Honeywell SC-UCMX01 51307195-175 RTU2020 Non-Redundant Controller Kit with 28 Onboard I/O

Description

The Honeywell SC-UCMX01 51307195-175 is a complete remote terminal unit controller kit in the RTU2020 family, engineered for demanding remote automation, field data acquisition, and process monitoring applications. The package consists of a Control Processor Module (CPM) and a matching Input Output Termination Assembly (IOTA) carrying part number 51307195-175. Driven by a dual-core ARM Cortex-A9 32-bit processor operating at 667 MHz, this non-redundant assembly combines high-efficiency execution with ultra-low power consumption, drawing as little as 1.8 W typical under standard operating conditions.

This controller features 28 mixed onboard I/O channels, including 8 HART-enabled Analog Inputs and 2 HART-enabled Analog Outputs, eliminating the need for external HART signal converters. The onboard dynamic memory (128 MB RAM) and non-volatile flash memory (32 MB Flash plus 4 Mbit retentive storage) ensure stable data handling, execution cycle times under 100 ms, and retentive data preservation for over 20 years without battery reliance. Datalogging capabilities are built-in, supporting local Flash storage or expansion via an onboard SD card slot up to 32 GB.

Communication versatility is central to the architecture of the Honeywell SC-UCMX01. The unit is built with dual 10/100BaseTx Ethernet ports supporting auto-crossover and 1500 V RMS isolation, alongside two RS232 ports and two 2-wire RS485 ports. Supported industrial communication protocols include Modbus TCP, Modbus RTU/ASCII (Master/Slave), DNP3 TCP (Outstation/Slave Level 3+), and HART-IP Version 7 for instrument asset management via Field Device Manager. Designed for harsh field installations, all I/O and communication interfaces feature integrated 600 W transient voltage suppression.

Features

• Complete Integrated Assembly: Combines the Control Processor Module (CPM) and passive Input Output Termination Assembly (IOTA) under single ordering model SC-UCMX01.
• Low Power Architecture: Delivers high computing performance with a typical power draw of 1.8 W (1.6 W minimum to 4.6 W full field load).
• High-Density Onboard I/O: Provides 28 mixed channels onboard, including 8 Analog Inputs, 2 Analog Outputs, 10 Digital Inputs, 6 Digital Outputs, and 2 High-Speed Pulse/Digital Inputs.
• Integrated HART Capability: Supports HART protocol natively on onboard analog channels for local program access, diagnostic alarms, and HART-IP remote asset management.
• Extended Industrial Operating Range: Operates reliably in ambient temperatures from -40 degC to 75 degC.
• Versatile Serial and Ethernet Connectivity: Equipped with 2 Ethernet RJ45 ports, 2 RS232 serial ports, and 2 RS485 isolated/terminated ports supporting Modbus and DNP3.
• Industrial Surge Protection: Features 600 W peak pulse power transient voltage suppression on all I/O channels and serial/Ethernet communication ports.
• Flexible Datalogging & Events: Holds up to 80,000 DNP3 events in onboard Flash memory or up to 500,000 events on an optional SD card (up to 32 GB supported).

Applications

• Oil & Gas Wellhead Automation: Remote monitoring and control of pressure, temperature, and multi-variable HART transmitters at remote well pads.
• Pipeline Monitoring & Flow Measurement: Real-time data logging and liquid/gas flow computations using AGA 3, AGA 7, AGA 8, and API 11.1 function block libraries.
• Water & Wastewater Remote Facilities: Supervisory control and data acquisition for pump stations, lift stations, and remote reservoir monitoring.
• Substation & Remote Infrastructure: Integration with central SCADA networks via DNP3 TCP Level 3+ or Modbus communication links.

Ordering Information

Technical Specifications

General

Processor & Memory

Power Requirements

Onboard Input / Output (28 Channels)

Communication

Environmental & Environmental Ratings

Connections / Interfaces

Installation Guidelines

1. Pre-Installation Inspection: Verify that the hardware assembly (CPM unit mounted on IOTA 51307195-175) is free from physical damage and that all terminal blocks are properly seated.
2. DIN Rail Mounting: Snap the assembly securely onto a standard 35 mm DIN rail (TH35-7.5) inside an appropriately rated enclosure matching field hazardous location requirements.
3. Power Wiring: Connect a regulated 18–30 VDC power supply to the main power terminal block. Ensure polarity is correct before applying power.
4. I/O Channel Wiring: Connect field instruments according to signal type:
   • Connect 4-20 mA / 1-5 VDC sensors to Analog Input terminals.
   • Connect 24 VDC dry contacts to Digital Inputs.
   • Verify that Digital Output load currents do not exceed 80 mA per channel at 24 VDC.
5. Grounding & Shielding: Terminate field cable shields directly at the designated grounding bar or chassis ground terminals to ensure effective transient voltage protection.
6. Network Connectivity: Attach shielded CAT5e or CAT6 Ethernet cables to the RJ45 network ports for connection to local HMIs, radios, or SCADA switches.

Configuration / Commissioning / Replacement

Configuration Guidelines

• Use RTU Builder software installed on a compatible Windows PC (Windows 7 Pro SP1 or Windows Server 2008 R2) to create and download IEC 61131-3 logic programs (Ladder Diagram, Function Block Diagram, Structured Text, Instruction List, or Sequential Function Chart).
• Configure communication parameters (IP addresses, Modbus register maps, DNP3 point tables, serial baud rates) within RTU Builder.
• If HART instrument access is required, ensure the SP-IHARTP license is applied to enable pass-through data reading and remote asset management via HART-IP.

Commissioning Recommendations

• Perform a warm or cold reboot test via RTU Builder to confirm project persistence in Flash memory.
• Verify real-time signal values across all 28 onboard I/O channels using online monitoring in RTU Builder.
• Validate time synchronization performance using an SNTP server on the local network.
• Verify communication links with the central SCADA system over Modbus TCP or DNP3 TCP.

Replacement Recommendations

• Before removing an active module, upload and back up the current IEC 61131-3 project, configuration files, and datalog files using RTU Builder.
• Disconnect the main power input block prior to unseating wires or dismounting the hardware.
• Transfer field wiring connectors directly to the replacement unit to maintain pin integrity.
• Download the saved project and restore parameters to the replacement SC-UCMX01 controller.

Compliance and Certifications

• CE Mark: Certified under EN61010-1:1993, EN61326-1, and EN61326.
• FM Approval: Nonincendive for Class I, Division 2, Groups A, B, C, D (T4); AEx nA IIC T4 for Class I, Zone 2 (-40 degC <= Ta <= 75 degC).
• CSA Certified: Nonincendive for Class I, Division 2, Groups A, B, C, D (T4); Ex nA IIC T4 for Class I, Zone 2 (-40 degC <= Ta <= 75 degC).
• ATEX Certification: II 3 G Ex nA IIC T4 Gc (-40 degC <= Ta <= +75 degC).
• Environmental Standards: ANSI/ISA S71.04 Class G2 Airborne Contaminants (Standard); Class G3 option available.
• Enclosure Materials: UL 94V-0 flame-retardant rated.