| Product Type | S7-300 Digital Extension |
| Product Model | 6ES7322-1FF01-0AA0 |
| Supply Voltage Type | AC |
| Product Dimensions | 40 MM × 125 MM × 120 MM |
| Input current |
Incoming load voltage L1 (no-load), maximum value 2 mA
|
| Weight | 275 g |
High-Performance Digital Output Module for S7-300 Series: Model SM 322 DO 8xRelay, a standard signal module (SM) in the SIMATIC S7-300 PLC system—provides 8 relay contact outputs, ideal for industrial control applications requiring high isolation and mixed load types.
8-Channel Relay Outputs, AC/DC Load Compatible:Each channel features an independent electromechanical relay contact, capable of switching both AC and DC loads.Wide voltage support: up to 230 V AC / 30 V DC, with max switching current of 2 A (resistive load)—can directly drive contactors, small motors, indicator lamps, solenoid valves, etc.
Dual-Wire Independent Wiring Design:Each relay provides Normally Open (NO) and Common (COM) contacts, enabling flexible circuit design.Can be used as normally open or controlled via PLC logic—suitable for various control strategies.
Advanced Diagnostic Capabilities:Individual LED indicators per channel show real-time output status.Supports detection of common line faults (e.g., L+ power failure).Diagnostic data accessible via STEP 7 software for remote monitoring and troubleshooting
