Product Description
Key Features
- Digital input identity: SIMATIC S7-300 SM 321 isolated digital input with 16 digital inputs and 0.05 ms input delay.
- Supply and input voltage: Load voltage rated value: 24 V DC, with a permissible range of 20.4 V to 28.8 V DC. Input voltage rated value: 24 V DC.
- Input characteristics: Input characteristic curve in accordance with IEC 61131, type 1. Signal "0": -30 to +5 V; signal "1": 13 to 30 V.
- Connection and installation: Required front connector: 20-pin. Dimensions: 40 mm width, 125 mm height, and 120 mm depth.
- Isolation and diagnostics: Digital inputs are isolated from the backplane bus by an optocoupler and tested with 500 V DC. Channel-to-channel potential separation, diagnostics, alarms, and hardware interrupts are not available.
- Product lifecycle: Product cancellation.
Technical Summary
| Product identity | 6ES7321-1BH10-0AA0; SIMATIC S7-300 SM 321 isolated digital input |
|---|---|
| Digital inputs | 16 |
| Load voltage, rated value | 24 V DC |
| Permissible load-voltage range | 20.4 V to 28.8 V DC |
| Input voltage, rated value | 24 V DC |
| Input signal thresholds | Signal "0": -30 to +5 V; signal "1": 13 to 30 V |
| Input delay | 0.05 ms |
| Front connector | 20-pin |
| Backplane-bus isolation | Yes; Optocoupler |
| Product lifecycle | Product cancellation |
Frequently Asked Questions
What exact order number should be verified for this digital input module?
Verify order number 6ES7321-1BH10-0AA0 and the SIMATIC S7-300 SM 321 identity.
What supply voltage does 6ES7321-1BH10-0AA0 use?
The load voltage rated value is 24 V DC, with a permissible range of 20.4 V to 28.8 V DC.
What connector is required?
The required front connector is 20-pin.
What lifecycle information applies to this configuration?
Product cancellation applies. Confirm the required quantity, destination, and condition preference when requesting verification.
