Schneider Electric BMXDDI3202K – 32-Channel 24VDC Discrete Input Module | Modicon M340 Platform
Engineering Background
The BMXDDI3202K is a high-density discrete input module engineered for the Schneider Electric Modicon M340 mid-range PLC platform. Designed to meet the rigorous demands of industrial automation, it provides 32 isolated 24VDC digital input channels in a single backplane slot, enabling compact and cost-effective I/O expansion for machine control, process automation, and infrastructure applications.
Product Positioning
Targeted at automation engineers and system integrators who require reliable, high-channel-count digital input acquisition within the Modicon M340 ecosystem. The BMXDDI3202K is the preferred choice for applications where panel space is at a premium and signal integrity is non-negotiable. It is fully compatible with Unity Pro / EcoStruxure Control Expert programming environments.
Complete Technical Specifications
- Part Number: BMXDDI3202K
- Manufacturer: Schneider Electric (Modicon)
- Platform: Modicon M340
- Module Type: Discrete (Digital) Input
- Number of Channels: 32
- Input Voltage: 24VDC (IEC Type 1 / Type 2)
- Input Current: ≥ 5 mA per channel (at 24VDC)
- Logic Level – State 1: 11–30VDC
- Logic Level – State 0: 0–5VDC
- Isolation: Optical isolation between field and backplane
- Input Filter Time: Configurable (1 ms / 3 ms / 12 ms)
- Channel Grouping: 2 groups of 16 channels (common per group)
- Backplane Bus: Modicon M340 X-Bus
- Connector Type: HE10 (MIL) 40-pin × 2
- Operating Temperature: 0°C to +60°C
- Storage Temperature: -25°C to +70°C
- Relative Humidity: 5% to 95% (non-condensing)
- Protection Rating: IP20
- Dimensions (H × W × D): 100 × 15 × 115 mm (1 slot)
- Weight: Approx. 120 g
- Certifications: CE, UL, cUL, IEC 61131-2
- Power Consumption (5VDC bus): ≤ 0.8 W
- Programming Software: EcoStruxure Control Expert (Unity Pro)
Proven Application Environments
- Discrete Manufacturing: Assembly line control, conveyor sequencing, end-of-line testing stations
- Building Automation: HVAC control panels, access control integration, fire & safety interlock systems
- Water & Wastewater: Pump station monitoring, valve position feedback, level switch acquisition
- Energy & Utilities: Substation automation, generator control, switchgear status monitoring
- Oil & Gas: Wellhead control, pipeline monitoring, ESD (Emergency Shutdown) systems
- Food & Beverage: Packaging line control, CIP (Clean-In-Place) sequencing, batch processing
Engineering Advantages
- High Channel Density: 32 inputs in a single 15 mm slot minimizes rack footprint and wiring complexity.
- Optical Isolation: Full galvanic isolation protects the CPU backplane from field-side transients and ground loops.
- Configurable Input Filtering: Software-selectable filter times (1/3/12 ms) allow optimization for both fast-response and noise-immune applications.
- HE10 Connector System: Industry-standard 40-pin MIL connectors support pre-wired cable assemblies, reducing installation time by up to 60%.
- Hot-Swap Ready: Supports module replacement under power (with appropriate M340 rack configuration), minimizing unplanned downtime.
- IEC 61131-2 Compliant: Guaranteed interoperability with IEC-standard field devices and sensors.
System Architecture & Signal Flow
Field-side 24VDC signals enter via dual HE10 connectors (Group A: CH0–CH15, Group B: CH16–CH31). Each channel passes through an RC input filter (configurable), then through an optical isolator to the backplane logic. The module communicates channel states to the M340 CPU via the X-Bus backplane at each scan cycle. Diagnostic LEDs (RUN, ERR, I/O status) provide real-time field-level visibility without requiring software connection. The module draws power exclusively from the 5VDC backplane bus — no external 24VDC module power supply is required.
Sourcing & Quality Verification
- Origin: Sourced from authorized Schneider Electric distribution channels and verified industrial surplus.
- Inspection Protocol: Each unit undergoes visual inspection, label authenticity verification, and functional power-on testing prior to shipment.
- Packaging: Ships in original or equivalent ESD-safe anti-static packaging with protective foam inserts.
- Warranty: 90-day operational warranty against manufacturing defects. Extended warranty available upon request.
- Counterfeit Prevention: All units verified against Schneider Electric genuine part markings, date codes, and holographic labels where applicable.
Procurement Process
- Confirm Part Number: Verify BMXDDI3202K matches your M340 rack configuration and I/O requirements.
- Request Quote: Contact us via email or phone for volume pricing, lead time, and availability confirmation.
- Place Order: Submit PO or order directly through Konmask.com. Payment via T/T, PayPal, or trade terms available for qualified accounts.
- Shipping: DHL / FedEx / UPS express worldwide. Export documentation (commercial invoice, packing list, COO) provided for customs clearance.
- After-Sales Support: Technical support available via email within 24 hours. RMA process available for warranty claims.
Technical FAQ
Q: Is BMXDDI3202K compatible with Modicon M340 racks BMX XBP 0400 / 0800 / 1200?
A: Yes. The module is compatible with all standard Modicon M340 backplane racks (4, 8, and 12 slot configurations).
Q: Can I use BMXDDI3202K with 120VAC field signals?
A: No. This module is rated for 24VDC inputs only. For 120VAC inputs, refer to the BMXDAI1604 or BMXDAI1602 series.
Q: Does this module support event-driven (interrupt) inputs?
A: The BMXDDI3202K supports standard cyclic scanning. For high-speed event inputs, consider the BMXDDI1602T with fast input capability.
Q: What cable assembly is recommended for the HE10 connector?
A: Schneider Electric BMXFCA500 (5m) or BMXFCA150 (1.5m) pre-wired cable assemblies are recommended for direct field wiring.
Q: Is the module available with firmware pre-loaded?
A: The BMXDDI3202K is firmware-independent; all configuration is managed via EcoStruxure Control Expert (Unity Pro) on the CPU.
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