Schneider BMXXBP0400 Rack

The BMXXBP0400 serves as a backplane rack for Modicon M340 automation platforms. This chassis holds up to four I/O modules in a single assembly. Its rectangular frame measures 260 millimeters in width. The rack height reaches 105 millimeters exactly. Depth stays at 85 millimeters. You will find this unit weighs approximately 0.95 kilograms. Therefore, installation requires sliding the rack onto a DIN rail. One backplane connector distributes power and data to all inserted modules.

Physical Layout and Connectors

The front face features four module slots with individual guide rails. Each slot includes a 64-pin backplane connector for module interfacing. A power supply connector resides at the left end of the assembly. Two grounding screws provide chassis earth connections for safety. Four DIN rail clips secure the rack to standard TS35 mounting rails.

Technical Specifications

Parameter	Specification
Rack Width	260 mm
Rack Height	105 mm
Rack Depth	85 mm
Unit Weight	0.95 kg
Module Slots	4 (M340 format)
Backplane Connector	64-pin per slot
Component Total	118 discrete parts
Backplane Bus Speed	100 Mbps
Max Current per Slot	2A at 24V DC
Total Backplane Current	8A maximum
Internal Energy Storage	680 µF capacitor bank
Operating Temperature	0°C to +60°C

Internal Design and Energy Storage

The BMXXBP0400 contains exactly 118 discrete components on its backplane. A 680 microfarad capacitor bank filters the incoming 24V DC power. This bank reduces voltage ripple for all four connected modules. Multilayer PCB traces maintain consistent signal integrity across the rack. The backplane includes separate power planes for logic and field voltages. LED indicators show power status at the rack level.

Operational Performance

This rack accepts up to four Modicon M340 I/O modules simultaneously. It distributes 24V DC power to every occupied slot position. Moreover, the rack handles high-speed communication via the backplane bus. You can install analog, digital, or specialty cards in any available slot. The unit includes keying features to prevent incorrect module insertion. Four DIN clips secure the rack for vibration-resistant mounting. Consequently, you achieve flexible system configuration for small automation projects. Schneider designed this rack for M340 platform compatibility. Its compact size saves valuable space inside control cabinets.

In summary, the BMXXBP0400 delivers reliable backplane performance. Use this rack for small to medium machine control applications. It supports up to four modules for cost-effective I/O expansion. Order this rack for your Schneider Modicon M340 system.