Product Overview
Technical Summary
| Product designation | SIMATIC S7-300 digital input SM 321, isolated |
|---|---|
| Digital inputs | 16 |
| Input voltage | 24 V DC rated value |
| Signal "0" input range | -30 to +5 V |
| Signal "1" input range | 13 to 30V |
| Front connector | 20-pin |
| Input delay | 0.05 ms |
| Load voltage L+ | 24 V DC rated value |
| Load voltage permissible range | 20.4 V to 28.8 V |
| Product lifecycle | Product cancellation |
Key Features
- Product designation: SIMATIC S7-300 digital input SM 321, isolated; product cancellation.
- Digital inputs: 16 digital inputs with an IEC 61131 type 1 input characteristic curve.
- Input voltage: DC input voltage; rated value 24 V, with signal "0" from -30 to +5 V and signal "1" from 13 to 30V.
- Connection: Required 20-pin front connector; 1x 20-pole.
- Input timing: Input delay is 0.05 ms; standard-input transition delay is 25 μs min. to 75 μs max. for both "0" to "1" and "1" to "0".
- Mechanical dimensions: Width: 40 mm; height: 125 mm; depth: 120 mm; weight, approx.: 200 g.
Frequently Asked Questions
What product does Siemens order number 6ES7321-1BH10-0AA0 identify?
It identifies a SIMATIC S7-300 SM 321 isolated digital input module with 16 digital inputs, 24 V DC, and a 20-pin front connector.
Which specifications distinguish this digital input module variant?
The distinguishing supplied specifications include 16 digital inputs, 24 V DC rated input voltage, 0.05 ms input delay, and a 20-pin front connector.
What connector should be checked for this code?
The required front connector is 20-pin, and the configuration is described as 1x 20-pole.
What details are needed for a quotation?
Confirm the complete order number, required quantity, and destination.
