Honeywell SC-UCMX02 Non-Redundant RTU Controller ControlEdge RTU2020 Platform

The Honeywell SC-UCMX02 is a high-performance non-redundant controller designed for the ControlEdge RTU2020 platform, serving as a core component of Honeywell's remote terminal unit (RTU) solutions for industrial automation. This compact controller integrates 28 mixed I/O channels and advanced processing capabilities, making it ideal for oil and gas production, pipeline monitoring, water treatment, and remote site automation applications.

As the successor to the SC-UCMX01 model, the SC-UCMX02 brings enhanced memory, built-in cybersecurity features, and expanded protocol support to meet the demands of modern industrial IoT (IIoT) deployments.

Key Features

Feature Description

Integrated I/O 28 mixed I/O channels – eliminates separate I/O modules for compact installations

Built-in Security ISASecure Level 2 certified; no external firewalls needed; authentication and encryption for secure communication

Enhanced Memory 256 MB DRAM for complex control algorithms and local data logging

Dual Ethernet 2 x 10/100 Mbps ports for redundant network paths

Wide Temperature Range -40°C to +75°C operation – suitable for extreme environments

Low Power Consumption 1.8W typical, up to 20W max – ideal for solar-powered remote installations

Direct HART Support Built-in HART protocol on all I/O channels – no additional hardware required

Technical Specifications

Parameter Specification

Model Number SC-UCMX02

Part Numbers 51307198-175 / 51307198-276

Product Type Non-Redundant RTU Controller

Processor 400 MHz ARM Cortex-A8

RAM 256 MB

Flash Storage 512 MB

I/O Configuration 28 mixed points: 16 DI, 8 AI, 8 DO, 4 AO

Communication Ports 2 x Ethernet (10/100 Mbps), 3 x Serial (RS-232/RS-485)

Supported Protocols Modbus RTU/TCP, DNP3, IEC 61850, IEC 60870, MQTT, OPC UA

Power Supply 10–36 VDC (24 VDC nominal ±20%)

Power Consumption 1.8W typical / 20W max

Operating Temperature -40°C to +75°C

Storage Temperature -40°C to +85°C

Enclosure Protection IP66 rated

Surge Protection 4 kV (serial), 1.5 kV (Ethernet)

Weight 0.8 kg

Dimensions (H×W×D) 210 × 135 × 75 mm

Certifications UL/cUL, CE, ATEX, IECEx

Hardware Architecture

The SC-UCMX02 follows a modular design philosophy within the RTU2020 ecosystem:

CPM (Control Processor Module) – The SC-UCMX02 itself serves as the CPM, executing control logic and managing communications

IOTA (Input/Output Terminal Assembly) – Passive backplane (e.g., SC-TEPR01/SC-TEPL01) that mounts the CPM and provides field wiring terminals

IOM (Input/Output Modules) – Optional expansion modules (e.g., SC-UCNN11, SC-UMIX01) for additional I/O capacity

The built-in IOTA streamlines field wiring and accelerates installation, reducing both labor costs and commissioning time.