Product Overview
Technical Summary
| Product | SIMATIC S7-300 SM 321 digital input module |
|---|---|
| Configuration | 8 isolated digital AC inputs |
| Input voltage | 230 V; 120/230 V AC (47 … 63 Hz) |
| Front connector | 20-pin |
| Backplane bus current | 29 mA max. at 5 V DC |
| Channel-to-backplane isolation | Yes; optocoupler |
| Channel grouping | Potential separation in groups of 2 |
| Product lifecycle | Product cancellation |
Key Features
- Product designation: SIMATIC S7-300 SM 321 digital input module; spare part.
- Digital inputs: 8 digital inputs with an IEC 61131 type 1 input characteristic curve.
- Input voltage: AC input voltage; rated value 230 V, 120/230 V AC (47 … 63 Hz).
- Isolation: Digital inputs are isolated from the backplane bus by an optocoupler; channel-to-channel potential separation is in groups of 2.
- Connection: Required front connector: 20-pin.
- Module dimensions: Width: 40 mm; height: 125 mm; depth: 120 mm.
Frequently Asked Questions
What does Siemens order number 6ES7321-1FF01-0AA0 identify?
It identifies a SIMATIC S7-300 SM 321 digital input module with 8 isolated AC inputs.
Which specifications distinguish the 6ES7321-1FF01-0AA0 configuration?
The supplied configuration has 8 digital inputs, 120/230 V AC input voltage, and a required 20-pin front connector.
What should be checked against the nameplate before purchasing?
Check the complete order number 6ES7321-1FF01-0AA0 and the module designation SIMATIC S7-300 SM 321.
What quantity and destination are needed for a quotation?
Provide the required quantity and delivery destination for a quotation request.
