The SIWAREX DB is a digital junction box for connecting up to four analog strain gauge load cells to SIWAREX WP weighing electronics within the SIMATIC automation environment. Its stainless steel (V2A) enclosure and IP66 protection rating suit demanding industrial and washdown applications.

4-Channel Digital Load Cell Connectivity

Four independent load cell inputs with plug-in terminals accept strain gauge full bridges (1–4 mV/V). An RS485 interface transmits digitized measurements to SIWAREX WP231 or WP321 weighing modules, eliminating analog signal degradation over cable runs. Per-channel diagnostics detect wire breaks, impedance anomalies, and overload/underload conditions without a multimeter.

Key Parameters

Hazardous Area Compliance

Certified for Zone 2/22 hazardous areas under ATEX II 3 G Ex ec IIC T4 Gc and IECEx II 3 D Ex tc IIIC T120°C DC, enabling deployment in chemical and pharmaceutical environments.

The 7MH5001-0AD20 variant provides the same functionality in a die-cast aluminum housing for less demanding environments.