This user manual comprises two main parts.

1. Information about the Tension Electronics

– System and safety information (Chapter 1)

– Installation, commissioning, maintenance, operation and fault tracing (Chapters 2-6)

– Technical data (Appendix A)

2. Information about Designing the Load Cell Installation

– Vertical-force sensing load cell PFCL 301E (Appendix B)

– Horizontal-force sensing load cell PFTL 301E (Appendix C) – Radial Tensiometer PFRL 101 (Appendix D)

– Horizontal-force sensing load cell PFTL 101 (Appendix E)

– Vertical-force sensing load cell PFCL 201 (Appendix F)

– Horizontal-force sensing load cell PFTL 201 (Appendix G) Each appendix contains detailed information about one of the above load cell types when used in web tension systems with Tension Electronics PFEA113.

Your system for tension measurement consists of:

• Tension Electronics PFEA113

• Load cells of type PFCL 301E, PFTL 301E, PFRL 101, PFTL 101, PFCL 201 and PFTL 201

• Junction Box PFXC 141

This advanced tension electronics can supply up to four load cells and has six configurable analog outputs for control and/or monitoring of web tension. The output signals are also available on Profibus-DP. Another useful feature is the possibility to, via the digital input or Profibus, switch the gain for two different web paths (gain scheduling) and zero set. This unit also includes a self-diagnostic function and four configurable digital outputs for alarms and level detection. Status of self-diagnostic functions are also available on Profibus-DP. By combining up to three PFEA113 the system can handle segmented roll applications, for example winders, with up to 12 load cells. The high level of functionality and user friendliness make the PFEA113 one of the most complete tension electronics on the market. Covering a wide range of applications the Tension Electronics comes in three versions (PFEA 111 and PFEA 112 are described in a separate manual), with different levels of performance and functionality. All three versions have multi-language digital display and configuration keys. The configuration keys being used for setting different parameters and to check the status of the tension system. The 2 x 16-character display can present sum, difference or individual load cell signals. All three versions are available in both DIN-rail version (IP 20-version, unsealed) and enclosed IP 65-version (NEMA 4) for mounting in more severe environments. The equipment is intended for use in a wide range of manufacturing processes where web material of any kind, for example paper, plastic or textile, is transported in a machine. The only requirement is that the web is wrapped over a roll. The force on the roll is proportional to the web tension. The resulting force is transferred through the bearing housings into the load cells. The load cells create a signal that is proportional to the force acting in the measuring direction of the load cells. This signal is processed and amplified in the tension electronics and can be used as an input signal for process control, presentation on a display or for registration.