Siemens 6ES7321-1BH02-0AA0 Digital Input Module
The Siemens 6ES7321-1BH02-0AA0 Digital Input Module serves as a critical interface for collecting sensor data in industrial automation systems. Designed for S7-300 controller integration, this module handles 24V DC signals from devices like proximity switches, pushbuttons, and limit switches. We’ve seen it deployed extensively in automotive assembly lines and chemical processing plants where precise input monitoring directly impacts operational safety and throughput.
Technical Specifications
| Brand | Siemens |
| Model | 6ES7321-1BH02-0AA0 |
| Channels | 16 Digital Inputs |
| Voltage | 24V DC |
| Mounting | DIN Rail |
| Operating Temp | -20°C to +60°C |
| Weight | 220g |
| Certifications | CE, UL, cUL |
We commonly see this module paired with S7-300 PLCs in applications requiring high-speed input processing. A recent customer in the food & beverage sector used it alongside Siemens 6ES7332-5HD01-0AB0 analog output modules to create a synchronized packaging line control system. Its channel-to-channel isolation proved crucial when integrating mixed-voltage sensors in their wash-down environment.
For system designers, the 1.5mm screw terminals and color-coded channel indicators simplify troubleshooting. The module’s diagnostic capabilities – like individual channel status LEDs and controller communication feedback – reduce mean time to repair. We’ve helped clients implement this module in hazardous area applications by pairing it with Siemens 3RK1300-2AB00 safety relays.
Our Value Proposition
With 19 years of industrial automation experience, we maintain 16 global warehouses stocking Siemens modules like this one. Our clients benefit from:
- 48-hour replacement guarantee for failed units
- Free firmware updates for legacy modules
- Technical support from Siemens-certified engineers
While we can’t publish list prices here (Siemens requires direct inquiry), our warehouse-direct model typically offers 15-25% savings versus distributor pricing. One-year warranty included with full traceability documentation.
Contact:
📧 abbdcs36@gmail.com
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*All units tested per Siemens factory specifications before shipment
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