Product Overview
Technical Summary
| Product designation | SIMATIC S7-300 digital input SM 321 |
|---|---|
| Digital inputs | 16 isolated inputs |
| Input voltage | 24 V DC rated value |
| Input type | Sourcing input |
| Front connector | 20-pin |
| Potential separation | Between digital inputs and backplane bus: Yes; Optocoupler |
| Product lifecycle | Product cancellation |
Key Features
- Product designation: SIMATIC S7-300 digital input SM 321 module; product cancellation.
- Digital inputs: 16 isolated digital inputs with 24 V DC rated input voltage and sourcing input.
- Input voltage: Input voltage type: DC; rated value: 24 V; signal "0": -5 to +30V; signal "1": -13 to -30V.
- Connection: Required front connector: 20-pin; supplied configuration: 1x 20-pole.
- Potential separation: Digital inputs are not separated between channels; separation from the backplane bus is provided by an optocoupler.
- Dimensions and weight: 40 mm width, 125 mm height, 120 mm depth, and approximately 200 g weight.
Frequently Asked Questions
What does Siemens 6ES7321-1BH50-0AA0 identify?
It identifies a SIMATIC S7-300 SM 321 digital input module with 16 isolated 24 V DC sourcing inputs.
Which specifications distinguish this MLFB variant?
Key distinguishing specifications are 16 digital inputs, 24 V DC rated input voltage, sourcing input, and a required 20-pin front connector.
What connector is required for 6ES7321-1BH50-0AA0?
The required front connector is 20-pin.
What should be checked when requesting a quotation?
Check the complete code 6ES7321-1BH50-0AA0 and provide the required quantity and destination.
