Schneider BMXCPS2000 Replacement for Modicon M340

Product Overview

Schneider BMXCPS2000 Replacement for Modicon M340: Seamless Power Supply Upgrade

The Schneider Electric BMXCPS2000 is the standard AC power supply module for the Modicon M340 programmable automation controller platform. Rated at 100 W output with a 100–240 VAC input range, it slots directly into any BMX rack — including the BMXXBP0400, BMXXBP0800, and BMXXBP1200 backplanes — occupying the dedicated power supply slot at position 00. For facilities migrating away from aging Modicon Quantum or Modicon Premium systems, or replacing a failed unit in an existing M340 cabinet, the BMXCPS2000 provides a drop-in power path with no firmware changes required on the CPU side.

Compatibility Comparison Table

Seamless Upgrade Solutions

A complete M340 control system migration involves more than swapping the power supply. When replacing a failed or end-of-life BMXCPS2000, engineers typically audit the full rack assembly. The BMXP342020 CPU module remains the most common processor paired with this power supply in mid-range automation cells, and its Unity Pro / EcoStruxure Machine Expert project files transfer without modification when the PSU is replaced. On the I/O side, BMXDDI1602 digital input modules and BMXDDO1602 digital output modules share the same backplane bus voltage supplied by the BMXCPS2000, so confirming bus load budget before commissioning is essential.

For installations migrating from Modicon Premium TSX P57 series controllers, the physical cabinet footprint changes significantly. The M340 rack is narrower, so DIN-rail mounted terminal blocks — such as Schneider’s BMXFTB2000 pre-wired cable assemblies — simplify field wiring re-termination and reduce the risk of mis-wiring during cutover. Communication continuity is maintained through the BMXNOE0100 Ethernet communication module, which preserves Modbus TCP/IP addressing from the legacy system without requiring SCADA reconfiguration.

In multi-rack architectures, the BMXXBE1000 rack extension module connects remote I/O racks over the X-bus, and each remote rack requires its own BMXCPS2000 or BMXCPS2010 depending on local AC or DC supply availability. For applications with high analog I/O density, the BMXAMI0810 analog input module draws its operating power from the same 24 VDC bus regulated by the BMXCPS2000, making power budget verification a mandatory pre-commissioning step. Where signal isolation is required between field instruments and the M340 backplane, external signal isolators rated for HART or 4–20 mA loops are recommended in the wiring cabinet alongside the rack assembly.

Retrofit Guidance FAQ

Q: Can I replace a failed BMXCPS2000 without stopping the entire production line?
A: The BMXCPS2000 is not hot-swappable. The rack must be de-energized before removal. Plan a controlled shutdown window. With a spare unit on hand, physical swap and re-energization typically takes under 30 minutes for a trained technician.

Q: Do I need to re-download the PLC program after replacing the power supply?
A: No. The application program resides in the CPU module (e.g., BMXP342020), not in the power supply. Replacing the BMXCPS2000 does not affect program memory, retentive data, or I/O configuration.

Q: Is the BMXCPS2000 compatible with both 110 VAC and 220 VAC site supplies?
A: Yes. The module accepts 100–240 VAC across its full input range with automatic adaptation — no jumper or switch change is required when moving between 110 V and 220 V sites.

Q: What is the physical installation clearance requirement?
A: The BMXCPS2000 occupies one slot width in the BMX rack. Schneider recommends a minimum 50 mm clearance above and below the rack for convection cooling. No forced-air cooling is required at rated load in ambient temperatures up to 60 °C.

Q: Can this unit replace the power supply in a Modicon Quantum or Premium rack directly?
A: No — the BMXCPS2000 is mechanically and electrically specific to the M340 BMX rack form factor. It cannot be physically installed in a Quantum 140 series or Premium TSX rack. Migration from those platforms requires replacing the entire rack assembly with M340 hardware.

Q: What communication protocols does the M340 system support after this upgrade?
A: The M340 platform natively supports Modbus RTU (via serial port on the CPU), Modbus TCP/IP and EtherNet/IP (via BMXNOE0100 or BMXNOE0110 Ethernet modules), and CANopen (via BMXCAO0400 module). Protocol compatibility with existing SCADA or DCS systems should be verified before cutover.

Warranty Assurance

Every BMXCPS2000 unit shipped by TOPNLMS is covered by a 12-month replacement warranty from the date of delivery. Prior to dispatch, each module undergoes functional power-on verification: input voltage acceptance across the full 100–240 VAC range, output bus voltage stability check, and visual inspection for physical damage or counterfeit indicators. Units that do not pass inspection are quarantined and never shipped.

In the event of a warranty claim, TOPNLMS provides a direct replacement unit — not a repair — to minimize your system downtime. Our average response time for warranty replacement requests is within 2 business days of claim confirmation. Shipping for warranty replacements is covered by TOPNLMS for orders within mainland China; international warranty shipping terms are confirmed at the time of order.

For urgent procurement needs — including same-day quotation, express air freight, and consolidated shipment with other M340 components — contact our technical sales team directly. We maintain bonded stock of high-rotation M340 modules in Xiamen for rapid fulfillment.