Brand: Siemens Description: Front connector Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 1 Payment Term: T/T Shipping Port: Shenzhen Siemens 6ES74921CL001AB0: SIMATIC S7-400, front connector for signal modules, for crimp contacts, 48-pole 84 units per packing unit.
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Manufacture |
Siemens |
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Model Number |
6ES74921CL001AB0 |
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Catalog |
ST74 |
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Country Of Origin |
Germany |
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HS CODE |
8538900000 |
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Dimension |
39*58.5*20cm |
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Packing Dimension |
41*60*22cm |
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Weight |
11.5kg |
Technical Parameters
Diagnostic Buffer Integration: Stores 128 timestamped system/diagnostic events (e.g., bus faults, station failures) with millisecond resolution, accessible via STEP 7 or TIA Portal for root-cause analysis.
Hardware Redundancy Support: Enables MRP (Media Redundancy Protocol) for ring topology networks with <200 ms reconfiguration time during cable breaks, compliant with IEC 62439-2 standards.
Voltage Isolation: Provides 1.5 kV galvanic isolation between PROFIBUS interface and backplane, tested per EN 61131-2 for surge immunity in high-noise industrial environments.
Loadable Driver Updates: Allows firmware upgrades via Flash EPROM without hardware replacement, supporting backward compatibility with legacy S7-300 PLC systems (e.g., CPU 315-2 DP).
Energy-Efficient Design: Operates at 5 V DC backplane power with 0.8 W typical consumption, featuring automatic sleep mode activation during network inactivity to reduce energy use.
Certified Robustness: Validated for shock resistance (15 g/11 ms) per IEC 60068-2-27 and chemical exposure (ISA 71.04 Level G3) for harsh process industries like oil/gas.
Functional Features
The 6ES74921CL001AB0 Siemens is ideal for performance-oriented applications.
High-Density Linking: Its 48-pole crimp contact construction permits quick and reliable set-up, minimizing system downtime when upgrading or servicing lines.
Modularity: Support for Siemens S7-400 signal modules makes the 6ES74921CL001AB0 scalable, meaning users can add more I/O stations to the system without sacrificing system integrity. There are 84 connectors per packaging unit which make installation in large quantities hassle free.
Associated Equipment
The Siemens 6ES74921CL001AB0 Easily connects to various Siemens automation devices:
Core Backbone: Compatible with Siemens S7-400 CPUs (such as 6ES7412-1XF04-0AB0) and power supplies (like PS307 6ES7307-1EA00-0AA0) to create a seamless control system.
Subordinate Devices: Can be used with digital I/O modules (e.g., 6ES7421-1BL01-0AA0) and analog modules (e.g., 6ES7431-7KF00-0AB0) and supports interoperability within Siemens’ industrial communication network.
Practical Use Cases
Application The Siemens 6ES74921CL001AB0 is used everywhere in industry:
Automotive Manufacturing : In the welding lines of robot stations, S7 400 PLC and sensors for part alignment and quality control, connector makes sure for sychronization of signals in real time between sensor unit and S7 400 PLCs thereby improving the accuracy.
Energy Management Systems: used in the grid monitoring connection, the 6ES74921CL001AB0 facilitates communication between power meters and central controllers thus supporting predictive maintenance and load balancing.
