Key Features
- Digital input module: SIMATIC S7-300 digital input SM 321 with 32 DI.
- Input rating: 120 V AC, 47 … 63 Hz.
- Isolation: Potential separation between the channels and backplane bus with optocoupler; isolation tested with 2 500 V DC.
- Connection: Required front connector: 40-pin.
- Installation data: Width 40 mm, height 125 mm, depth 120 mm.
Applications
- 32-channel AC input acquisition: For connecting 32 AC digital input signals to a SIMATIC S7-300 system.
- 2-wire sensor connection: For connecting 2-wire sensors to the digital inputs.
Technical Summary
| Product function | Digital input SM 321 |
|---|---|
| Number of digital inputs | 32 |
| Input voltage | 120 V AC; 47 … 63 Hz |
| Input voltage for signal "0" | 0 to 20V |
| Input voltage for signal "1" | 74 to 132V |
| Input current for signal "1", typ. | 21 mA |
| Power loss, typ. | 4 W |
| Connection method required front connector | 40-pin |
Frequently Asked Questions
What is Siemens 6ES7321-1EL00-0AA0?
It is a SIMATIC S7-300 digital input SM 321 with 32 DI.
What input voltage does 6ES7321-1EL00-0AA0 use?
The module uses 120 V AC, 47 … 63 Hz input voltage.
How many digital inputs are on 6ES7321-1EL00-0AA0?
It has 32 digital inputs.
What front connector is required for 6ES7321-1EL00-0AA0?
A 40-pin front connector is required.
What are the module dimensions of 6ES7321-1EL00-0AA0?
Width 40 mm, height 125 mm, and depth 120 mm.
