Honeywell MLE-DC32A MasterLogic 32-Channel 24VDC Digital Input Module

Product Overview: Honeywell MLE-DC32A

• The Honeywell MLE-DC32A is a high-density digital input module for MasterLogic systems.
• It interfaces field discrete signals with the PLC processor for real-time monitoring.
• This module supports 32 channels with a shared common terminal for efficient wiring.
• Engineers rely on its 1ms high-speed response capability for precision timing tasks.
• The lightweight 60g design reduces mechanical stress on the PLC backplane.

Technical Specifications

• Brand: Honeywell
• Model: MLE-DC32A
• Series: MasterLogic PLC
• Input Points: 32 Channels (Common Method: 32 point / COM)
• Rated Input Voltage: 24VDC (Range: DC20.4V to 28.8V)
• Rated Input Current: 4mA per channel
• Input Resistance: 5.6 kΩ
• On Threshold: DC19V or higher / 3mA or higher
• Off Threshold: DC6V or lower / 1mA or lower
• Response Time (Programmable): 1ms, 3ms, 5ms, 10ms, 20ms, 70ms, 100ms
• Insulation Resistance: 10MΩ or more (via Megger)
• Internal Current Consumption: 50mA
• Environmental Tolerance: Industrial grade anti-interference and vibration resistance
• Module Weight: 60g

Installation and Compatibility

• The MLE-DC32A is compatible with all MasterLogic 200/200R series backplanes.
• Mount the module securely on the rack before applying external 24VDC power.
• Use shielded cables for input signals to maximize high-frequency noise immunity.
• Ensure the total current load remains within the 50mA internal consumption limit.

Diagnostic and Maintenance Features

• Individual LED indicators display the logic status of each 32 input channels.
• The PLC CPU provides diagnostic data for module presence and communication errors.
• Digital filters are adjustable via software to match specific field sensor characteristics.
• Terminal blocks allow for easy testing of voltage levels during routine maintenance.

Typical Applications

• Monitoring limit switches and proximity sensors in conveyor systems.
• Collecting status feedback from motor starters and circuit breakers.
• Interfacing operator pushbuttons and selector switches in control panels.
• High-speed counting and pulse detection within the 1ms response window.

Shipping, Warranty, and Package

• Warranty: 12-month comprehensive warranty for all Honeywell modules.
• Packaging List: 1 x MLE-DC32A Module, Technical Data Sheet.
• Courier Services: Express shipping via FedEx, UPS, and DHL.
• Dispatch Time: Ready for shipment within 24-48 hours.

Purchasing Guide

• Confirm that your field devices utilize Sinking or Sourcing 24VDC logic.
• Check the CPU parameter settings to ensure the response time matches your application.
• Verify the I/O address mapping in your MasterLogic programming software.

Frequently Asked Questions (FAQ)

• What is the default response time for the MLE-DC32A?
• The factory default is 3ms, but you can adjust it via CPU parameters.
• Can I use this module with AC 24V signals?
• No, this module is strictly rated for 24VDC input signals only.
• How do I handle signals with high mechanical chatter?
• Set the software filter to 20ms or higher to stabilize the input logic.
• Is the common terminal shared by all 32 points?
• Yes, all 32 channels utilize a single COM point for wiring efficiency.
• What should I check if the LED is off but signal is present?
• Verify that the input voltage at the terminal is above the 19VDC "On" threshold.

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