Key Features
- SIMATIC S7-300 digital input module: Digital input SM 321 for the SIMATIC S7-300 range.
- 16 digital inputs: Provides 16 DI for digital signal acquisition.
- 24 V DC input rating: Designed for DC input voltage with a rated value of 24 V.
- 20-pin front connector: Requires a 20-pin front connector.
- Isolated channel design: Digital inputs are isolated, with separation between the channels and backplane bus via optocoupler.
Technical Summary
| Product designation | SIMATIC S7-300, digital input SM 321, isolated, 16 DI, 24 V DC, 1x 20-pole |
|---|---|
| Number of digital inputs | 16 |
| Input voltage type | DC |
| Input voltage rated value | 24 V |
| Load voltage L+ rated value (DC) | 24 V |
| Load voltage L+ permissible range, lower limit (DC) | 20.4 V |
| Load voltage L+ permissible range, upper limit (DC) | 28.8 V |
| Input current for signal "1", typ. | 7 mA |
| Required front connector | 20-pin |
| Potential separation digital inputs and backplane bus | Yes; Optocoupler |
| Isolation tested with | 500 V DC |
Applications
- 24 V DC digital signal acquisition: Used for capturing 24 V DC input signals on 16 channels.
- 2-wire sensor connection: Used for connecting 2-wire sensor signals to the digital input module.
Frequently Asked Questions
What is Siemens 6ES7321-1BH02-0AA0?
It is a SIMATIC S7-300 digital input SM 321 with isolated 16 DI, 24 V DC, and 1x 20-pole connection.
How many digital inputs does 6ES7321-1BH02-0AA0 provide?
It provides 16 digital inputs.
What front connector is required for this Siemens input module?
A 20-pin front connector is required.
What is the input voltage rating for 6ES7321-1BH02-0AA0?
The input voltage type is DC and the rated value is 24 V.
What is the product lifecycle status of 6ES7321-1BH02-0AA0?
Product cancellation.
