Product information
Overview
Key Features
- Digital input capacity: 32 isolated digital inputs.
- AC input: Type of input voltage: AC; rated value: 120 V; 47 … 63 Hz.
- Signal thresholds: Signal "0": 0 to 20V; signal "1": 74 to 132V.
- Front connection: Required front connector: 40-pin.
- Electrical separation: Separation between the digital inputs and backplane bus: Yes; Optocoupler. Separation between channels: No; in groups of 8.
- Channel status indication: Status indicator for the digital input: green, per channel.
Technical Summary
| Product type | SIMATIC S7-300 SM 321 isolated digital input module |
|---|---|
| Digital inputs | 32 |
| Input voltage type | AC |
| Rated input voltage | 120 V; 47 … 63 Hz |
| Input signal "0" | 0 to 20V |
| Input signal "1" | 74 to 132V |
| Required front connector | 40-pin |
| Backplane bus input current | 16 mA max. from backplane bus 5 V DC |
| Lifecycle | Product cancellation |
Frequently Asked Questions
What is the exact Siemens model and module type?
It is Siemens 6ES7321-1EL00-0AA0, SIMATIC S7-300 SM 321 isolated digital input module.
How many digital inputs does the module have?
It has 32 digital inputs. Separation between channels is not provided; the inputs are arranged in groups of 8.
What connector is required?
A required 40-pin front connector is used.
What should be included in a quotation request?
Send the required quantity, destination, and project-list context for quotation review.
