Siemens 6ES7400-2JA00-0AA0 SIMATIC S7-400 UR2-H 18-Slot PLC Rack

The Siemens 6ES7400-2JA00-0AA0 SIMATIC S7-400 UR2-H rack provides 18 module slots arranged as two independent 9-slot segments, each with its own separated communication bus and P bus, the layout used for redundant S7-400H central and distributed configurations. It measures 482.5 mm wide by 290 mm high by 27.5 mm deep and weighs 4.1 kg. Rated ambient operating temperature is 0 to 60 degrees C.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• UL
• FM
• RCM
• KC
• EAC
• CCC

Selection Notes

The UR2-H's two 9-slot segments each run an independent communication bus and P bus, so a bus fault in one segment does not affect the other, the isolation an S7-400H redundant CPU pair needs. Pick this rack over a smaller central rack or an 18-slot rack with a shared communication bus when the application calls for full segment-level bus isolation across all 18 slots.

Applications

The rack description covers both central and distributed use, so the same UR2-H mounts an S7-400H CPU pair directly or serves as a distributed I/O rack connected back to a central S7-400H system. Its 0 to 60 degree C operating range and dual segment layout fit control rooms and process areas running redundant S7-400H systems, such as continuous production lines where a bus segment fault must not take down both halves of the CPU pair.