SIWAREX WP251 Weighing Module
Brand: Siemens AG
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SIWAREX WP251 Weighing Module
Brand: Siemens AGSIWAREX WP251 controls dosing and batching tasks completely independently while fulfilling the typical requirements of these processes, such as speed and accuracy.
As part of the SIMATIC S7-1200 basic controller family, the WP251 can be integrated seamlessly into the TIA Portal.
The SIWAREX WP251 weighing module can be used with SIMATIC S7-1200 or without a SIMATIC CPU in stand-alone mode.
Operation and commissioning of the scale are quick and easy with the free software example application "Ready-for-use SIWAREX WP251”.
The commissioning, calibration and operation of the scale can be done completely via the CPU or Touchpanel – the SIWAREX WP251 function block doesn't require any additional programming! In combination with a SIMATIC S7-1200 basic controller, all customer and application specific requirements can be easily met.
In the stand-alone mode all parameters and functions can be accessed and edited via the on board Modbus RTU or Modbus TCP/IP interface.
A PC or any Modbus-compatible device can be directly connected and used for operation.
In addition, the SIWAREX WP251 offers a trace function. All traced process values and status information of the scale can be illustrated and analyzed with SIWATOOL V7 and, if required, edited in spreadsheets.
Features- Uniform design technology and consistent communication in SIMATIC S7-1200
- Uniform configuration with TIA Portal
- Legal-for-trade according to OIML R-76, R-51, R-61 and R-107
- Internal alibi memory for up to 550,000 entries
- Operation without SIMATIC CPU possible
- Ethernet port ex works (Modbus TCP/IP / SIWATOOL)
- RS 485 interface ex works (Modbus RTU / remote display)
- Four digital inputs and outputs, one analog output ex works
- Measurement of weight and force with a high resolution of up to ± 4 million parts and an accuracy of 0.05%
- Simple adjustment of scale using the SIWATOOL V7 program via the Ethernet interface
- Recovery point for simple restoration of all parameters
- Automatic calibration is possible without the need for calibration weights
- Supports replacement of module without recalibration of scales
- Direct use in hazardous area zone 2
Specifications
Brand
Certifications & Approvals
- ATEX Zone 2
- UL
- KCC
- EAC
- RCM
- EU Type-Examination Certificate
Weighing Modes
- Non-automatic Weighing Instrument (NAWI) (Filling + Removal) (Legal-For-Trade in Accordance with OIML R-76)
- Automatic Catchweighing Instrument (ACI) (Filling + Removal) (Legal-For-Trade in Accordance with OIML R-51)
- Automatic Gravimetric Filling Instruments (AGFI) (Legal-For-Trade in Accordance with OIML R-61)
- Weighing Instruments (DTAWI) (Legal-For-Trade in Accordance with OIML R-107)
Integration in Automation Systems
- S7-1200
- Operator Panel and/or Automation Systems From Other Vendors
Accuracy
- Error Limit According to DIN 1319-1 of Full Scale Value at 20° C ± 10 K (68° F ± 10 K)
Internal Resolution
- Up to ± 4 million Parts
Number of Measurements/Second
- 100 or 120 (Selectable)
Permissible Range of Measurement Signal
- -21.3 to 21.3 mV
Maximum Distance of Load Cells
- 500 m (229.66 ft)
Auxiliary Power Supply
- 24 Vdc
Environmental Protection
- IP20
Operating Temperature
- -10° to 55° C (14° to 131° F)
- Automatic Catchweighing Instruments (ACI) - Legal-for-Trade in Accordance with OIML R-51
- Automatic Gravimetric Filling Instruments (AGFI) - Legal-for-Trade in Accordance with OIML R-61
- Non-automatic Weighing Instruments (NAWI) - Legal-for-Trade in Accordance with OIML R-76
- Discontinuous Totalizing Automatic Weighing Instruments (DTAWI) - Legal-for-Trade in Accordance with OIML R-107
