Key Features
- Digital input module: SIMATIC S7-300 digital input SM 321 with 32 DI.
- Input rating: 120 V AC input voltage, rated value (AC) 120 V; 47 … 63 Hz.
- Isolation: Potential separation between the channels and backplane bus with optocoupler; isolation tested with 2 500 V DC.
- Front connector: Required front connector: 40-pin.
- Dimensions: Width 40 mm, height 125 mm, depth 120 mm.
- Lifecycle: Product cancellation.
Technical Summary
| Product function | SIMATIC S7-300 digital input SM 321 |
|---|---|
| Number of digital inputs | 32 |
| Input voltage | 120 V AC |
| Input voltage frequency | 47 … 63 Hz |
| Input current from backplane bus 5 V DC, max. | 16 mA |
| Power loss, typ. | 4 W |
| Potential separation between the channels and backplane bus | Yes; Optocoupler |
| Isolation tested with | 2 500 V DC |
| Required front connector | 40-pin |
Applications
- Digital input signal acquisition: For reading 32 digital inputs in a SIMATIC S7-300 setup.
Frequently Asked Questions
What is Siemens 6ES7321-1EL00-0AA0?
It is a SIMATIC S7-300 digital input SM 321 module with isolated inputs.
How many digital inputs does 6ES7321-1EL00-0AA0 have?
It has 32 digital inputs.
What input voltage does 6ES7321-1EL00-0AA0 use?
The rated input voltage is 120 V AC; 47 … 63 Hz.
What front connector is required for 6ES7321-1EL00-0AA0?
A 40-pin front connector is required.
