Honeywell 2MLF-AC8A MasterLogic-200 Analog Input Module

Product Description

The Honeywell 2MLF-AC8A is an 8-channel analog input module designed for the MasterLogic-200 PLC system. It reliably converts 0–20 mA or 4–20 mA current signals from field sensors into precise digital values for accurate process monitoring. Moreover, the module supports high-resolution A/D conversion, enabling consistent signal acquisition even in demanding industrial environments. Its compact DIN-rail design allows easy integration into existing control panels, ensuring both efficiency and flexibility. In addition, the module’s robust photo-coupler isolation enhances safety while maintaining signal integrity, making it ideal for process automation and energy management systems.

Key Features

• Eight analog input channels supporting 0–20 mA and 4–20 mA signals.
• High-resolution A/D conversion with precise digital output.
• Photo-coupler isolation protects the PLC from signal interference.
• Compact DIN rail mount design for easy installation.
• Fast conversion speed (250 μs/channel) for real-time process control.
• Robust operating temperature range from −20°C to +60°C.
• Fixed and variable I/O address assignment for flexible system integration.

Technical Specifications

• Manufacturer: Honeywell
• Model: 2MLF-AC8A
• Type: Analog Input Module (Current type)
• System Family: MasterLogic-200
• Channels: 8 analog inputs
• Input Signal Range: 0–20 mA DC, 4–20 mA DC
• Input Resistance: 250 Ω
• Digital Conversion: Unsigned: 0–16000, Signed: –8000 to +8000, Precise: 0–20000
• Maximum Conversion Speed: 250 μs/channel
• Absolute Maximum Input: ±15V, ±30 mA
• Isolation: Photo-coupler (input to PLC power)
• Terminal Connections: 18-point terminal
• I/O Addresses: Fixed: 64 points, Variable: 16 points
• Mounting: DIN rail compatible
• Dimensions: 125 × 50 × 130 mm
• Weight: 0.14 kg
• Operating Temperature: −20°C to +60°C

Typical Applications

The 2MLF-AC8A module is widely used across manufacturing plants, energy distribution systems, and chemical or process industries. For instance, it effectively monitors tank levels, pressure transmitters, and flow sensors. Its reliable signal acquisition ensures precise automation control, while the fast A/D conversion supports dynamic process adjustments. In addition, this module integrates seamlessly with MasterLogic-200 systems, providing engineers with real-time data for optimization and troubleshooting.

FAQ

Q: What type of signals does the 2MLF-AC8A accept? A: It accepts 0–20 mA DC and 4–20 mA DC current signals from field devices.

Q: Can it be installed in a standard DIN rail enclosure? A: Yes, the module is designed for DIN rail mounting and requires minimal installation space.

Q: Is the module isolated for safety? A: Yes, it provides photo-coupler isolation between input terminals and PLC power supply.

Q: How fast is the conversion speed? A: The maximum conversion speed is 250 microseconds per channel, suitable for real-time monitoring.

Q: Which industries commonly use this module? A: Typical applications include manufacturing, energy, water treatment, and chemical process automation.