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SIMATIC PCS 7, UR2 XTR S7-400
rack central and distributed with 9 slots,
2 redundant PS can be plugged in for extended
temperature range and with conformal coating
The 6ES7400-1JA11-0AA1 is a Siemens SIMATIC S7-400 universal chassis that provides nine independent slots as a basic hardware bracket to house the power supply, central processing unit (CPU), and interface modules, and supports use as a central or expansion chassis.
Dual Integrated Backplane Buses
Provides 9 physical module slots
The entire housing is made of industrial-grade aluminum
In operational deployment and maintenance, this rack utilizes a rigid, fixed backplane bus structure that does not support hot-swapping under power, thereby ensuring electrical signal stability during long-cycle continuous operations. The backplane slots incorporate a highly fault-tolerant alignment mechanism, allowing the direct insertion and high-frequency data exchange of the entire S7-400 hardware catalog, including PS 405/407 power supplies, CPU 412/414/416/417, SM signal modules, and CP communication processors. Furthermore, the frame is equipped with a dedicated equipotential grounding terminal for hardwired connection to the enclosure's main ground bar, effectively draining high-frequency stray electromagnetic noise and serving as a reliable physical and electrical foundation for executing large-scale process control logic under relative humidity ranges of 5% to 95% non-condensing.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Siemens 6ES7400-1JA11-0AA1 UR2 XTR Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Thermal Power
Houses core modules like CPU 417 in central control rooms to manage boiler control systems (BCS) and data acquisition.
Petroleum Refining
Installed in explosion-proof cabinets of hydrocracking units, relying on ATEX approval to secure continuous logic control for crude distillation.
Steel Smelting
Carries S7-400 modules in blast furnaces and continuous casting lines, utilizing the aluminum housing and ground terminal to resist high dust and electromagnetic interference.
Air Separation
Deployed in air separation compressor control cabinets for large oxygen/nitrogen plants, providing stable K-bus communication pathways for multi-CPU operations.
Automotive
Deployed in the central control racks of large stamping shops and welding/assembly main lines, housing high-capacity communication processors to coordinate multi-robot networks.
Coal Chemical
Deployed in syngas compressor and coal-to-gas reaction control racks, utilizing the rigid backplane bus to ensure uninterrupted data synchronization for high-temperature/pressure interlock systems.
When utilizing the 6ES7400-1JA11-0AA1 rack, operators must ensure that all S7-400 modules are inserted with precise physical alignment to prevent bent pin damage on the backplane, and completely power off the chassis before installation as hot-swapping is strictly unsupported. The dedicated grounding terminal must be hardwired to the enclosure's main equipotential grounding bar to drain high-frequency electromagnetic noise and stabilize the K-bus and P-bus references. Additionally, field maintenance requires keeping environmental metrics within 5% to 95% non-condensing relative humidity and regular slot cleaning using low-pressure compressed air during scheduled turbine shutdowns.
The 6ES7400-1JA11-0AA1 (SIMATIC S7-400 UR2) is a 9-slot aluminum universal rack that integrates rigid P-bus and K-bus pathways for local data synchronization. Engineered with a high-strength aluminum structure measuring 257.5 x 290 x 27.5 mm, this rack supports horizontal installation under ambient temperatures from 0°C to +60°C. It is applicable for standard industrial environments and carries relevant hazardous area approvals including ATEX and IECEx certifications.
It is the UR2 aluminum rack (backplane) within the Siemens SIMATIC S7-400 PLC system, providing physical fixing, internal data communication buses, and power supply pathways for modules.
How many hardware slots does 6ES7400-1JA11-0AA1 feature?
It features 9 independent slots used to accommodate power supply modules, CPUs, input/output modules, and communication processors.
Is 6ES7400-1JA11-0AA1 a central rack or an expansion rack?
It belongs to the UR2 (Universal Rack) category, which can function either as a central rack holding the CPU or as a distributed expansion rack.
How to use products like 6ES7400-1JA11-0AA1?
Secure it vertically or horizontally onto the mounting plate of the control enclosure using screws, then insert S7-400 power supplies, CPUs, and I/O modules into its 9 slots sequentially.
Which buses are integrated inside 6ES7400-1JA11-0AA1?
It integrates Siemens proprietary P-bus (I/O peripheral bus) and K-bus (communication bus) within its backplane.
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