Overview
This module offers 16 digital inputs with a 24V DC operating voltage, ensuring high-speed signal detection and stable operation in demanding industrial conditions. Its compact, modular design allows easy integration with existing S7-300 racks, supporting scalable and flexible automation architectures.
Specification
| Parameter | Details |
|---|---|
| Model Number | 6ES7321-1BH02-0AA0 |
| Manufacturer | Siemens |
| Series | SIMATIC S7-300 / SM 321 |
| Product Type | Digital Input Module |
| Input Channels | 16 |
| Input Type | 24V DC, sink/source |
| Input Delay | 3.4 ms typical |
| Input Current | Approx. 7 mA per channel |
| Signal Level for “1” | ≥13V |
| Signal Level for “0” | ≤5V |
| Isolation | Optically isolated between channels and backplane |
| Power Supply Voltage | 24 V DC |
| Power Consumption | Approx. 1.6 W |
| Module Current Draw (from backplane) | 70 mA |
| Dimensions (W x H x D) | 40 mm × 125 mm × 120 mm |
| Weight | Approx. 300 g |
| Mounting Type | DIN rail |
| Protection Rating | IP20 |
| Operating Temperature Range | 0°C to +60°C |
| Configuration Software | STEP 7 or TIA Portal |
| Front Connector Type | 20-pin screw or spring terminal (optional) |
| Status Indication | LED indicators for channel states |
FAQ
A1: Yes, every 6ES7321-1BH02-0AA0 module we offer is 100% genuine, new, and factory-sealed from Siemens.
Q2: How fast can you ship this module?
A2: We typically ship within 3 days to 2 weeks, depending on order size and logistics options such as DHL, FedEx, or UPS.
Q3: What if the module fails or shows quality issues?
A3: We provide a 30-day return or replacement guarantee for any verified defects or performance problems.
Q4: Can this module detect both sinking and sourcing inputs?
A4: Yes, the 6ES7321-1BH02-0AA0 supports both sinking and sourcing 24V DC signals, offering flexibility in wiring.
Q5: Is it compatible with older S7-300 CPUs?
A5: Absolutely. The 6ES7321-1BH02-0AA0 maintains full backward compatibility across the SIMATIC S7-300 family.
Manual/Datasheet PDF
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