The Honeywell 2MLF-RD4A is a 4-channel RTD (platinum resistance detector) temperature input module for the MasterLogic-200 (ML200 / ML200R) series PLCs. It directly connects to 3-wire Pt100 or JPt100 sensors, converts temperature signals into 16-bit digital values, and features built-in wire break detection, digital filtering, process alarms, and temperature rate-of-change alarms. It is suitable for industrial temperature measurement applications requiring high accuracy and reliability.
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Product Description
Brand/ Manufacturer: Honeywell
Model Number: 2MLF-RD4A
Product Type: Temperature Input Module
Condition: In stock
Product Origin: USA
Shipping port: Xiamen
Warranty: 12 months
Input channels: 4 (3-wire, single-ended)
Supported sensor: Pt100 (JIS C 1604-1997)
Effective temperature range: Pt100: -200.0…+850.0°C
Display resolution: 0.1°C
Accuracy: ±0.2% F.S. @ 25°C; ±0.3% F.S. @ 0…55°C
Temperature coefficient: ±100 ppm/°C
Conversion speed: 40 ms/channel (sequential sampling)
Resolution: 16 bits (0…65535 codes)
Data formats: Raw value, temperature (0.1°C), scaled value, percentage value
Wire break detection: Supported (3-wire basis)
Digital filtering: Time average, count average, moving average (configurable parameters)
Alarm functions: Process alarm (HH/H/L/LL), input change rate alarm
Isolation: Channel-to-logic optocoupler isolation, ≥ AC 560 V rms
Backplane 5 V current 450 mA
Connector: 18-point removable terminal block, M3×6 screws
Applicable wire size: 0.3…0.75 mm², outer diameter ≤ 2.8 mm
Operating temperature: 0…+55°C (-CC coated version: -20…+70°C)
Storage temperature: -25…+70°C
Relative humidity: 5…95% RH (non-condensing)
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