Key Features
- Digital input module: SIMATIC S7-300 digital input SM 321 for 8 DI.
- AC input rating: 120 V/230 V AC.
- Isolated input channels: Potential separation digital inputs between the channels and backplane bus, with optocoupler.
- 40-pin front connector: Connection method: required front connector, 40-pin.
- Product lifecycle: Product cancellation.
Applications
- AC digital input acquisition: For reading 120 V/230 V AC input signals through 8 digital inputs.
Technical Summary
| Product function | Digital input SM 321 |
|---|---|
| Number of digital inputs | 8 |
| Input voltage, rated value (AC) | 120 V; 120/230 V AC (47 … 63 Hz) |
| Load voltage L1, rated value (AC) | 230 V; 120/230 V AC; all load voltages must have the same phase. |
| Input voltage for signal "0" | 0 to 40V |
| Input voltage for signal "1" | 79 to 264V |
| Input current for signal "1", typ. | 7.5 mA; (120 V); 17.3 mA (230 V) |
| Input current from backplane bus 5 V DC, max. | 100 mA |
| Power loss, typ. | 4.9 W |
| Connection method | required front connector, 40-pin |
| Isolation tested with | 1 500 V AC |
Frequently Asked Questions
What is Siemens 6ES7321-1FF10-0AA0 used for?
It is a SIMATIC S7-300 digital input SM 321 for 8 DI.
How many digital inputs does 6ES7321-1FF10-0AA0 have?
It has 8 digital inputs.
What input voltage does 6ES7321-1FF10-0AA0 support?
The rated input voltage is 120 V; 120/230 V AC (47 … 63 Hz).
What connector is required for 6ES7321-1FF10-0AA0?
It requires a 40-pin front connector.
