Schneider BMXDDM16025 8DI/8DO Relay I/O Module

Product Overview

The Schneider Electric BMXDDM16025 is a mixed discrete I/O module for the Modicon X80 automation platform. It provides 8 discrete inputs (24 V DC) and 8 relay outputs in a single module slot, offering a compact solution for applications requiring both input sensing and output switching. The relay outputs support a wide voltage range, making this module versatile for controlling AC and DC loads from a single X80 rack position.

Key Specifications

• Product Family: Modicon X80 mixed discrete I/O module
• Inputs: 8 x 24 V DC discrete inputs
• Outputs: 8 x relay outputs
• Output Voltage: 24 V DC or 24 to 240 V AC
• Platform: Modicon X80 / M340 / M580
• Connection: 20-pin removable terminal block
• Protection: IP20
• Operating Temperature: 0 to 60 °C

Features and Benefits

• Mixed I/O design reduces module count and rack space requirements
• Relay outputs provide galvanic isolation and universal voltage compatibility
• 24 V DC inputs support standard industrial sensors and switches
• Removable terminal block enables fast module replacement without rewiring
• LED indicators for each input and output channel simplify diagnostics
• Compatible with both Modicon M340 and M580 PAC platforms

Applications

• Machine control requiring sensor inputs and actuator outputs in one slot
• Conveyor systems with limit switches and motor contactors
• Packaging equipment with mixed signal types
• Building automation with relay-controlled HVAC devices
• Process skids requiring compact I/O solutions

FAQ

Q: What is the difference between BMXDDM16025 and BMXDDM16022?
A: BMXDDM16025 has relay outputs; BMXDDM16022 has solid state (transistor) outputs. Both provide 8 inputs and 8 outputs.

Q: What terminal block is required?
A: The module requires a 20-pin removable terminal block such as BMXFTB2010 (screw) or BMXFTB2020 (spring).

Q: Is there a severe environment version?
A: Yes. BMXDDM16025H features enhanced coating for harsh environments.

Installation Guide

1. Install the module in any available X80 rack slot
2. Attach a 20-pin removable terminal block to the module front
3. Connect 24 V DC sensor wiring to the input terminals
4. Connect load wiring to the relay output terminals
5. Verify load voltages are within the relay rating (24 V DC or 24 to 240 V AC)
6. Energize and verify input/output LEDs indicate correct status

Selection Tips

• Select BMXDDM16025 when relay output isolation and voltage flexibility are required
• For solid state outputs, choose BMXDDM16022
• For severe environments, select BMXDDM16025H
• Verify total relay load current does not exceed module per-channel ratings
• Order compatible 20-pin terminal blocks separately