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2MLF-RD8A

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Honeywell 2MLF-RD8A is an eight-channel resistance-temperature-detector input module for the MasterLogic-200 PLC platform.
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Technical specifications for 2MLF-RD8A

  • Manufacturer:
    Honeywell
  • Part Number:
    2MLF-RD8A
  • Product Family:
    Honeywell MasterLogic 200
  • Product Type:
    MasterLogic-200 Eight-Channel RTD Input Module
  • Stock:
    1
  • RTD input channels:
    8
  • Measurement technology:
    Resistance temperature detector input
  • Digital conversion:
    Temperature value conversion in the module
  • Temperature indication:
    Converted temperature values available to the controller
  • User-defined scaling:
    Configurable scaling within the module functions
  • Channel processing:
    Average, alarm and filter functions
  • Engineering access:
    Monitoring and parameter settings through SoftMaster
  • Module indication:
    RUN status LED
  • Input diagnostics:
    Channel signal-disconnection status
  • Slot assignment:
    MasterLogic-200 flexible I/O module position
  • Operating ambient temperature:
    0 to 55 deg C
  • Storage temperature:
    -25 to 70 deg C
  • Operating humidity:
    5 to 95% RH, non-condensing
  • Storage humidity:
    5 to 95% RH, non-condensing
  • Occasional vibration, 10 to below 57 Hz:
    0.075 mm displacement
  • Occasional vibration, 57 to 150 Hz:
    9.8 m/s2 (1 G)
  • Continuous vibration, 10 to below 57 Hz:
    0.035 mm displacement
  • Continuous vibration, 57 to 150 Hz:
    4.9 m/s2 (0.5 G)
  • Shock resistance:
    147 m/s2 (15 G), 11 ms half-sine, three times per axis
  • Square-wave impulse immunity:
    +/-1,500 V
  • Electrostatic-discharge immunity:
    4 kV contact discharge
  • Radiated electromagnetic-field immunity:
    10 V/m from 27 to 500 MHz
  • Fast-transient/burst immunity, power:
    2 kV
  • Fast-transient/burst immunity, I/O and communication:
    1 kV
  • Installation atmosphere:
    Free from corrosive gases and excessive dust
  • Installation altitude:
    Below 2,000 m
  • Pollution degree:
    Below 2
  • Cooling method:
    Air cooling
  • Certifications and standards:
    UL 508; EN 50081-2; EN 50082-2; EN 61131-2
  • Weight:
    0.265 lbs (0.12 kg)
  • Estimated shipping dimensions:
    2.6 x 10.3 x 9.8 cm
  • Tariff Code:
    8538901190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Temperature Configuration & Programming Installation

Features:

  • Provides eight RTD temperature-input channels.
  • Integrates with the MasterLogic-200 PLC I/O platform.
  • Supports configured resistance-sensor measurement and diagnostics.
The 2MLF-RD8A order identifies the dedicated RTD-input function rather than a general analog module.

Eight resistance sensors can be brought into the PLC application for monitoring, alarming or control.

Channel type, wiring topology and scaling should be copied from the validated project before exchange.

Availability is confirmed against the complete 2MLF-RD8A identity, required condition, quantity and delivery destination at quotation.
Verified resources for Honeywell 2MLF-RD8A: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Acquire bearing and winding temperatures in a PLC-controlled machine.
  • Monitor utility temperatures from several resistance sensors in one rack slot.
  • Replace an existing MasterLogic-200 RTD module while retaining field wiring.
  • Each channel converts the configured RTD resistance characteristic to temperature.
  • Lead-wire compensation must match the actual two-, three- or four-wire arrangement documented by the project.
  • Open or inconsistent sensor circuits should be diagnosed before recalibration.
  • Select the correct RTD standard for each used channel.
  • Apply engineering-unit scaling and alarm limits in the MasterLogic project.
  • Unused inputs should follow the module's documented configuration practice.
  • Fit the module only to the compatible MasterLogic-200 base and rack position.
  • Separate low-level sensor wiring from high-energy conductors.
  • Maintain channel numbering and shield treatment when transferring conductors.
Description
2MLF-RD8A expands a Honeywell MasterLogic-200 station with eight RTD measurement channels. The module converts resistance-based temperature signals for use by the PLC program while preserving the channel organization documented for the 2MLF I/O family. Honeywell identifies the assembly as the eight-channel member of the MasterLogic 200 RTD input group, allowing several resistance-temperature measurements to share one modular I/O position.

It is suited to machinery, utility and process tasks that require several temperature points in one rack position. Sensor type, wiring method, scaling and fault response are established in the engineering software and must agree with the connected RTDs. Digital conversion, temperature indication and user-defined scaling make the module suitable for distributed thermal supervision, while filtering, averaging and alarms support stable application data.

Lead-wire arrangement and channel configuration are critical when replacing the module. Confirm base compatibility, RTD standard, conductor count and application scaling, then test each channel with a traceable resistance source before resuming control. SoftMaster monitoring and the module RUN indication should be used during commissioning, and each input-disconnection diagnostic must be confirmed without defeating the process wiring standard.
Alternative Names
2MLF-RD8A 2MLF RD8A 2MLFRD8A Honeywell 2MLF-RD8A MasterLogic 200 RTD Module Eight Channel RTD Input 2MLF-RD8A Honeywell MasterLogic Temperature Input Module
Technical notes
Verify the configured RTD type and lead-wire compensation for every 2MLF-RD8A channel; an incorrect sensor definition can produce credible but unsafe readings.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How many resistance sensors can Honeywell 2MLF-RD8A acquire?
It provides eight RTD input channels in the MasterLogic-200 I/O system.
What project setting determines the interpretation of a 2MLF-RD8A channel?
The configured RTD standard, wiring method and scaling tell the module how to convert resistance to temperature.
Which control tasks benefit from Honeywell 2MLF-RD8A?
It centralizes multi-point temperature monitoring for machines, utilities and process equipment.
How is a Honeywell 2MLF-RD8A supply offer qualified?
The offer identifies tested condition, available quantity, lead time and the exact MasterLogic-200 module code.
What must be validated when moving from another RTD card to 2MLF-RD8A?
Review sensor curves, lead compensation, channel isolation, base fit, scaling and fault handling before conversion.
Which supporting data should be attached to a 2MLF-RD8A request?
Include the rack and base model, RTD types, wiring diagrams, project version, channel count, quantity and destination.

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