ABB Web Tension Systems for Quality Tension Control

ABB Web Tension Systems for Quality Tension Control

Description 

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.

 Pressductor Radial load cells

ABB’s Pressductor® Radial load cells (PRT load cells) are sensitive and accurate yet rugged, reliable and compact. They can withstand high overloads and vibrations, and operate over a wide range of tensions: ideal for any web converting application such as coating, laminating, printing, slitting, winding/unwinding and many others.

The well-proven Pressductor load cells combined with the tension electronics, offer an easy-to-use/ user-friendly web tension measurement system with superior long term performance leading to higher productivity and product quality and higher profit for the web producer.

Increased process uptime

In a web process running continuously, every minute of production time is precious. Even so, no production line runs without downtime.

With Pressductor Radial load cells the risk of web breaks can be reduced to a minimum, thus leaving as much time as possible for real production.

Thanks to a strong and stable signal deriving from the PRT load cells, the upcoming web breaks are kept to an absolute minimum level.

Tighter product tolerances

The ability to produce web to tighter tolerances minimizes the costs associated with nonconforming web. It also increases the web producer’s accessible market to include products with tighter tolerance requirements.

Features and benefits：

Interactive menu

The tension electronics has a unique interactive menu which guides the commissioning step by step, eliminating the potential for making mistakes and significantly reducing startup time – a very helpful tool.

Built-in self diagnostics

The electronics continuously supervise a number of important parameters and provides error messages if something goes wrong.

Multi-language display

The multi-language display is a great feature that helps to eliminate mistakes, during start-up and/or operation of the tension system.

Load memory

The resetable load memory stores max. load values. A useful tool for maintenance.

Analog outputs

Individual scaling and filtering of all analog outputs. Fieldbus communication Versions PFEA 112 and PFEA 113 have Fieldbus communication via Profibus-DP as standard. In contradiction to many other tension systems the PFEA 112 and PFEA 113 provide a scaled and zeroed tension output ready for use in control or monitoring.

Filter function

All units come with a selectable filter function for removal of roll unbalance, machine vibrations and other disturbances.

Commissioning without calibration weights

All Pressductor load cells are standard calibrated to the same sensitivity before delivery from ABB factory. This means that the fastest and most accurate way to commission a tension system is to use a calculated value instead of using calibration weights.

Mounting

To provide flexibility of mounting, all three versions of the Tension Electronics are available in two mounting alternatives. For mounting on a standard DIN-rail the IP 20 and for wall mounting the IP 65.

Floor cubicle

Floor cubicle type MNS Select is available for housing of up to 24 pcs. of PFEA 111/112 or 12 pcs. of PFEA 113 when mounted on 19 inch plates. Exact numbers depend on the combination of different tension electronics and the number of optional units used.

Stock part list:

ABB PFSK 102 YM322001-EG
ABB PFSK110 DSPU120 57310001-HG
PFEA112-65 3BSE050091R65
PFEA113-65
PFEA112-20 3BSE050091R20
DIS880 3BSE074057R1
PFSK151 3BSE018876R1
PFSK152 3BSE018877R2