Product Overview
Technical Summary
| Product designation | SIMATIC S7-300 digital input SM 321 |
|---|---|
| Digital inputs | 64 |
| Input voltage | 24 V DC rated |
| Signal 0 voltage | -30 to +5 V |
| Signal 1 voltage | 13 to 30V |
| Input current at signal 1 | 4.2 mA typ. |
| Input response | 3 ms |
| Input isolation | Optocoupler between inputs and backplane bus |
| Input grouping | Isolated in groups of 16 |
Key Features
- Product designation: SIMATIC S7-300 digital input SM 321; product cancellation.
- Digital inputs: 64 digital inputs with input characteristic curve according to IEC 61131, type 1.
- Input voltage: DC, rated value 24 V; signal "0": -30 to +5 V; signal "1": 13 to 30V.
- Input response: 3 ms; standard input rated value 4.2 ms, with 1.2 ms minimum and 4.8 ms maximum transition times.
- Isolation and groups: Inputs are isolated from the backplane bus by optocouplers and isolated in groups of 16; channel-to-channel potential separation: No.
- Required connection components: Cable 6ES7392-4Bxx0-0AA0 and terminal blocks 6ES7392-1xN00-0AA0 are required.
Frequently Asked Questions
What does Siemens 6ES7321-1BP00-0AA0 identify?
It identifies a SIMATIC S7-300 digital input SM 321 module with 64 inputs and 24 V DC input voltage.
Which connection components are required for 6ES7321-1BP00-0AA0?
Cable 6ES7392-4Bxx0-0AA0 and terminal blocks 6ES7392-1xN00-0AA0 are required.
How are the digital inputs isolated?
They are isolated from the backplane bus by optocouplers and isolated in groups of 16. Channel-to-channel potential separation is not provided.
