Product Overview
Plant floors rarely stand still. Over the past three decades, control architectures have shifted from centralized racks to compact, distributed I/O blocks mounted right where the signals live. The Schneider 170ADI35000 belongs to that generation of practical, panel-friendly hardware: a Modicon Momentum discrete input base module that packs 32 channels of 24V DC sensing into a single slim unit.
This module is now discontinued. That status matters for anyone maintaining an existing Momentum installation, because the 170ADI35000 often sits at the heart of conveyor monitoring, valve feedback and machine interlock circuits. Oil AutoTech keeps these units moving through the supply chain so your line does not wait on a single obsolete part. Contact Oil AutoTech today for pricing and availability.
Technical Specifications
Channel Density and Grouping
The 170ADI35000 provides 32 input channels arranged in two groups of 16. That grouping is not cosmetic. Each group can be isolated from the other at 1780V AC, which helps contain faults and keeps noise from one machine section out of the next.
Signal Behavior
Inputs follow the IEC 1131-2 Type 1 standard with a true high logic state. The module accepts 24V DC across a working range of 19.2 to 30V, draws 250 mA at 24V DC, and presents a 4 kΩ input resistance. Field-to-bus isolation is rated at 500V AC.
Speed and Power
Response time is 2.2 ms off-to-on and 3.3 ms on-to-off — fast enough for most discrete sensing, limit switch and proximity detector tasks. Internal bus current consumption is 250 mA at 24V DC, while total power consumption runs 3 W typical and 5 W maximum.
Physical and Environmental
The unit measures 125 × 141.5 × 47.5 mm and weighs 0.35 kg. It carries an IP20 protection rating, so it belongs inside a clean enclosure rather than on an open machine frame. Note that channel-level diagnostics are not provided; the module does not report individual fault states back to the adapter.
Where This Module Fits
Oil and Gas Skids
Momentum I/O has long been used on compressor and metering skids where panel space is tight. The 32-channel density lets one base module handle a large bank of pressure switches, valve position feedbacks and level sensors without expanding the cabinet.
Discrete Manufacturing Cells
In packaging and assembly cells, the 170ADI35000 reads proximity sensors, pushbuttons and safety-monitoring contacts. The 2.2 ms response supports standard cycle times, though engineers should confirm timing budgets against their specific machine sequence.
Legacy Panel Upgrades
Because the module is discontinued, it is most often sourced as a drop-in replacement for a failed unit rather than for new designs. Keeping a tested spare on the shelf is a practical alternative to a full I/O migration project.
Installation and Setup
Mount the base module inside an IP20-rated enclosure on a standard Momentum carrier. Keep field wiring separated from bus connections, and respect the group isolation boundaries when routing 24V DC field power. Verify supply voltage stays within the 19.2 to 30V window before energizing. Because the module offers no channel diagnostics, commissioning should include point-to-point signal checks with a meter or test lamp.
Maintenance and Reliability
Inspection Routine
Schedule periodic visual checks of terminal torque, dust buildup and enclosure seals. Heat is the main enemy of any IP20 module, so confirm cabinet ventilation and filter condition.
Spares Strategy
With lifecycle status discontinued, the smartest reliability move is holding one or two tested spares. That approach avoids unplanned downtime while a replacement is located. Oil AutoTech supports this with fast dispatch, worldwide.
Compatibility and Integration
This module is part of the Modicon Momentum family and communicates through the Momentum bus to the associated adapter. It is not a standalone network device. Engineers integrating it into an existing control architecture should confirm adapter compatibility and backplane configuration before installation.
Selection Guide
Before buying, verify the exact part number, the 32-channel configuration and the 24V DC signal type against your existing module. Confirm your adapter model and carrier type match the Momentum platform. If you are unsure, Oil AutoTech offers hands-on technical selection help to match the right spare to your panel.
Frequently Asked Questions
Is the 170ADI35000 still in production?
No. This module is discontinued. Availability depends on remaining stock, so confirm current supply before planning a project around it.
Can I use it as a direct replacement?
If your existing module carries the same part number and channel configuration, it is a direct form-and-function match. Always verify the adapter and carrier in your panel first.
Does it provide channel-level diagnostics?
No. The module does not report individual channel faults to the adapter, so external signal checks are recommended during commissioning.
What voltage range does it accept?
It operates on 24V DC with a working range of 19.2 to 30V.
How fast does it respond?
Response time is 2.2 ms off-to-on and 3.3 ms on-to-off.
