Product Overview
Technical Summary
| Digital inputs | 8 |
|---|---|
| Input voltage | AC; rated value 230 V; 120/230 V AC (47 … 63 Hz) |
| Signal "0" input voltage | 0 to 40V |
| Signal "1" input voltage | 79 to 264V |
| Front connector | 20-pin |
| Input isolation | Between input channels and backplane bus: Yes; Optocoupler |
| Product lifecycle | Product cancellation |
Key Features
8 isolated digital inputs
The SM 321 module has 8 digital inputs with AC input voltage.
120 V/230 V AC input
Rated input voltage is 230 V; 120/230 V AC (47 … 63 Hz).
20-pin front connector
The required front connector has 20 pins.
Backplane bus current
Maximum input current from the backplane bus at 5 V DC is 29 mA.
Product lifecycle
Product lifecycle: Product cancellation.
Frequently Asked Questions
What exact product is 6ES7321-1FF01-0AA0?
It is a SIMATIC S7-300 SM 321 digital input spare part with 8 isolated digital inputs for 120 V/230 V AC.
What input voltage does this module use?
The input voltage is AC, with a rated value of 230 V; 120/230 V AC (47 … 63 Hz).
What connector is required?
A 20-pin front connector is required.
What should be included with a project quotation request?
Include the requested quantity, destination, schedule context, and any additional BOM lines.
