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| Place of Origin: | U.K. |
| Brand Name: | Siemens |
| Certification: | COO & COC |
| Model Number: | 6ES7521-1BL00-0AB0 |
6ES7521-1BL00-0AB0 SIEMENS SIMATIC S7-1500 Digital input module DI 32x24VDC BA
The Siemens 6ES7521-1BL00-0AB0 is a high-density 32-channel digital input (DI) module from the SIMATIC ET 200MP distributed I/O system, engineered for reliable and flexible signal acquisition in industrial automation. Supporting both sinking (NPN) and sourcing (PNP) sensor types without hardware changes, this module seamlessly interfaces with standard 24 V DC field devices such as proximity sensors, limit switches, pushbuttons, and photoelectric detectors—making it ideal for global machine builders and system integrators.
Designed with two independent groups of 16 inputs each, the 6ES7521-1BL00-0AB0 enables optimized power distribution and enhanced electrical isolation between input circuits. Each channel features adjustable input filtering (configurable via TIA Portal) to suppress electrical noise and contact bounce—critical for stable operation in environments with motors, inverters, or welding equipment.
Product Overview: Siemens 6ES7521-1BL00-0AB0
| Manufacturer | Siemens AG – Digital Industries |
| Product Family | SIMATIC ET 200MP / S7-1500 Distributed I/O System |
| Order Number | 6ES7521-1BL00-0AB0 |
| Module Type | Digital Input (DI), 24 V DC, universal (PNP/NPN compatible) |
| Number of Inputs | 32 channels (2 groups × 16 channels) |
| Input Circuit Type | Optocoupler-isolated, compatible with both sinking and sourcing sensors |
| Rated Input Voltage | 24 V DC (19.2–28.8 V) |
Product details pictures
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