Product Overview
Downtime in oil, gas, and industrial automation lines rarely waits for a purchase order. The Schneider Electric 170BDI35400 is a Modicon input module built to keep discrete signal acquisition running without drama. It packs 32 input points into a single module, runs on a 24 VDC supply, and draws no more than 250 mA. For maintenance teams replacing a failed card or integrators building a new panel, that combination means fewer modules, simpler wiring, and faster commissioning.
Technical Specifications
| Specification | Value |
|---|---|
| Product Line | Modicon |
| Name | Input Module |
| Voltage Supply | 24 VDC |
| Number of Input Points | 32 points |
| Input Resistance | 4 kOhm |
| Current Consumption | <= 250 mA at 24 V DC |
| Discrete Input Logic | Positive |
| Operating Temperature | 0°C to 60°C |
| Certifications | CE, CSA, UL |
| Weight | 0.56 lbs (0.26 kg) |
What the Key Ratings Mean in Practice
The 24 VDC supply matches the control voltage found in most modern panels, so the 170BDI35400 drops into existing architectures without a separate power conversion stage. Its 4 kOhm input resistance keeps load on the field circuit predictable, while the positive discrete input logic gives a clear, consistent interpretation of sensor and switch states. The 250 mA current ceiling matters in dense racks: it helps keep total backplane load within budget when many modules share one supply.
Where This Module Fits
Oil and Gas Skids
Wellhead panels and compressor skids rely on discrete feedback from pressure switches, valve position indicators, and level sensors. A 32-point module concentrates that I/O in one slot, which reduces cabinet footprint on space-constrained skids.
Water and Wastewater Control
Pump stations use discrete inputs for float switches, run-status contacts, and alarm relays. The 0°C to 60°C operating range suits typical panel environments, and the UL and CSA approvals support installation in North American facilities.
Factory Automation Retrofits
When an older I/O card fails, matching the original point count and voltage avoids rewiring the field side. The 170BDI35400 offers a practical replacement path for 24 VDC positive-logic input duty.
Comparison With Similar Input Modules
| Feature | 170BDI35400 | Typical 16-Point Module | Typical 32-Point Module |
|---|---|---|---|
| Input Points | 32 | 16 | 32 |
| Voltage Supply | 24 VDC | 24 VDC | 24 VDC |
| Input Resistance | 4 kOhm | Varies | Varies |
| Current Consumption | <= 250 mA | Lower (fewer points) | Often higher |
| Certifications | CE, CSA, UL | Varies | Varies |
A 16-point card doubles the slot count for the same I/O, while many 32-point alternatives draw more current. The 170BDI35400 balances density and load, which matters when rack space and power budget are both tight.
Installation and Maintenance Notes
Mount the module per the manufacturer’s panel layout and confirm the 24 VDC supply polarity before energizing. Because the unit uses positive discrete input logic, verify field device wiring matches that convention. Inspect terminal connections periodically for looseness or corrosion, and keep the panel within the 0°C to 60°C range. For safety-related circuits, follow the site’s safety manual and inspection schedule.
Selection Checklist
Before ordering, confirm your system uses 24 VDC positive-logic discrete inputs and that 32 points match your field device count. Verify the existing rack accepts this Modicon module footprint. If you are unsure about compatibility, the team at Oil AutoTech offers hands-on technical selection help and can confirm fit before you commit.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
FAQs
How many input points does the 170BDI35400 provide?
It provides 32 discrete input points on a 24 VDC supply.
What is the current consumption of this module?
Current consumption is <= 250 mA at 24 V DC.
What input logic does it use?
The module uses positive discrete input logic.
What certifications does it carry?
It meets CE standards and holds CSA and UL certifications.
What is the operating temperature range?
It operates between 0°C and 60°C.
