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SIWAREX WP251 Weighing Module

Brand: Siemens AG
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Does not ship to Washington, United States
SIWAREX 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
show more
SIWAREX 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
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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)
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Applications

  • 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
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