Why the BMXXBP1200 Rack Belongs in Your M340 Upgrade Plan
When you plan a Modicon M340 expansion, the rack is the foundation that determines how many modules you can deploy and how reliably they operate. The Schneider BMXXBP1200 is a 12-slot rack designed specifically for the Modicon M340 automation platform. It holds the bus X backplane that links your power supply, processor and I/O modules into one coordinated system. If you are replacing an aging rack or building a new panel, this unit gives you room to grow without changing your architecture.
What Is the BMXXBP1200?
The BMXXBP1200 is an accessory rack from Schneider Electric’s Modicon M340 range. It provides 12 bus X slots, so you can combine a BMXCPS power supply, a BMXP34 processor, I/O modules and specific application modules on a single backplane. The rack also includes one connector (XBE) for an expansion module. This layout keeps your control cabinet organized and simplifies module replacement during maintenance windows.
Technical Specifications That Matter
| Specification | Value |
|---|---|
| Range of product | Modicon M340 automation platform |
| Accessory / separate part type | Rack |
| Number of slots | 12 bus X |
| Product compatibility | BMXCPS power supply, BMXP34 processor, I/O module, specific application module |
| Power consumption | 0.74 W |
| Electrical connection | 1 connector (XBE) expansion module |
| Fixing mode | By 4 M6 screws plate; by 4 screws 4.32…6.35 mm panel |
| Product weight | 1.27 kg |
| IP degree of protection | IP20 |
| Ambient air temperature for operation | 0…60 °C |
| Relative humidity | 10…95 % without condensation |
| Protective treatment | TC |
| Sustainable offer status | Green Premium product |
| RoHS | Compliant – since 0612 – Schneider Electric declaration of conformity |
| REACh | Reference not containing SVHC above the threshold |
Key Parameters and Practical Benefits
The 12 bus X slots give you headroom for mixed I/O and application modules, which reduces the number of racks you need in a panel. The 0.74 W power consumption keeps the rack’s own load low, so your power supply budget stays focused on the modules. With an IP20 rating and a 0…60 °C operating range, the rack suits controlled cabinet environments where dust and moisture are managed. The TC protective treatment adds a layer of resilience for typical industrial air. At 1.27 kg, the rack is light enough for one technician to position during installation.
Where the BMXXBP1200 Fits
This rack supports three common scenarios. First, a plant upgrading an older M340 panel can move existing BMXCPS and BMXP34 modules onto a fresh 12-slot backplane, extending the life of the control system. Second, a system integrator building a new machine can plan a single rack that covers current I/O and leaves spare slots for future signals. Third, a maintenance team can standardize on one rack type across multiple cabinets, which simplifies spare parts stocking and reduces downtime when a rack needs replacement.
Installation and Mounting Guidance
The BMXXBP1200 mounts either on a plate with 4 M6 screws or on a panel with 4 screws sized 4.32…6.35 mm. Choose the method that matches your cabinet design. Keep the rack in a controlled enclosure to respect the IP20 rating and the 0…60 °C operating range. Maintain relative humidity between 10 % and 95 % without condensation. Before installing modules, confirm the rack is secure and the XBE expansion connector is accessible. Follow Schneider Electric’s M340 installation documentation for torque and clearance details.
Compatibility and Integration
The rack works with BMXCPS power supplies, BMXP34 processors, I/O modules and specific application modules. The single XBE connector lets you link an expansion module when your slot count needs to grow. Because the rack is part of the Modicon M340 platform, it integrates with the same programming and configuration environment you already use for the processor. This consistency reduces engineering time during upgrades.
Maintenance and Reliability
Inspect the rack periodically for loose screws, dust buildup and signs of overheating. Verify that cabinet cooling maintains the 0…60 °C range. Check the XBE connector for secure seating if you use an expansion module. Because the rack has no moving parts, wear is minimal, but environmental exposure remains the main risk. Keep the enclosure closed and filtered to protect the IP20 rating. If the rack shows physical damage or intermittent bus faults, replace it rather than attempting field repair.
Buyer’s Checklist Before You Order
Confirm your module count fits within 12 bus X slots. Verify your power supply and processor are BMXCPS and BMXP34 types. Check that your mounting hardware matches either the 4 M6 screw plate method or the 4.32…6.35 mm panel screws. Confirm your cabinet maintains 0…60 °C and 10…95 % relative humidity without condensation. Review the RoHS and REACh status if your project has compliance requirements. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
Q: How many modules can the BMXXBP1200 hold?
A: It provides 12 bus X slots for BMXCPS power supplies, BMXP34 processors, I/O modules and specific application modules, plus one XBE expansion connector.
Q: What mounting options does this rack support?
A: You can fix it with 4 M6 screws on a plate or with 4 screws sized 4.32…6.35 mm on a panel.
Q: What is the operating temperature range?
A: The rack operates from 0…60 °C with relative humidity of 10…95 % without condensation.
Q: Is the BMXXBP1200 RoHS compliant?
A: Yes. It is RoHS compliant since 0612 under Schneider Electric’s declaration of conformity, and the REACh reference does not contain SVHC above the threshold.
Q: What is the power consumption of the rack?
A: The rack consumes 0.74 W.
