SIWAREX FTA (Flexible Technology, Automatic Weighing Instrument) is a versatile and flexible weighing module for industrial use. It can be used in both non-automatic and automatic weighing operation, for example the production of mixtures, and for filling, loading, monitoring and bag filling.
It has the corresponding scale approvals and is also suitable for legal-for-trade weighing systems.
The SIWAREX FTA function module is integrated in SIMATIC S7/PCS7, and uses the features of this modern automation system, such as integrated communication, diagnostics and configuration tools.
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SIWAREX FTA WEIGHING ELECTRONIC WITH VERIFICATION CAPABILITY.FOR AUTOMATIC AND NON AUTOMATIC . WEIGHING APPLICATIONS. USABLE FOR S7-300 AND ET200M. EC-CERTIFICATE OF CONFORMITY 3 X 6000D. . APPLICATIONS: . RAPID DOSING, FILLING/BAGGING AND LOADING. ATTENTION: FOR LEGAL FOR TRADE APPLICATIONS PLEASE FOLLOW THE LOCAL LAWS APPLYING IN THE COUNTRY OF LEGAL VERIFICATION ! – APPROPRIATE MMC-CARD: ONLY FOR LEGAL-FOR-TRADE APPLICATIONS R76, R51 AND R107: 7MH4900-2AY20
SIWAREX FTA is characterized by the following features:
Uniform design, and totally integrated communication in SIMATIC S7 and SIMATIC PCS 7
Uniform configuration with SIMATIC
Direct use in the SIMATIC automation system
Use in distributed plant concept through connection to PROFIBUS DP/PROFINET using ET 200M
Measurement of weight or force with high resolution of 16 million intervals
High accuracy 3 x 6 000d, legal-for-trade
Use with analog strain-gage load cells of types SIWAREX R and SIWAREX WL200
Alternative option of connecting individual load cells from the manufacturers METTLER TOLEDO, Wipotec and PESA
Legal-for-trade display with Windows-based panels, e.g. SIMATIC Comfort Panels
Stepless or stepped dosing control
Exact switching of dosing signals (< 1 ms)
Parameterizable inputs and outputs
Parameterizable for highly versatile applications
Flexible adaptation to different requirements with SIMATIC
Simple adjustment of scale using the SIWATOOL FTA program
Theoretical adjustment without adjustment weights
Replacement of module without renewed adjustment of scale
Recording of weighing sequence
Alibi memory with calibration capability
Can be used in Ex applications
The SIWAREX FTA weighing module is the optimum solution wherever high demands are placed on accuracy and speed.
Thanks to its outstanding measuring properties, weights can be measured with extreme accuracy in up to three ranges.
SIWAREX FTA can be used to design legal-for-trade dosing systems, such as filling plants, loading stations, bagging stations, rotopackers, mixers or test stations.
Typical fields of application include:
Filling of liquids
Bagging of solid matter (also big bag)
Proportioning as deduction weighing or fill weighing
Checking of individual quantities
Loading or receiving of materials
Check weigher (in combination with Wipotec load cells)
SIWAREX FTA is a function module of SIMATIC S7-300 which can be directly snapped onto the SIMATIC S7‑300 or ET 200M backplane bus. Thanks to the snap-on mounting rail system, very little work is required to install/cable the 80 mm wide weighing module.
The load cells, the RS 485 serial interface, the analog output and the digital inputs and outputs are connected by means of the 40‑pin standard front connector, the PC (RS 232) by means of a 9‑pin SUB-D connector and the power supply by means of a separate 2-pin connector.
Operation of SIWAREX FTA in SIMATIC enables the weighing system to be completely integrated into the automation system.
The main tasks of the SIWAREX FTA are the high-precision measurement of the current weight in up to three measuring ranges, and exact control of the weighing procedures.
The weighing module controls the weighing procedures fully automatically. However, integration in SIMATIC means that it is also possible to directly influence the weighing procedures using a PLC program. This means that the tasks can be sensibly divided: The very fast weighing functions are implemented in the SIWAREX FTA, the interlocking and logic functions in the SIMATIC CPU.
The SIWAREX FTA is easy to parameterize for the various automatic weighing functions.
The following weighing functions can be parameterized:
NSW (Non-Automatic Weighing Instrument) according to OIML R76
SWA (Automatic Gravimetric Filling Instrument) according to OIML R61
SWE (Automatic Catchweighing Instrument) according to OIML R51
SWT (Discontinuous Totalizing Automatic Weighing Instrument (Totalizing Hopper Weigher)) according to OIML R107
Monitoring and control of the load cell signals and statuses
During the weighing procedure, the SIWAREX FTA weighing module monitors and controls the load cell signals and statuses. The optimized exchange of data within SIMATIC permits direct evaluation of the load cell signals and statuses in the PLC program.
The SIWAREX FTA can easily be adapted to changes in the system technology thanks to the PLC’s influence on the weighing process.
The SIWAREX FTA is already factory-calibrated. This means that the theoretical adjustment of the scale is possible without adjustment weights, and that modules can be replaced without readjustment of the scale. When using “active bus modules”, replacement is also possible during operation.
Integration in SIMATIC
SIWAREX FTA is completely integrated into the SIMATIC S7 and SIMATIC PCS 7. Users can freely configure their automation solution – including the weighing application.
The right combination of SIMATIC components can produce optimum solutions for small, medium-size and large plants. The scales are operated and monitored using SIMATIC standard operator panels. Needless to say, these operator panels can also be simultaneously used for the operator control and monitoring of the plant.
Customized or sector-specific solutions can be developed extremely quickly using the configuration package and example applications for SIMATIC. The following Figure shows a typical configuration of a medium-size plant.
The ready-to-use function blocks for the automation system and the faceplates for the operator station are used for the configuration in SIMATIC PCS 7.
SIMATIC S7/PCS 7 configuration with SIWAREX FTA
SIWATOOL FTA commissioning software
SIWATOOL FTA is a special program for commissioning and servicing and runs with Windows operating systems.
The program enables the scales to be set without the need for prior knowledge of the automation system. During servicing, the technician can use a PC to analyze and test the procedures in the scale. Reading out the diagnostics buffer from the SIWAREX FTA is extremely helpful when analyzing events.
The following are just some of the tasks that can be carried out using SIWATOOL FTA:
Parameter assignment and calibration of the scale
Testing of scale properties
Saving and printing scale data
Recording and analysis of weighing sequence
Settings in SIWAREX FTA software
It is extremely helpful to analyze the diagnostics buffer, which can be saved together with the parameters from the module in a backup file.
The SIWAREX FTA weighing module includes a trace mode for optimization of weighing sequences. The recorded weight values and associated statuses can be displayed as traces using SIWATOOL FTA and MS Excel.
A further program function can be used to download a new firmware version onto the SIWAREX FTA on site. This means that firmware upgrades can be carried out on site as required anywhere in the world.
Reading out of weighing reports
The weighing reports are saved on an MMC (Micro Memory Card) inserted in the SIWAREX FTA for the duration specified by the Weights and Measures Act. If complaints are received concerning a particular weighing procedure, the associated data can be read out of the MMC using SIWATOOL.
SIWAREX FTA – simple configuration
Integration in SIMATIC results in freely-programmable, modular weighing systems which can be modified according to operational requirements.
The ready-to-use SIWAREX FTA software “Getting started” is also available free-of-charge and shows beginners how to integrate the module into a STEP 7 program and offers a basis for application programming. This allows you to connect the scale very easily to an operator panel connected directly to the SIMATIC CPU.
Configuring the legal trade display on the panel
The software SecureOCX is available in systems running WinCC flexible. It provides a function for configuration of the legal trade display directly in WinCC flexible. In the TIA Portal, the software SecureDisplay is used. This is installed directly on a Windows CE-based panel (for example, SIMATIC Comfort Touch series). There is a separate “Getting Started” for using this software in the TIA Portal. This solution requires a SIMATIC CPU with an Ethernet port. SIMATIC Basic and Key Panels cannot be used.
Scale faceplate in the SIWAREX FTA “Getting started” software
In addition, the STEP 7 program SIWAREX FTA Multiscale provides a professional basis for the implementation of batching or filling plants.
Use in automation systems
Directly or through ET 200M
Through ET 200M
Through ET 200M
PCS 7 (H)
Through ET 200M
Through backplane bus
For SIWATOOL or printer connection
For remote display or digital load cell
Using SIMATIC S7
Using SIWATOOL FTA software (RS 232)
EU type approval as non-automatic weighing machine, trade class III