Technical Summary
| Product type | SIMATIC S7-300, digital input SM 321 |
|---|---|
| Lifecycle | Product cancellation |
| Number of digital inputs | 16 |
| Input voltage type | AC |
| Input voltage rated value | 230 V; 120/230 V AC (47 … 63 Hz) |
| Input voltage for signal "0" | 0 to 40V |
| Input voltage for signal "1" | 79 to 264V |
| Input current from backplane bus 5 V DC, max. | 29 mA |
| Power loss, typ. | 4.9 W |
| Required front connector | 20-pin |
Applications
AC digital signal acquisition
For connecting 120/230 V AC digital signals to a SIMATIC S7-300 input module.
Key Features
Exact module type
SIMATIC S7-300 digital input SM 321.
Input capacity
16 isolated digital inputs.
Supply and input rating
120/230 V AC with AC input type.
Connection requirement
Required front connector: 20-pin.
Lifecycle
Product cancellation.
Frequently Asked Questions
What is Siemens 6ES7321-1FH00-0AA0?
It is a SIMATIC S7-300 digital input SM 321 module with 16 isolated digital inputs.
What input voltage does 6ES7321-1FH00-0AA0 use?
It uses AC input voltage, with rated value 230 V; 120/230 V AC (47 … 63 Hz).
How many digital inputs are on this module?
There are 16 digital inputs.
What front connector is required for 6ES7321-1FH00-0AA0?
A 20-pin front connector is required.
What is the lifecycle status of this Siemens order number?
Product cancellation.
