Description
Siemens SIMATIC S7-300 Digital Output Module
Model: 6ES7 322-1BH01-0AA0 | SM 322 | 16 DO x 24V DC / 0.5A
Product Overview
The genuine Siemens 6ES7 322-1BH01-0AA0 SIMATIC S7 Digital Output Module (SM 322) is a high-density, reliable expansion hardware module engineered for the globally trusted SIMATIC S7-300 PLC platform. Equipped with 16 digital output channels operating at a nominal 24V DC / 0.5A per channel, this process unit utilizes advanced optocoupler electronic isolation to provide superior signal separation and noise immunity. It delivers seamless logic integration and microsecond-response switching loops to command field actuators, control relays, indicators, and solenoids, making it an essential module for boosting processing footprints on high-demand production lines.
Technical Specifications
| Parameter | Specification Details |
|---|---|
| Brand / Manufacturer | Siemens Automation (SIMATIC) |
| Part Number Reference | 6ES7322-1BH01-0AA0 (6ES7 322-1BH01-0AA0) |
| Module Classification | SM 322 Digital Output (DO) Expansion Block |
| Total Output Density | 16 Electrically Isolated Output Channels |
| Nominal Load Voltage | 24V DC (Regulated Control Framework) |
| Output Current Rating | 0.5A per channel (optimized for field control arrays) |
| Electrical Isolation | Optocoupler Isolation in groups of 8 channels |
| Required Front Connector | Standard 20-Pin configuration layout (sold separately) |
Key Features & Operational Benefits
- Optocoupler Signal Safety Shielding: High galvanic isolation isolates vulnerable internal CPU logic matrices from inductive field spike feedbacks and cross-talk anomalies.
- Real-Time LED Diagnostic Block: Front-mounted status lights indicate active signal configurations instantly, minimizing down-time during troubleshooting.
- Robust S7-300 Rail Design: Durable structural footprint snaps easily into standard backplane rail slots for reliable, vibration-resistant connections.
- High Thermal Adaptability: Built with heavy-duty industrial components to manage heavy, continuous switching profiles in demanding panel environments.

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