ABB MEASUREMENT & ANALYTICS Web Tension Systems with Tension Electronics PFEA113

ABB MEASUREMENT & ANALYTICS Web Tension Systems with Tension Electronics PFEA113

Product overview

1. System composition and functions

PFEA113 is the core control module of ABB's Web tension system, equipped with various types of load sensors such as PFCL 301E and PFTL 301E, which can accurately measure and control the tension of materials such as paper, plastic, and textiles during the production process. The system supports single roll, double roll, and segmented roll applications, and can connect up to 12 load sensors (through multiple PFEA113 combinations). It has 6 configurable analog outputs and 4 digital outputs, suitable for tension closed-loop control and monitoring in industrial automation production lines.

2. Technical features

Measurement technology: Presductor based on ABB patent ®  Technology converts mechanical force into electrical signals through the principle of electromagnetic induction, generating measurement signals without the need for mechanical deformation. It has high stiffness, anti vibration, and anti overload capabilities.

Accuracy and stability: 24 bit high-precision data acquisition, measurement accuracy of 0.05%, sampling rate of 10Hz, working temperature range of -20 ℃ to 60 ℃, with 2500Vrms electrical isolation and multiple protection functions (overload, over temperature, short circuit).

Communication capability: Supports various industrial communication protocols such as Profibus DP and Modbus, and can seamlessly integrate with PLC, DCS, and other systems to achieve remote monitoring and control.

Core technical principles

1. Pressductor ®  Technical principles

When the load sensor is subjected to mechanical force, the magnetic permeability of the steel core changes, causing a change in the magnetic coupling between the two sets of vertical coils wound on the steel core, thereby inducing an AC voltage signal proportional to the applied force in the output coil. The signal is processed by PFEA113 and converted into a standard output signal proportional to tension (such as 0-10V or 4-20mA).

2. Tension calculation model

The relationship between tension T and the measured force FR of the load sensor is T=Wrap Gain × FR, where Wrap Gain is the winding gain, which depends on installation parameters such as the winding angle and roller diameter of the material on the roller. The system supports setting Wrap Gain through hanging weight method or calculation method to ensure measurement accuracy.

Installation and Debugging

1. Installation requirements

Environmental conditions: Installed in a dry, ventilated, and non strong electromagnetic interference environment, IP 65 version can be used in harsh environments, and IP 20 version is suitable for indoor control cabinet installation.

Mechanical installation: The load sensor needs to be installed horizontally or obliquely to ensure that the direction of force is consistent with the measurement direction. The flatness error of the installation plane should not exceed 0.1mm. Use a torque wrench to tighten the adapter plate with the specified torque (such as 24N · m for M8 screws).

Electrical connection: The load sensor cable needs to use shielded twisted pair cables, maintaining a distance of at least 0.3m from the power cable. The shielding layer should be grounded at one end, and the maximum cable resistance should not exceed 10 Ω.

2. Debugging process

Quick settings (applicable to single/double rollers): Language, unit, and width settings can be completed through panel buttons. After zero calibration, the hanging weight method (applying known weight) or directly inputting the calculated Wrap Gain value can be selected to complete basic functional configuration.

Complete setup: including system definition (roller type, gain scheduling), object type (standard roller/single-sided measurement/segmented roller), nominal load, analog output mapping (such as AO1 corresponding tension sum), digital output threshold (high and low limit alarm), and other detailed parameter configurations.

Functional verification: Check the polarity of the load sensor signal (it should display positive when manually applying force), and ensure normal signal transmission through analog input/output testing.

Operation and maintenance

1. Operation interface

Display and buttons: 2 × 16 character backlit LCD display, supports multiple languages (English, German, French, etc.), navigates the menu through the directional keys and confirm keys, and can view the tension, difference, and alarm information of each roller in real time.

Menu structure: Includes operator menu (real-time data), configuration menu (parameter settings), and service menu (fault diagnosis, reset), supporting quick access to commonly used functions.

2. Maintenance points

Preventive maintenance: Regularly check the torque of the fixing screws and cable connections of the load sensor for looseness, clean the dust on the housing, and use compressed air to clean the debris in the sensor gap.

Fault handling: The system's self diagnostic function can detect flash memory errors, power supply failures, abnormal load sensor excitation, etc. Fault information can be obtained through panel error codes or Profibus communication. Common faults such as "Flash Memory Error" require module replacement, and "Load Cell Excitation Error" require cable and sensor inspection.