Schneider Electric BMXDRA1605 Relay Output Module – Obsolete Modicon M340 Spare Part

Technical Dossier

Product Details And Specifications

Schneider Electric BMXDRA1605 Relay Output Module – Obsolete Modicon M340 Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters such as rated voltage, current per channel, and switching frequency should be verified against the official Schneider Electric BMXDRA1605 hardware reference manual. DriveKNMS does not publish unverified specifications.

Solving the Discontinued Hardware Crisis

The Modicon M340 platform was introduced in the mid-2000s and rapidly became one of Schneider Electric's most widely deployed mid-range PAC solutions globally. Tens of thousands of M340 systems remain in active service across Europe, Asia, and the Americas. However, Schneider Electric's strategic shift toward the M580 platform and EcoStruxure Machine Expert software environment has placed M340 hardware — including the BMXDRA1605 — in a difficult supply position.

The BMXDRA1605 occupies a specific role in M340 architectures: it provides relay-based discrete output capability for applications where electrical isolation between the controller and field devices is a hard requirement. Relay outputs are standard in motor starter control, valve actuation, and alarm annunciation circuits. There is no software-configurable workaround for a failed relay output module — the physical hardware must be replaced.

Condition & Reliability Assurance

Every BMXDRA1605 unit processed by DriveKNMS undergoes a structured 5-step quality assurance protocol before dispatch review:

1. Visual Inspection: Full board-level inspection for physical damage, corrosion on connector pins, and PCB delamination. Units with compromised backplane connectors are rejected at this stage.
2. Electrolytic Capacitor Assessment: Relay output modules contain electrolytic capacitors in their power conditioning circuits. Aged capacitors are a primary failure mode in legacy hardware. Each unit is assessed for capacitor bulging, leakage, and ESR deviation from specification.
3. Relay Contact Integrity Test: All 16 relay channels are cycled and contact resistance is measured. Channels exhibiting contact welding, excessive resistance, or erratic switching behavior are flagged for rejection or repair.
4. Firmware and Label Verification: The hardware revision marking is cross-referenced against Schneider Electric's published revision history to confirm compatibility with the target M340 firmware version.
5. Functional Burn-In: Units are powered and exercised under simulated load conditions prior to final packaging. Only units that pass all five stages are released for shipment.

Key Features for System Maintenance

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Q: Can you source other Modicon M340 modules?
A: Yes. DriveKNMS maintains or can source a broad range of M340 platform components including CPU modules, analog I/O, discrete I/O, communication adapters, and power supplies. Submit your full BOM or parts list for a consolidated quotation.