Honeywell MLE-RY16A 16-Channel Relay Output MasterLogic PLC Module

Product Overview

• The Honeywell MLE-RY16A is a high-density 16-point digital output module designed for the MasterLogic PLC series.
• It utilizes premium relay insulation to provide physical separation between control logic and field actuators.
• Engineers specify the MLE-RY16A for applications requiring robust switching of both AC and DC loads.
• This module features two independent 8-point common groups to allow flexible multi-voltage wiring configurations.
• The MLE-RY16A ensures long-term operational stability with a mechanical life exceeding 20 million cycles.

Technical Specifications

• Brand: Honeywell
• Model: MLE-RY16A
• Series: MasterLogic (ML200/200E)
• Output Channels: 16 Points (Relay Contact)
• Rated Load Voltage/Current: DC 24V 2A (Resistive) / AC 220V 2A (Cos Ø = 1)
• Max Load Capacity: AC 250V / DC 125V
• Common Method: 8 Points / 1 COM (Total 2 COMs, 5A Max per COM)
• Min. Load Threshold: DC 5V 1mA (Required for contact wetting)
• Mechanical Service Life: 20,000,000 operations or more
• Electrical Service Life: 100,000 operations at rated load
• Response Time: Off to On ≤ 10ms / On to Off ≤ 12ms
• Off Leakage Current: 0.1mA (AC 220V, 60Hz)
• Internal Current Consumption: 420mA (DC 5V)
• Diagnostic Indicators: 16 Individual Output Status LEDs
• Terminal Interface: Dual 9-pin Terminal Block Connectors
• Module Weight: 160g

Global PLC Spare HUB's Insight

• The Honeywell MLE-RY16A is a specialized workhorse for high-isolation industrial environments.
• Its relay-based architecture eliminates the leakage current issues often found in solid-state transistor modules.
• We recommend the MLE-RY16A for interlock circuits where "dry contact" signaling is mandatory for safety.
• The dual-connector design simplifies field maintenance by allowing group-based wiring separation for the MasterLogic system.

Target Equipment & Application Scenarios

• Compatible Equipment: Honeywell MasterLogic PLC Racks and specialized I/O expansion bases.
• Primary Applications: Solenoid valve control, motor starter interlocks, and external contactor driving.
• Process Control: Ideal for HVAC dampers, pump station sequencing, and conveyor belt signal management.

Diagnostic & Maintenance Capability

• Real-time Monitoring: Integrated LED array displays the logical state of each MLE-RY16A output point.
• Proactive Maintenance: High mechanical cycle rating allows engineers to forecast module replacement based on duty cycles.
• Fault Isolation: Independent common terminals (COM) help isolate electrical noise and faults between different load groups.

Logistics & Warranty Terms

• Warranty: 12-Month Comprehensive Quality Guarantee.
• Shipping Methods: Express shipping via FedEx, UPS, or DHL.
• Dispatch Window: Standard orders ship within 24 to 48 hours.
• Package Contents: One (1) New MLE-RY16A Relay Module in factory-sealed packaging.

Selection Guide

• Evaluate the L/R ratio for inductive DC loads to ensure relay contact longevity for your MLE-RY16A.
• Always install external surge absorbers (snubbers) when driving highly inductive loads to prevent contact arcing.
• Confirm the total load on each COM does not exceed the 5A hardware limit to prevent internal trace damage.
• Select this relay module specifically when you need to switch AC and DC loads within a single MasterLogic I/O slot.

Professional FAQ

• What is the primary benefit of the Relay Insulation in the MLE-RY16A?
• It provides a physical air gap that prevents high-voltage spikes on the field side from damaging the sensitive PLC backplane electronics.
• Can I use the MLE-RY16A for high-speed pulse width modulation (PWM)?
• No, the maximum switching frequency is 3,600 times per hour. For high-speed switching, a transistor output module is required.
• Why is there a minimum load requirement of DC 5V 1mA?
• This is the "wetting current" needed to clean the relay contacts; below this level, the contact resistance may become too high for reliable signaling.
• How do the 16 status LEDs help with troubleshooting?
• The LEDs show the command status from the CPU. If an LED is on but the field device is off, the issue is likely in the field wiring or the relay contact itself.
• Does this module support "hot-swapping" in a running system?
• While the MasterLogic series is robust, we recommend powering down the I/O rack before replacing the MLE-RY16A to prevent accidental short circuits.

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