Overview
Manuals
Advanced Application Rules
Features:
- SIMATIC S7-400, rack aluminum UR2
- Central and distributed with 9 slots, 2 redundant PS can be plugged in
- It can be used in both central control racks and distributed/expansion racks
It can simultaneously accommodate CPU modules, input/output (I/O) signal modules, function modules (FM), and communication processors (CP), providing high-strength physical support, precise alignment guidance, and excellent electrical grounding for each hardware component.
As a high-availability hardware core for factory and process automation, this rack supports the insertion of two redundant power supply modules (redundant PS). This dual power supply redundancy ensures seamless switching to backup power in the event of a power outage or failure of a single power supply module, preventing unexpected PLC system downtime due to power failure.
The 6ES7400-1JA11-0AA0 Siemens Rack aluminum UR2 may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7400-1JA11-0AA0 Rack aluminum UR2 manual(Datasheets), 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. All prices are shown in USD.
Segmented Bus and Redundant Bus: Backplane channels (P-Bus and K-Bus) operate completely uninterruptedly in all 9 slots. This allows the CPU in slot 3 to communicate directly with the Ethernet card in slot 9 without external network jumpers.
Redundant Power Balancing: When two power supplies are inserted into slots 1 and 2 respectively, they must be configured to evenly distribute the backplane load. If the input voltage of one power supply drops, the other will immediately take over the remaining system load without causing CPU failure or degraded logic performance.
Grounding Connection: A dedicated M6 grounding screw terminal is located at the bottom edge of the rack. In high-interference environments, this terminal must be directly connected to the rack's main copper ground bus using a thicker, low-impedance copper strip to prevent electromagnetic noise from interfering with data on the backplane bus.
