Product Overview
Technical Summary
| Product | 6ES7321-1BL00-0AA0, SIMATIC S7-300 SM 321 digital input module |
|---|---|
| Digital inputs | 32 isolated digital inputs |
| Input voltage | 24 V DC rated; signal "0": -30 to +5 V; signal "1": 13 to 30V |
| Load voltage | 24 V DC rated; permissible range 20.4 V to 28.8 V DC |
| Front connector | Required, 40-pin |
| Installation capacity | 32 inputs at up to 40 °C; 16 inputs at up to 60 °C with horizontal installation |
| Lifecycle | Product cancellation |
Key Features
32 isolated digital inputs.
Rated input voltage: 24 V DC; signal "0": -30 to +5 V; signal "1": 13 to 30V.
Rated load voltage L+: 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
Required front connector: 40-pin.
Maximum cable length: 1 000 m shielded or 600 m unshielded.
Maximum 32 inputs at up to 40 °C with horizontal or vertical installation; maximum 16 inputs at up to 60 °C with horizontal installation.
Frequently Asked Questions
What exact line item is this?
It is Siemens 6ES7321-1BL00-0AA0, a SIMATIC S7-300 SM 321 digital input module with 32 isolated digital inputs.
What input voltage does it use?
The rated input voltage is 24 V DC. Signal "0" is -30 to +5 V, and signal "1" is 13 to 30V.
Which connector is required?
A 40-pin front connector is required.
What should be included with a quotation request?
Provide the required quantity, destination, schedule, and any additional BOM lines.
