Junction Box SIWAREX DB

Digital junction box for enhanced diagnosis and control possibilities

The digital junction box SIWAREX DB guarantees by continuous integration, that data can be gathered and analyzed more comprehensive than never before. This data can be used optimally for targeted monitoring of weighing processes as well as for enhanced diagnosis and the simplification of services. Error reports for each connected load cell will be shown centrally at the SIMATIC controller or the HMI panel. Even the load of every individual load cell appears already during commissioning. SIWAREX DB offers the possibility, to connect a scale with up to four load cells and due to the digitalization of the well-established strain gauge technology it offers complete flexibility in the plant design. Using the SIWAREX WP231 as weighing module the seamless connection to a SIMATIC S7 CPU for SIMATIC S7-1200 is possible. Whereas for the distributed I/O system SIMATIC ET 200SP, the use of a SIWAREX WP321 as weighing module is the first choice. Due to the rugged housing with degree of protection IP66, the SIWAREX DB also suits for weighing applications in demanding industry environments

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  • Additional diagnosis possibilities due to analysis of single load cells 
  • Integration in SIMATIC via connection to SIWAREX weighing module
  • Seamless communication between command and field level, supports tracking of order number and location code
  • Easy exchange against analog junction box
  • Use in harsh environments due to IP66 
  • Simplification of service: no multimeter necessary anymore 
  • fast initial diagnosis via LEDs

Benefits of the single channel monitoring:

  • wire break alarm: load cell is not correctly connected anymore
  • Impedance measurement: change of the load cell resistance 
  • Control of under-/overload 
  • Current load of each load cell: midpoint calculation possible


Connection to automation systems:
IP degree of protection
IP66, DIN 60529
Material housing:  
Die-cast aluminum, DIN EN 1706
EN AC-AlSi 12 (Fe)
or stainless steel, 1.4301
Ambient temperature:
-20 … +80°C

Aluminum version: 100 x 160 x 81mm

Stainless steel: 110 x 204 x 73 mm

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