Product Description
Key Features
- Isolated digital inputs: 16 digital inputs with potential separation between channels and between channels and the backplane bus; channel separation is in groups of 1.
- 24-48 V AC/DC input supply: Input voltage type: AC/DC. Load voltage L+ and L1 permissible range: 24 V to 48 V.
- 40-pin connection: Required front connector: 40-pin.
- SIMATIC S7-300 identity: Product: SIMATIC S7-300, digital input SM 321, isolated, 16 DI.
- Input characteristics: Input characteristic curve complies with IEC 61131, type 1. Parameterizable standard inputs: No.
- Lifecycle status: Product cancellation.
Applications
- Digital signal acquisition: Acquisition of 16 digital input signals through isolated AC/DC inputs.
Technical Summary
| Product | SIMATIC S7-300, digital input SM 321, isolated |
|---|---|
| Digital inputs | 16 |
| Input voltage type | AC/DC |
| Load voltage L+ permissible range | 24 V to 48 V DC |
| Load voltage L1 permissible range | 24 V to 48 V AC |
| Required front connector | 40-pin |
| Potential separation | Between channels and between channels and backplane bus; in groups of 1 |
| Isolation test | 1 500 V AC |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
What is the exact product identity?
It is Siemens 6ES7321-1CH00-0AA0, SIMATIC S7-300 digital input SM 321, isolated, with 16 DI.
How many digital inputs does the module have?
It has 16 digital inputs.
What input voltage does it support?
The input voltage type is AC/DC. The permissible load voltage range is 24 V to 48 V DC or 24 V to 48 V AC.
Which front connector is required?
A 40-pin front connector is required.
What is the lifecycle status?
Product cancellation.
