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ABB PFCL201CE‑50KN 3BSX802939‑108

The ABB PFCL201CE-50KN (3BSX802939-108) is a high-precision Pressductor® pillow block load cell / tension measurement sensor designed for industrial web tension control applications. It belongs to ABB’s PFCL201 series and is mainly used for measuring roll bearing forces in processes where accurate strip, web, or material tension monitoring is required.

Unlike conventional strain-gauge load cells, the PFCL201CE uses ABB’s patented Pressductor magnetoelastic measurement technology, providing excellent stability, low signal noise, and reliable operation in harsh industrial environments.

Product Parameters

Core Function

The primary function of the ABB PFCL201CE-50KN is to convert mechanical force generated by strip or web tension into an electrical measurement signal for a tension control system.

During operation:

• The load cell is installed beneath roll bearings.
• Material tension creates a reaction force on the roll.
• The sensor detects the applied force through changes in magnetic permeability.
• The control unit processes the sensor signal into a proportional measurement value.
• The automation system adjusts tension control parameters in real time.

Typical system configuration includes:

• Two PFCL201 series load cells
• Junction box
• ABB tension controller
• Control system / PLC interface 

Design Features

1. Pressductor® Magnetoelastic Technology

ABB’s Pressductor technology measures force through magnetic field changes inside a specially machined steel sensor body. This design provides:

• High measurement stability
• Excellent resistance to electromagnetic interference
• Low mechanical wear
• Long service life 

2. Integrated Pillow Block Structure

The PFCL201CE is designed for direct integration with roll bearing assemblies:

• Compact mechanical structure
• High rigidity
• Easy replacement of existing tension sensors
• Suitable for continuous production lines 

3. Fixed Cable Configuration

Compared with PFCL201C versions using detachable connectors, the PFCL201CE variant uses a fixed connection cable with protective covering, improving reliability in industrial environments. 

4. High Overload Capability

The robust stainless-steel construction allows the sensor to withstand vibration, mechanical shock, and continuous production loads.

Hardware Composition

The ABB PFCL201CE-50KN consists of:

• Precision-machined stainless steel sensor body

  • Provides mechanical strength and force transmission.

• Pressductor sensing element

  • Contains primary and secondary windings used for magnetoelastic measurement.

• Integrated temperature compensation components

  • Improves measurement stability under changing operating temperatures.

• Fixed shielded connection cable

  • Transfers measurement signals to the control electronics.

• Mounting interface

  • Designed for pillow block bearing installation. 

Application Scenarios

The ABB PFCL201CE-50KN is widely used in continuous process industries, including:

Metal Processing

• Steel strip production lines
• Rolling mills
• Strip tension monitoring
• Coil processing equipment

Paper and Printing Industry

• Paper web tension control
• Printing machine tension systems
• Rewinding and unwinding equipment

Textile Industry

• Fiber and fabric tension regulation
• High-speed winding systems

Industrial Automation

• Tension feedback systems
• Process control equipment
• Retrofit projects replacing aging load cells 

Maintenance Considerations

To ensure long-term operation:

• Check cable insulation and protective sleeve condition regularly.
• Avoid mechanical impact beyond the rated load range.
• Ensure correct alignment between roll bearing and load cell.
• Keep mounting surfaces clean and free from debris.
• Verify calibration periodically in precision applications.
• Protect connections from moisture and chemical contamination.

Incorrect installation or side loading may reduce measurement accuracy and shorten sensor life.

Overall Evaluation

The ABB PFCL201CE-50KN (3BSX802939-108) is a professional industrial tension measurement component designed for demanding continuous-process applications. Its Pressductor® technology provides higher durability and signal stability compared with traditional load cell designs.

With a 50 kN measurement capacity, robust mechanical construction, and compatibility with ABB tension control systems, it is especially suitable for steel, paper, textile, and other industries requiring accurate and reliable web tension control.