Digital tension controller KDT series

webclutch and brake

Overview
The XW Machinery KDT-C-1000 Automatic Web Tension Controller is the C-type model of the KDT Automatic Tension Controller Series, designed for practical and cost-effective automatic tension control in winding, unwinding, slitting, printing, laminating, coating and other roll-to-roll processing machinery. Positioned as a cost-effective dual-station automatic tension controller, it combines automatic tension feedback, adjustable proportional and integral control, dual 24V constant-current outputs, taper tension control, dual-station roll change functions and RS485 communication.

Key Selling Points

• Fully automatic constant tension control for roll-to-roll processing lines
• Practical on-site parameter adjustment (menu-based)
• Dual 24V constant-current outputs for direct drive of magnetic powder clutches and brakes
• Dedicated dual-station roll change control with adjustable shaft-change output ratio
• Taper tension control to compensate roll build-up
• Hall-switch automatic pause function to stop tension adjustment when the machine is stationary
• RS485 communication and configurable address / baud rate for integration and multi-controller synchronization

Product Features (detailed)

• Fully automatic constant tension control
• Designed for tension feedback winding and unwinding applications
• KDT Series C-type model with 1000 N·m range designation
• Adjustable proportional gain and adjustable integral time (PID-like tuning: proportional + integral)
• Forward and reverse adjustment mode selection for flexible installation
• Two tension detector inputs (supports dual sensors)
• Dual 24V constant-current outputs (two channels) to drive magnetic powder clutches / brakes directly
• Single 0–5V analog auxiliary output (configurable to 0–10V)
• Dual-station roll change control and adjustable shaft-change output ratio
• Taper tension control for diameter-dependent tension adjustment
• Hall switch automatic pause to stop automatic adjustment when no motion detected (approx. 1s)
• Limit output relay supported
• RS485 communication; configurable address and baud rate
• Supports synchronized multi-controller operation for distributed tension control points
• LCD display with 40-segment digital tension indication and menu-based parameter adjustment for easy on-site commissioning
• Designed for practical on-site commissioning and operation without complex programming interfaces

Dual 24V Constant-Current Output and Auxiliary Outputs

• Two independent 24V constant-current outputs designed to drive magnetic powder clutches and magnetic powder brakes
• 1 × 0–5V analog auxiliary output standard; analog output configurable up to 0–10V for integration with external control equipment

Dual-Station Roll Change Control

• Dedicated dual-station switching system to support frequent roll replacement or continuous production
• Adjustable shaft-change output ratio and preset output restoration to reduce sudden tension changes during station switching
• Automatic tension adjustment after station switching to reduce tension fluctuation and improve roll-change stability

Hall Switch Automatic Pause Function
The controller supports a Hall-switch pause function: when no Hall pulse is detected for approximately one second after the machine stops, the controller can pause tension adjustment to avoid continuous output increases while the machine is stationary.

Taper Tension Control
The controller supports taper tension control to modify tension characteristics as roll diameter changes during winding; useful for materials and processes requiring diameter-dependent tension profiles.

RS485 Communication & Multi-Controller Synchronization
RS485 interface with configurable communication address and baud rate. Supports synchronized operation of multiple controllers for machines with several coordinated tension control points.

Easy On-Site Operation

• Menu-based parameter adjustment on an LCD interface with 40-segment tension indication
• Direct tuning of proportional gain, integral time, direction setting and taper control during commissioning
• Designed for OEM machine builders and production lines that require straightforward on-site tuning

Typical Applications

• Dual-station unwinding and rewinding machines
• Slitting machines and rewinders
• Printing machines and label production systems
• Flexible packaging and paper converting machinery
• Plastic film processing, laminating and coating lines
• Textile machinery and nonwoven production lines
• Lithium battery material processing equipment and other roll-to-roll processing

Complete Web Handling Solutions
The KDT-C-1000 is intended to be integrated with tension sensors, magnetic powder clutches/brakes, air expanding shafts, differential shafts and web guiding systems to form a complete web handling and tension control solution for industrial winding and converting machinery.

Quality & Supply
Manufactured and tested to verify main operating functions and output performance. Designed for OEM and factory-direct supply and wholesale distribution to machinery manufacturers and industrial buyers.

Table: Technical summary
Item | Specification
Product Name | KDT-C-1000 Automatic Web Tension Controller
Series | KDT Automatic Series
Model Type | C Type
Range Designation | 1000 N·m
Control Type | Fully Automatic Constant Tension Control
Control Adjustment | Proportional Gain + Integral Time
Feedback Input | Two Tension Detectors
Main Output | 2 × 24V Constant-Current Outputs
Compatible Actuators | Magnetic Powder Brake / Magnetic Powder Clutch
Auxiliary Output | 1 × 0–5V, configurable to 0–10V
Communication | RS485
Communication Settings | Adjustable Address / Baud Rate
Multi-Unit Control | Supports Synchronized Multi-Controller Operation
Roll Change Control | Dual-Station Switching + Shaft-Change Output Ratio
Taper Control | Supported
Hall Switch Pause | Supported
Limit Output Relay | Supported
Display | LCD + 40-Segment Digital Indication
Operation | Menu-Based Parameter Adjustment
Power Supply | AC 180–245V
Application | Automatic Web Tension Control

caractéristiques / spécifications techniques

• Product name: KDT-C-1000 Automatic Web Tension Controller
• Series: KDT Automatic Series
• Model type: C Type
• Range designation: 1000 N·m
• Control type: Fully automatic constant tension control
• Control adjustment: Proportional gain + integral time (menu adjustable)
• Feedback input: Two tension detectors
• Main output: 2 × 24V constant-current outputs (for magnetic powder clutches/brakes)
• Auxiliary analog output: 1 × 0–5V (configurable to 0–10V)
• Roll-change: Dual-station switching, shaft-change output ratio and preset output restoration
• Taper tension control: Supported (diameter-compensation)
• Hall switch pause function: Supported (pauses adjustment when motion stops)
• Communication: RS485; configurable address and baud rate; supports multi-controller synchronization
• Display: LCD with 40-segment digital tension indication
• Operation: Menu-based parameter setting for on-site commissioning
• Power supply: AC 180–245V
• Intended applications: winding, unwinding, slitting, printing, laminating, coating, packaging, film processing, paper converting, textile, nonwoven and battery material processing