SJ-122 Edge / Line Position Controller System
The SJ-122 is a high-speed intelligent EPC system designed for precise edge, line, and center guiding in roll-to-roll production. It combines advanced control logic, brushless servo driving, flexible sensor options, and reliable industrial protection to help improve web alignment accuracy and production stability.
Core Features
High-Speed Intelligent Control
Equipped with a 32-bit high-speed CPU, variable PI control algorithm, 0.5ms ultra-fast response, and 12-bit AD high-precision sampling, the system delivers faster and more accurate web correction than traditional controllers.
Three Guiding Modes
Supports left edge guiding, right edge guiding, and center guiding modes, making it suitable for different roll material alignment requirements in continuous production lines.
Brushless Servo Drive
The system uses a brushless servo motor with a precision ball screw structure. It provides accurate positioning, low maintenance, stable movement, and reliable thrust performance for long-term industrial operation.
Strong Anti-Interference Protection
Built-in digital filtering improves resistance to industrial interference. Multiple protection functions, including overcurrent, undervoltage, and motor stall protection, ensure safe and stable operation.
Sensor Options
US-400S Ultrasonic Edge Sensor
Suitable for transparent films, reflective materials, non-transparent films, paper, and other web materials that require stable non-contact detection. It is an ideal option for applications where photoelectric detection may be affected by material color, transparency, or surface reflection.
PS-400S Photoelectric Edge Sensor
Suitable for standard edge guiding, printed line tracking, and general roll material detection. It provides fast response and precise signal feedback for common printing, packaging, slitting, and rewinding applications.
Working Principle
During production, the sensor continuously detects the web edge, printed line, or center position. When the material deviates from the target position, the SJ-122 controller processes the signal through its intelligent control algorithm and sends correction commands to the brushless servo actuator. The actuator then moves the guiding mechanism through the precision ball screw to keep the material aligned during roll-to-roll operation.
Detect
The ultrasonic or photoelectric sensor detects web edge, line, or center position in real time.
Calculate
The controller analyzes material deviation through high-speed signal sampling and PI control logic.
Correct
The brushless servo actuator moves the guiding frame accurately to keep the web running in the correct position.
Technical Specifications
| Product Category | Web Guiding System / Edge Line Position Control System |
|---|---|
| Product Name | SJ-122 Edge / Line Position Controller System |
| Control Algorithm | Variable PI algorithm with no overshoot |
| CPU | 32-bit high-speed CPU |
| Response Time | 0.5ms ultra-fast response |
| Sampling Accuracy | 12-bit AD high-precision sampling |
| Guiding Modes | Left edge guiding / Right edge guiding / Center guiding |
| Sensor Options | US-400S Ultrasonic Sensor / PS-400S Photoelectric Sensor |
| Drive Structure | Brushless servo motor with precision ball screw |
| Rated Thrust Options | 1T / 2T / 4T / 5T |
| Stroke Options | ±40 mm / ±75 mm / ±100 mm / ±150 mm |
| Protection Functions | Overcurrent protection, undervoltage protection, motor stall protection, and digital filtering |
| Applicable Materials | Transparent film, non-transparent film, paper, printed web materials, laminated materials, and other roll materials |
| Applications | Printing, packaging, slitting, rewinding, film processing, paper processing, and roll-to-roll production lines |
Learn more about the working modes, sensor compatibility, parameter settings, wiring requirements and troubleshooting methods of this high-performance EPC controller.
- Photoelectric sensor: Suitable for edge tracking and line tracking of transparent or opaque film, with a detection accuracy of 0.05mm.
- Ultrasonic sensor: Not affected by material transparency. It is suitable for non-breathable materials such as film and paper, and does not require manual calibration.
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