Key Features
- Digital input module: SIMATIC S7-300 digital input SM 321 with isolated inputs.
- 16 digital inputs: Provides 16 DI.
- Input voltage: 24-48 V AC/DC with single-point grounding.
- Front connector: Uses a required 40-pin front connector.
- Isolation: Isolation tested with 1 500 V AC.
- Product lifecycle: Product cancellation.
Technical Summary
| Product function | Isochronous mode: No |
|---|---|
| Digital inputs | Number of digital inputs: 16 |
| Input voltage | Type of input voltage: AC/DC |
| Load voltage L+ | Rated value (DC): 24 V |
| Load voltage L1 | Rated value (AC): 24 V |
| Power loss | Power loss, typ.: 1.5 W; at 24 V; 2,8 W at 48 V |
| Potential separation | between the channels and backplane bus: Yes; Optocoupler |
| Isolation | Isolation tested with: 1 500 V AC |
| Connection method | required front connector: 40-pin |
Applications
- Digital input signal acquisition: For collecting 16 digital input signals.
Frequently Asked Questions
What is the exact Siemens model number of this digital input module?
The model number is 6ES7321-1CH00-0AA0.
How many digital inputs does 6ES7321-1CH00-0AA0 provide?
It provides 16 digital inputs.
What input voltage does this SIMATIC S7-300 module support?
It supports AC/DC input voltage, with 24-48 V AC/DC noted in the product description.
What front connector is required for this module?
A required 40-pin front connector is specified.
What is the product lifecycle status?
Product cancellation.
