Automated Logic MEX48U Control Module

Automated Logic MEX48U Control Module: Technical & Engineering Specification Guide

The Automated Logic MEX48U is a multi-equipment input/output (I/O) expansion module, designed primarily for commercial HVAC and advanced building automation systems (BAS). The module is intended to link directly with Automated Logic’s ME-line (Multi-Equipment) controllers and extends localized processing and monitoring envelopes without requiring a total system architectural rewrite.

The MEX48U is designed for mission-critical environmental control applications processing numerous discrete and analog data and performs precision loop control logic on complicated mechanical plant equipment such as air handling units, chillers and industrial boilers.

Model Details

• Manufacturer: Automated Logic Corporation (ALC)
• Series: ME-Line / Multi-Equipment Expansion Series
• Manufacturer Part Number (MPN): MEX48U

Technical Details: Automated Logic MEX48U

Key Features

1. Scalable I/O Architecture: Instantly increases primary controller capacity with dedicated input and output channels.
2. Universal Channel Flexibility: Supports diverse field point configurations, adapting effortlessly to thermistors, pressure transducers, current transmitters, and binary relay commands.
3. Direct Bus Integration: Mounts directly or remotely via local cabling to Automated Logic ME-line primary controllers for high-speed token ring communication.
4. Robust Power Regulation: Operates on standard industrial building automation 24 VAC infrastructure with onboard surge and transient protection circuitry.
5. Compact Footprint: Engineered for high-density electrical panel layouts and tight sub-panel constraints inside mechanical equipment enclosures.

Applications

• Large-scale Commercial HVAC Air Handling Unit (AHU) regulation
• Central Chiller and Boiler Plant sequencing and optimization
• Multi-zone VAV (Variable Air Volume) environmental management systems
• Industrial process automation and cleanroom temperature/humidity tracking
• Smart building legacy system modernization and hardware expansion

Engineer Expert’s Guide

Marine/Industrial Engineering Insight: When retrofitting or servicing control panels utilizing the MEX48U in high-vibration or moisture-prone environments (such as marine engine control rooms or coastal mechanical plants), always ensure terminal block retaining screws are torqued precisely to specification. Apply a light coat of dielectric spray to the ARCNet communication ports to prevent oxidation-induced packet loss.

Frequently Asked Questions

Can the Automated Logic MEX48U operate as a standalone controller?

No. The MEX48U functions strictly as an I/O expander module. It requires a parent Automated Logic multi-equipment controller to process control logic and execute programming sequences.

What power supply voltage is required for the MEX48U module?

The unit operates on a standard building automation system power supply of 24 VAC (50/60 Hz). Ensure adequate transformer VA sizing is calculated based on total connected field loads.

Is the MEX48U compatible with modern WebCTRL software versions?

Yes, when integrated into an approved Automated Logic network architecture, the data points managed by the MEX48U map smoothly into higher-level WebCTRL operator workstations.