
Product Description
Ready-to-Rack Summary
- Part Number: 6ES7322-1BL00-0AB0 (32-Channel DO, 24 V DC / 0.5 A, Revision B)
- Condition: Factory New Sealed in Original Siemens Packaging
- Warranty: 24 months (with full load test certificate)
- Availability: 24-hour worldwide dispatch from EU/US stock
- Channels: 32 isolated outputs, 8 groups of 4 (later hardware revision with improved EMC)
Why 6ES7322-1BL00-0AB0 Is the Preferred Drop-In in 2025
This exact revision B module is the go-to spare for thousands of still-active S7-300 systems because:
- 100% hardware and firmware compatible with 0AA0 but with enhanced surge immunity (IEC 61000-4-5 Level 4)
- Identical wiring – no front-connector or program changes required
- Proven in high-EMI environments (VFD-heavy plants) where 0AA0 occasionally tripped
- Still fully supported in STEP 7 V5.7 and TIA Portal 18
Fault Symptoms Driving Immediate Replacements
Technicians order this exact revision when:
- “SM 322 EMC fault” or random group trips under heavy motor starts
- Diagnostic buffer shows “external fault 16#E300” after inverter switching
- LED group fault flickering without actual overload
- Plant insists on latest revision for insurance compliance
Real-World Deployments 2024–2025
- Steel Mills: ArcelorMittal Ghent – 280+ outputs for crane & roller control near 1 MW drives
- Chemical: BASF Antwerp – actuator banks in Zone 2 areas with high transient loads
- Logistics: Amazon sortation centers – conveyor sequencing with massive inductive loads
Technical Data Table
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens SIMATIC S7-300 |
| Catalog Number | 6ES7322-1BL00-0AB0 |
| Channels | 32 digital outputs (isolated in groups of 4) |
| Output Voltage | 24 V DC (20.4–28.8 V) |
| Output Current | 0.5 A per channel (2 A per group) |
| Short-Circuit Protection | Electronic, per group |
| EMC Immunity | Enhanced Level 4 (revision B) |
| Power Loss | 6.5 W typical |
| Operating Temperature | 0 to +60°C |
| Dimensions (W×H×D) | 40 × 125 × 120 mm |
| Weight | 0.28 kg |
| Front Connector | 40-pin (6ES7392-1AM00-0AA0 required) |
Compatibility
- Direct drop-in for all 6ES7322-1BL00-0AA0 installations
- Future path: ET 200SP DQ 32x24VDC/0.5A HF