Configured for discrete 24 VDC positive logic signal acquisition in the Modicon X80 PLC backplane, the Schneider Electric BMXSDI1602 (BMXSDI1602 Discrete Input Module) provides direct electrical interface for 16 non-isolated current sink input channels. The module supports IEC 60947-5-2 compatible 2-wire and 3-wire proximity sensors and performs fixed 6 ms DC input filtering with integrated sensor voltage diagnostics.
Suffix Breakdown & Model Matrix
The supplied documentation identifies BMXSDI1602 as a single catalog model. No official suffix decoding or ordering matrix is specified in the available technical data.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | BMXSDI1602 |
| Brand | Schneider Electric |
| Series | Modicon X80 |
| Product Type | Discrete Input Module |
| Origin | Not specified |
| Weight | Not specified |
| Dimensions | Not specified |
| Number of Inputs | 16 |
| Input Type | Non-isolated discrete inputs |
| Input Logic | Current sink (positive logic) |
| Rated Input Voltage | 24 V DC |
| Input Current | 3.2 mA per channel |
| Supported Sensors | IEC 60947-5-2 2-wire and 3-wire proximity sensors |
| Sensor Supply Voltage | 19 to 30 V DC |
| Logic 1 Voltage | >= 11 V |
| Logic 1 Current | >= 2 mA |
| Logic 0 Voltage | <= 5 V |
| Logic 0 Current | <= 1.5 mA |
| Input Impedance | 7500 Ohm |
| Insulation Resistance | > 10 MOhm at 500 V DC |
| DC Filter Time | 6 ms typical, 6 ms maximum |
| Parallel Inputs | Supported |
| Backplane Current Consumption | 256 mA at 3.3 V DC |
| External 24 V Consumption | 100 mA at 24 V DC |
| Maximum Power Consumption | 3.57 W |
| Protection | Reverse polarity protection; 0.5 A fast-blow external overload protection |
| Sensor Diagnostics | Sensor fault < 14 V DC; sensor OK > 18 V DC |
| MTBF | 275940 h |
| IP Rating | IP20 |
| Operating Temp | -25 to 60 deg C |
| Storage Temp | -40 to 85 deg C |
| Humidity | 5 % to 95 % at 55 deg C, non-condensing |
| Operating Altitude | 0 to 2000 m; 2000 to 5000 m with derating |
| Protective Coating | Conformal coating |
| Standards | EN/IEC 61131-2, EN/IEC 61010-2-201, UL 61010-2-201, CSA C22.2 No. 61010-2-201 |
| Certifications | ATEX, CSA, EAC, Merchant Navy, RCM, TÜV, UL |
I/O Density Scaling within the Modicon X80 Platform
The BMXSDI1602 is designed for the Modicon X80 distributed I/O architecture, providing 16 discrete positive logic input channels within a single module footprint. Communication with the PLC processor is handled through the Modicon X80 backplane, while field devices interface directly with the module input terminals. The specified backplane current consumption of 256 mA at 3.3 V DC should be included in rack power budgeting when multiple high-density I/O modules are installed.
Frequently Asked Questions
Q: Does the BMXSDI1602 provide galvanic isolation between input channels?
A: No. The module is specified as a non-isolated discrete input module.
Q: Can multiple input channels be connected in parallel?
A: Yes. The technical specification explicitly states that input paralleling is supported.
Q: Is hot replacement supported while the PLC rack is energized?
A: The supplied technical documentation does not specify hot-swap capability. Installation and replacement should therefore follow the procedures defined for the target Modicon X80 system and controller.
Field Installation Guidelines
- Verify that the field supply voltage matches the specified 24 V DC positive logic input requirements before wiring.
- Use field devices compliant with IEC 60947-5-2 when connecting proximity sensors.
- Route discrete input wiring separately from high-power motor or inverter cables to reduce electrical noise coupling.
- Connect cable shielding according to the cabinet grounding practice defined for the control system to minimize interference.
- Confirm that the total rack power budget includes the module backplane current requirement before expanding the I/O configuration.
- Install the module only within the specified operating temperature, humidity, and altitude limits.
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