Siemens SIMATIC S7-300 Digital Input Module SM 321
Siemens SIMATIC S7-300 16-channel 24V DC digital input module.
The Siemens SIMATIC S7-300 SM 321 digital input module (6ES7321-1BH50-0AA0) provides 16 isolated digital inputs for 24V DC signals. This module is designed as a source input, meaning that current flows from the external supply to the module's inputs. The isolation ensures that signals are protected from ground loops and electrical noise, enhancing system reliability. It features a 1x 20-pole connection for easy and efficient wiring.
This module is a critical component for acquiring binary signals from field devices such as pushbuttons, limit switches, and sensors in any SIMATIC S7-300 automation system. It is widely used in manufacturing, process control, and building automation applications where reliable digital signal acquisition is required. The isolated design makes it suitable for installations with varying ground potentials.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens SIMATIC S7-300 SM 321 digital input module. By choosing Stanlo, you can secure this essential I/O module, ensuring the continuity of your automation projects with quality, cost-effective surplus components.
| Channels | 16 Digital Inputs (DI) |
| Voltage | 24 V DC |
| Input Type | Source Input |
| Isolation | Isolated |
| Connection | 1x 20-pole |