Key Features
- SIMATIC S7-300 digital input module: Digital input SM 321 for the SIMATIC S7-300 range.
- 16 isolated digital inputs: Provides 16 DI with potential separation between the channels and backplane bus via optocoupler.
- 24 V DC sourcing input: Uses DC input voltage with rated value 24 V.
- 1x 20-pole front connector: Requires a 20-pin front connector.
- Compact module dimensions: Width 40 mm, height 125 mm, depth 120 mm.
Technical Summary
| Product type | SIMATIC S7-300, digital input SM 321 |
|---|---|
| Number of digital inputs | 16 |
| Input 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 from backplane bus 5 V DC, max. | 10 mA |
| Power loss, typ. | 3.5 W |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
Applications
- 24 V DC digital signal acquisition: Connects 24 V DC input signals to 16 digital inputs for control signal reading.
Frequently Asked Questions
What is Siemens 6ES7321-1BH50-0AA0?
It is a SIMATIC S7-300 digital input SM 321 spare part with 16 DI.
How many digital inputs does 6ES7321-1BH50-0AA0 have?
It has 16 digital inputs.
What input voltage does 6ES7321-1BH50-0AA0 use?
The input voltage is DC with a rated value of 24 V.
What connection is required for 6ES7321-1BH50-0AA0?
It requires a 20-pin front connector.
