Key Features
- SIMATIC S7-300 digital input module: Digital input SM 321 with isolated inputs and 8 DI.
- AC input values: Rated input values: 120 V; 120/230 V AC (47 … 63 Hz).
- Front connector and separation: Required front connector: 40-pin. Potential separation is provided between the channels and backplane bus; Optocoupler.
- Physical size: Width 40 mm, height 125 mm, depth 120 mm.
- Lifecycle status: Product cancellation.
Technical Summary
| Product function | Digital input SM 321 |
|---|---|
| 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 characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Input current from backplane bus 5 V DC, max. | 100 mA |
| Power loss, typ. | 4.9 W |
| Potential separation digital inputs between the channels | Yes |
| Potential separation digital inputs between the channels and backplane bus | Yes; Optocoupler |
| Connection method required front connector | 40-pin |
Applications
- AC digital signal acquisition: For reading 120 V/230 V AC digital inputs with 8 channels.
- 2-wire sensor connection: For connecting 2-wire sensor inputs with the module.
Frequently Asked Questions
What is Siemens 6ES7321-1FF10-0AA0?
It is a SIMATIC S7-300 digital input SM 321, isolated, with 8 DI.
What input values does 6ES7321-1FF10-0AA0 support?
The rated input values are 120 V; 120/230 V AC (47 … 63 Hz).
What connection and isolation details are provided for this module?
It uses a required 40-pin front connector, has potential separation between the channels and backplane bus, and isolation tested with 1 500 V AC.
What are the dimensions and weight of 6ES7321-1FF10-0AA0?
Width 40 mm, height 125 mm, depth 120 mm, weight approx. 240 g.
What is the lifecycle status of 6ES7321-1FF10-0AA0?
Product cancellation.
