating | +35 V DC, 200 mA max per channel |
| Controller Chip | 3 × MYCOM MPG1020 pulse generator LSIs |
| Encoder Input | Not applicable (pulse output control board) |
| Limit Signal Inputs | 4 signals / axis (ORG, +LIM, −LIM, Slowdown) |
| Limit Input Type | Opto‑isolated (12–24 V DC) |
| Limit Input Resistance | 3.3 kΩ |
| General‑Purpose Inputs | 2 signals / MPG (emergency stop, jumper‑selectable) |
| General Input Type | Opto‑isolated (12–24 V DC) |
| General Input Resistance | 3.3 kΩ |
| General‑Purpose Outputs | 2 signals / axis |
| Output Type | Opto‑isolated open collector |
| Output Rating | +35 V DC, 200 mA max |
| Interrupts | 4 IRQ channels (IRQ3–7, 9–12, 14, 15 selectable) |
| I/O Address Occupation | 4 ports |
| Power Consumption | +5 V DC ± 5 %, 600 mA max |
| Bus Interface | ISA (AT Bus) |
| Board Dimensions | 163.0 mm (L) × 122.0 mm (H) |
| Connector Type | 37‑pin D‑SUB female |
| Operating Environment | 0 – 50 °C, 10 – 90 % RH (non‑condensing) |
| Storage Environment | −10 – 60 °C |
| Weight | Approx. 200 g |
| Compliance | RoHS‑compliant, lead‑free construction |




### 4. Functionality

The SMC‑3(PC) functions as a three‑axis motion controller that outputs pulse trains corresponding to motion parameters defined by the host PC. Each axis can be programmed for target position, velocity, and acceleration/deceleration profiles. The board’s internal MPG1020 LSIs generate precise pulse sequences without imposing CPU load, ensuring deterministic motion timing.

Operating Principle:
- The host PC sends motion commands via the ISA bus using the API‑PAC(W32) library.
- The controller generates pulse trains (CW/CCW or Pulse/Direction) to drive external stepper or servo amplifiers.
- Limit switch inputs (ORG, +LIM, −LIM, Slowdown) provide feedback for homing, travel limits, and deceleration control.
- Emergency stop inputs can immediately halt motion.
- Opto‑isolated outputs can signal external devices (e.g., relays, alarms, or PLCs) upon motion completion or error detection.

Typical Applications:
- Multi‑axis stepper motor positioning systems
- CNC machinery and precision stage control
- Semiconductor wafer handling and inspection equipment
- Automated optical alignment systems
- Robotics and pick‑and‑place mechanisms
- Laboratory automation and test instrumentation

Compatibility:
- Compatible with standard ISA/AT‑bus industrial PCs.
- Works with stepper or servo drivers that accept pulse‑train inputs (CW/CCW or Pulse/Direction).
- Fully supported by CONTEC’s API‑PAC(W32) software for Windows environments.




### 5. Components & Accessories

Included Items:
- SMC‑3(PC) controller board
- User manual and setup documentation
- API‑PAC(W32) driver software (downloadable)

Optional Accessories:
- Cables:
- *PCB37P* or *PCB37PS* – 37‑pin D‑SUB connection cables (required for external wiring)
- *PCA37P* / *PCA37PS* – alternative cable assemblies
- *PCB37P* – standard 37‑pin cable for signal breakout
- Terminal Blocks:
- *DTP‑3(PC)*, *DTP‑4(PC)* – terminal block units for easy field wiring
- *EPD‑37A*, *EPD‑37* – detachable terminal panels
- Connectors:
- *CN5‑D37M* – mating D‑SUB connector set
- Software Tools:
- API‑PAC(W32) library for Windows
- Sample programs and diagnostic utilities

Connector Pinout:
37‑pin D‑SUB female connector providing all axis pulse outputs, limit switch inputs, general I/O, and power reference signals.




### 6. Installation & Setup

System Requirements:
- IBM‑compatible industrial PC with available ISA (AT) expansion slot
- +5 V DC power supply from the PC backplane (600 mA max)
- Windows OS (supported by API‑PAC(W32) driver)

Installation Procedure:
1. Power off the PC and insert the SMC‑3(PC) into an available ISA slot.
2. Secure the board using the bracket screw.
3. Connect external devices (motors, limit switches, sensors) via the 37‑pin D‑SUB connector using the recommended cable (PCB37P or PCB37PS).
4. Install the API‑PAC(W32) driver and configure I/O addresses and IRQ settings through the provided utility.
5. Verify communication and motion output using sample test software.

Mounting Options:
- Standard ISA slot mounting inside industrial PC chassis.
- External wiring via shielded D‑SUB cable to terminal block modules.

Configuration:
- Select output logic (positive/negative) via software.
- Assign IRQ channels (IRQ3–7, 9–12, 14, 15).
- Configure motion parameters (speed, acceleration, deceleration, target position) through API commands.




### 7. Performance & Capabilities

Speed and Resolution:
- Pulse output frequency adjustable from 92 pps to 6 Mpps, enabling both slow precision positioning and high‑speed motion.
- Supports fine step resolution for micro‑stepping drives.

Capacity and Control:
- Three independent motion channels with synchronized or individual operation.
- Each axis supports four limit inputs and two general I/O lines.
- Interrupt‑driven architecture ensures real‑time response to motion completion or error conditions.

Efficiency:
- Hardware‑based pulse generation offloads the host CPU, minimizing latency.
- Opto‑isolation enhances noise immunity in electrically harsh environments.

Limitations:
- ISA bus interface restricts use to legacy or industrial PCs with AT‑bus slots.
- No onboard encoder feedback; relies on external motor driver feedback if required.
- Maximum output current limited to 200 mA per channel (open collector).




### 8. Standards & Compliance

- Bus Standard: ISA (AT Bus) compliant
- Electrical Safety: Opto‑isolated I/O for 12–24 V DC signals
- Environmental Compliance: RoHS‑compliant, lead‑free construction
- EMC Considerations: Designed for industrial environments with noise‑resistant I/O circuitry
- Connector Standard: 37‑pin D‑SUB female (industry standard pin spacing)
- Software Interface: Windows Win32 API‑compatible via CONTEC API‑PAC(W32)
- Manufacturer Quality: Produced under CONTEC’s ISO‑certified manufacturing processes




### 9. Additional Information

Warranty & Support:
- Standard CONTEC limited warranty (typically one year; refer to manufacturer policy).
- Technical support available via CONTEC’s global portal: [www.contec.com](http://www.contec.com).
- Firmware and driver updates downloadable from the CONTEC website.

Maintenance:
- Periodic inspection of connectors and cables recommended.
- Ensure proper grounding and shielding to maintain signal integrity.
- Clean board contacts with antistatic tools when servicing.

Software Updates & Development:
- API‑PAC(W32) provides a comprehensive function library for motion control programming in C/C++ or Visual Basic.
- Sample source code and diagnostic utilities included.
- Compatible with CONTEC’s broader motion control ecosystem (SMC‑2P, SMC‑4P, SMC‑4DF‑PCI, etc.), allowing scalable multi‑axis systems.

Ordering Information:
- Model: SMC‑3(PC)
- Description: 3‑Axis Stepper Motor Controller Card for ISA Bus
- Optional Accessories: PCB37P/PCB37PS cables, DTP‑3(PC)/DTP‑4(PC) terminal blocks, EPD‑37A/EPD‑37 panels
- Software: API‑PAC(W32) driver library (Windows)

Typical System Integration Example:
- Industrial PC (ISA bus) → SMC‑3(PC) → Stepper Driver (Pulse/Direction) → Stepper Motor
- Limit switches and sensors connected to opto‑isolated inputs
- Motion control executed via API‑PAC(W32) commands from host application




### Summary

The CONTEC SMC‑3(PC) is a robust, high‑speed 3‑axis stepper motor controller designed for ISA‑bus industrial PCs. It delivers precise pulse‑train control up to 6 Mpps, supports multiple output formats, and provides opto‑isolated I/O for reliable operation in electrically noisy environments. With its dedicated MPG1020 hardware pulse generators, flexible interrupt handling, and comprehensive Windows API support, the SMC‑3(PC) is ideal for multi‑axis motion control in manufacturing automation, robotics, and precision instrumentation.

Its combination of hardware‑based pulse generation, software‑configurable logic, and industrial‑grade isolation ensures dependable performance and long‑term reliability in demanding automation systems.

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