Overview
The Magpowr Digitrac digital tension control system is a precision tension readout and control module designed by Magnetic Power Systems, Inc. for web-based manufacturing processes. This microprocessor-driven solution delivers accurate, closed-loop tension monitoring across unwind, rewind, and point-to-point applications. With selectable 115 or 230VAC input and field-proven reliability, the Digitrac is commonly found in converting equipment, film lines, paper production, and packaging machinery where tension accuracy directly impacts product quality.
Key Features
- Microprocessor-based closed-loop control for precise web tension management
- Dual-voltage input (115/230VAC) with selectable 50/60 Hz operation
- Integrated touchpad keyboard for easy data entry and calibration
- Compatible with MAGPOWR and industry-standard load cell sensors
- Six independent setup configurations for multi-product environments
- Manual and automatic control modes with selectable taper tension for rewind optimization
Technical Specifications
- Supply Voltage: 115 or 230V rms, ±10%
- Supply Frequency: 50 or 60 Hz, sinusoidal
- Input Current: 0.25A maximum
- Output: 25 VDC maximum, 20 mA maximum
- Maximum Ambient Temperature: 40°C
- Front Panel Enclosure: IP65 (IEC 529)
- Main Enclosure: IP20 (IEC 529)
- Fuses: 1.6A (Littelfuse or equivalent)
- Sensor Support: MAGPOWR sensors (30 mAdc), 120-ohm sensors (45 mAdc)
- Power Supply Output: +5VDC (150 mAdc total capacity)
- Manufacturer: Magnetic Power Systems, Inc., Fenton, MO
Typical Applications
- Web extrusion and film production — maintaining consistent film thickness and product uniformity
- Textile and fabric manufacturing — controlling tension during weaving and finishing
- Paper and converting operations — optimizing roll quality and minimizing waste
- Flexible packaging lines — ensuring proper tension for seal and print quality
- Tape and label manufacturing — precise tension control for product consistency
- Rewind and unwind systems — taper tension for improved roll structure and handling
Compatibility & Replacements
Compatible With
- MAGPOWR load cell sensors and tension transducers
- 120-ohm resistive sensors and standard load cells
- PA-2 and PA-90 Power Amplifier modules
- Industrial web processing machinery with 115/230VAC power supply
Replaces / Drop-In Replacement For
- Original DIGITRAC (earlier model) — hardware identical, firmware may differ
- Verify exact model and control board number (3C118-2) before ordering for compatibility confirmation
Works With
- Standard 50/60 Hz AC power networks
- MAGPOWR calibration and control software
- Analog sensor interfaces (0–10 VDC, 4–20 mA, and MAGPOWR digital protocols)
- Legacy web-process control architectures requiring standalone tension modules
