The SIEMENS 6ES7321-1BL00-0AA0 is a high-performance digital input module from the SIMATIC S7-300 family, specifically the SM 321 series. Designed for demanding industrial environments, this module provides 32 isolated digital inputs at 24 V DC, making it a cornerstone for modern PLC-based control systems. Its robust construction and proven Siemens engineering ensure precise signal detection and reliable operation in applications ranging from manufacturing lines to process control. The module supports a 40-pole front connector for straightforward field wiring, and its galvanic isolation per channel group minimizes electrical interference. With a net weight of just 0.300 kg and compact packaging dimensions (12.80 x 15.00 x 5.00 cm), it is easy to handle and install. This unit is fully RoHS compliant, with substance restrictions met since March 2008, and originates from Germany, guaranteeing premium quality. Backed by a standard product class (A) that allows returns within guidelines, the 6ES7321-1BL00-0AA0 is a trusted choice for system integrators and maintenance teams worldwide.
| Specification |
Details |
| Product Type |
Digital Input Module (SM 321) |
| Article Number |
6ES7321-1BL00-0AA0 |
| Number of Digital Inputs |
32 (isolated) |
| Input Voltage |
24 V DC |
| Connection Method |
1x 40-pole front connector |
| Galvanic Isolation |
Yes (per channel group) |
| Rated Input Current |
Typical 7 mA per channel at 24 V DC |
| Input Delay (at 24 V) |
1.2 ms to 4.8 ms (typical 3 ms) |
| Power Consumption from Backplane Bus |
Approx. 100 mA (5 V DC) |
| Power Loss |
Typical 4.5 W |
| Operating Voltage Range |
20.4 V to 28.8 V DC |
| Ambient Operating Temperature |
0 °C to +60 °C |
| Storage Temperature |
-40 °C to +85 °C |
| Relative Humidity (non-condensing) |
Up to 95% at 25 °C |
| Protection Class |
IP20 |
| Dimensions (W x H x D) |
40 mm x 125 mm x 120 mm (approx.) |
| Net Weight |
0.300 kg |
| Packaging Dimensions (L x W x H) |
12.80 cm x 15.00 cm x 5.00 cm |
| Country of Origin |
Germany |
| RoHS Compliance |
Since 31.03.2008 |
| Product Lifecycle (PLM) |
PM400: Phase Out Started (since 01.10.2023) |
| Export Control Regulations |
AL: N / ECCN: 9N9999 |
| Estimated Dispatch Time |
1 working day |
| Packaging Quantity |
1 piece |
| Commodity Code |
85389091 |
| EAN |
4025512000000 (example based on typical Siemens coding) |
| Product Group Code |
R151 |
| eClass Version |
27-24-22-04 (multiple versions supported) |
| ETIM |
EC001419 |
| UNSPSC |
32-15-17-05 |
| WEEE Take-Back Obligation |
Yes |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22