A versatile and flexible weigh beam for the seamless integration of a static scale into the SIMATIC automation environment.
SIWAREX WP321 is suitable for tasks typical of non-automatic scales: Level measurement in silos and bunkers, and platform scales can be seamlessly integrated in the automation environment.
The internal update rate of 100, 120 or 600Hz allows a fast and accurate force measurement, too. Scales can also be installed in hazardous areas (with Ex-interface SIWAREX IS). The configuration package and the “ready for use” sample application offers very fast development and implementation of customer and industry specific solutions.
SIWAREX WP321 can be integrated and used in SIMATIC Step7 V5 as well as in TIA Portal.
Key Features
- Uniform structure and universal communication through the integration in I/O SIMATIC ET 200
- Parameterisation of the scale via operator panel, CPU or PC
- Flexible configuration possibilities in SIMATIC TIA Portal resp. SIMATIC Step7 V5
- Measuring of weight and force with a resolution of up to +/- 2 million parts
- 600 Hz measuring rate (high speed)
- 100/120 Hz measuring rate (efficient 50/60Hz interference frequency suppression)
- Scale internal control of freely definable limit values
- Easy commissioning via software SIWATOOL without SIMATIC knowledge
- Automatic adjustment without adjustment weights possible
- Replacement of module without a new adjustment of scale
- Direct use in ATEX zone 2 possible
- Various status- und diagnostic information
- “Ready for use“ sample application
The weighing electronics are integrated within the SIMATIC ET 200SP system series and use all the features of a modern automation system, such as integrated communication, operator control and monitoring, diagnostics units and the project planning tools in the TIA portal, SIMATIC Step 7, WinCC flexible and PCS 7.
In conjunction with the digital SIWAREX DB junction box, up to four connected load cells can be diagnosed separately. This enables the weigh beam module to detect the failure of individual load cells and, in the event of an error, to provide relevant load cell data such as order number and location designation directly in the CPU or at the HMI. This increases the operational reliability of the scale, reduces downtimes, makes commissioning easier and simplifies servicing.
All messages and process values of the individual load cell channels are of course available in the SIMATIC controller.
Technical Specifications
SIWAREX WP321 | Integration in automation systems | SIMATIC S7-300/400 SIMATIC S7-1200 SIMATIC S7-1500 | |
|---|---|---|---|
Communication interfaces | SIMATIC ET200 SP Bus, RS485 (SIWATOOL)1
| ||
Internal resolution | Up to +/- 2 million parts | ||
Design
SIWAREX WP321 is a technology module (TM) of the SIMATIC ET 200SP series and is thus linked to the controller in a distributed manner by means of an ET 200SP interface module (PROFIBUS/PROFINET).
The following BaseUnits (Type A0) can be used for integration:
For opening a new potential group:
- BU15P-16+A10+2D (6ES7193-6BP20-0DA0)
- BU15P-16+A0+2D (6ES7193-6BP00-0DA0)
For continuing the potential group:
- BU15P-16+A10+2B (6ES7193-6BP20-0BA0)
- BU15P-16+A0+2B (6ES7193-6BP00-0BA0)
The load cells or force sensors are connected to the terminals of the BaseUnits. This means that modules can be replaced quickly, easily and without any wiring work.
Application
SIWAREX WP321 is the optimum solution wherever analog load cells are used for measuring tasks.
The SIWAREX WP321 is suitable for the following applications:
- Non-automatic weighing instrument (NAWI), e.g. platform and hopper scales
- Fill-level monitoring of silos and bins
- Measuring of crane and cable loads
- Force measurements
- Monitoring of belt tensions
- Setup of scales in hazardous areas
The SIWAREX WP321 ST Advantage
The electronic weighing system described here is characterized by decisive advantages:
- Uniform design technology and consistent communication in SIMATIC ET 200SP
- Compact design with only 15 mm module width
- Parameterization of the scales via the control panel, CPU or PC
- Flexible configuration options in SIMATIC TIA Portal, SIMATIC STEP 7 and PCS 7
- Measuring of weights and forces with a resolution of up to +/- 2 million parts
- 100/120/600 Hz measurement rate
- Internal scale monitoring of freely definable limit values
- Easy commissioning using the SIWATOOL software
- Automatic calibration is possible without the need for calibration weights
- Modules can be replaced without recalibrating the scale
- Direct use in ATEX Zone 2 possible
- Wide range of status and diagnostic information
- “Ready-for-use” sample program
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