About This System - ABB PFEA 113 User Manual

1.5 About this System

3BSE029382R0101 Rev C
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, e.g. 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.
Measuring roll
Bearing housing
Load cell
Figure 1-1. Typical Tension Measurement System with Tension Electronics PFEA113 (IP 20-version)
Tension Electronics PFEA113, User Manual
Web
Section 1.5 About this System
Tension Electronics PFEA113
Profibus
Instrument output
Control output
Power supply 24 V DC
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