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SIWAREX WP231 Weighing Module

Brand: Siemens AG
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Does not ship to Washington, United States
SIWAREX WP231 is the first weighing module designed for SIMATIC S7-1200 integration via the Totally Integrated Automation (TIA) Portal engineering platform.

The ability to operate SIWAREX WP231 with or without SIMATIC PLCs offers additional flexibility and the Ethernet and RS485 interfaces with Modbus protocol enables integration into different control systems.

SIWAREX WP231 offers four digital inputs and outputs and one analog output. All inputs and outputs are controllable via the SIWAREX module or via SIMATIC S7-1200.
Features
  • Uniform structure and universal communication through the integration in S7-1200
  • Four digital inputs and outputs, one analog output, all inputs and outputs are controllable via the SIWAREX module or via SIMATIC S7-1200
  • Operation also possible without SIMATIC CPU
  • Easy commissioning via SIWATOOL or via HMI touch panel
  • Extensive diagnostic functions
  • Calibratable display
  • Flexible adjustment for different requirements
  • Theoretical adjustment without adjustment weights
  • Modules can be exchanged without readjusting the scale
  • Can be used for Ex-applications zone 2
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SIWAREX WP231 is the first weighing module designed for SIMATIC S7-1200 integration via the Totally Integrated Automation (TIA) Portal engineering platform.

The ability to operate SIWAREX WP231 with or without SIMATIC PLCs offers additional flexibility and the Ethernet and RS485 interfaces with Modbus protocol enables integration into different control systems.

SIWAREX WP231 offers four digital inputs and outputs and one analog output. All inputs and outputs are controllable via the SIWAREX module or via SIMATIC S7-1200.
Features
  • Uniform structure and universal communication through the integration in S7-1200
  • Four digital inputs and outputs, one analog output, all inputs and outputs are controllable via the SIWAREX module or via SIMATIC S7-1200
  • Operation also possible without SIMATIC CPU
  • Easy commissioning via SIWATOOL or via HMI touch panel
  • Extensive diagnostic functions
  • Calibratable display
  • Flexible adjustment for different requirements
  • Theoretical adjustment without adjustment weights
  • Modules can be exchanged without readjusting the scale
  • Can be used for Ex-applications zone 2
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Specifications

Brand

Integration in Automation Systems

  • SIMATIC S7-1200
  • Other Systems Via Modbus RTU or ModbusTCP/IP

Communication Interface

  • SIMATIC Bus
  • Ethernet
  • RS-485

Internal Resolution

  • Up to 4 Million Parts

Internal/External Updating Rate

  • 10 ms/100 Hz

Measuring Accuracy

  • EU Type Approval as Non-automatic Weighing Instrument, Trade Class III: 3,000 d ≥ 0.5 μV/e
  • Error Limit According to DIN 1319-1 of Full Scale Value at 20° C ± 10 K (68° F ± 10 K): 0.05 %

Load Cell

  • Full-bridge Strain Gauges in 4-Wire or 6-Wire System

Supply Voltage

  • 4.85 Vdc
  • Auxiliary: 24 Vdc

Permissible Range of the Measurement Signal

  • -21.3 to +21.3 mV With 4 mV/V Sensors)

Maximum Distance of Load Cells

  • 500 m (229.66 ft)

Certifications & Approvals

  • ATEX
  • UL
  • EAC
  • KCC
  • RCM
  • OIML R-76
  • NTEP Class III / III L
  • Design Approval 2009/23/EC (NAWI)
  • EMC

Environmental Protection

  • IP20

Operating Temperature

  • -10° to 55° C (14° to 131° F)
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Typical Applications

  • Non-automatic Weighing Instruments, Also Legal for Trade
  • Fill Level Monitoring of Silos and Bunkers 
  • Measuring of Crane and Cable Loads 
  • Load Measuring for Industrial Lifts and Rolling Mills 
  • Scales in Zone 2 Hazardous Areas 
  • Force Measuring, Hopper Scales, Platform Scales and Crane Scales
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