Product Overview
Technical Summary
| Product designation | SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC |
|---|---|
| Digital inputs | 32 |
| Rated input voltage | 24 V DC |
| Input characteristic | Type 1 according to IEC 61131 |
| Simultaneously controllable inputs | 32 |
| Signal "0" input range | -30 V DC to +5 V DC |
| Signal "1" input range | 13 V DC to 30 V DC |
| Diagnostics function | No |
| Product lifecycle | Announcement of product phase-out |
Key Features
- Product designation: SIMATIC S7-400, digital input SM 421, isolated 32 DI; 24 V DC.
- Digital inputs: 32 digital inputs; 32 inputs can be controlled simultaneously.
- Input voltage: Rated input voltage: 24 V DC. Signal "0": -30 V DC to +5 V DC; signal "1": 13 V DC to 30 V DC.
- Input characteristic: Type 1 according to IEC 61131.
- Cable length: Shielded cable: max. 1 000 m; unshielded cable: max. 600 m.
- Product lifecycle: Announcement of product phase-out.
Frequently Asked Questions
What does Siemens 6ES7421-1BL01-0AA0 identify?
It identifies a SIMATIC S7-400 digital input SM 421 module with 32 isolated digital inputs and 24 V DC.
Which specifications distinguish this 6ES7421-1BL01-0AA0 variant?
The listed variant has 32 digital inputs, Type 1 input characteristic according to IEC 61131, and a rated input voltage of 24 V DC.
What input ranges should be checked for 6ES7421-1BL01-0AA0?
Signal "0" is -30 V DC to +5 V DC, and signal "1" is 13 V DC to 30 V DC.
What should be provided for a quotation?
Provide the required quantity and destination together with the complete 6ES7421-1BL01-0AA0 order number.
