Overview
Manuals
Assembly Boundary
Power and Ports
Source Boundary
Features:
- Honeywell model table identifies a complete redundant controller.
- Documented assembly comprises two CPMs and one IOTA.
- Redundant hardware summary lists separate power and multiple communication ports.
The direct Honeywell ControlEdge RTU Specification Sheet lists SC-UCNN11 as the ControlEdge 2020 redundant controller. Its ordering table footnote explicitly says the complete controller includes two CPMs and one IOTA. Honeywell defines a CPM as the electronic control processor and an IOTA as a passive assembly holding connectors and field wiring interfaces. This distinction is material when a quotation offers only a module rather than the complete model. The redundant hardware summary lists two 18-30 VDC power inputs, four Ethernet ports, two RS485 and two RS232 ports, an SD-card slot and expansion connector.
The December 2022 specification supports the SC-UCNN11 model and its stated system architecture, but it does not associate website number 51307573-176 with the complete assembly or any subcomponent. Check the supplied labels, quantity of CPMs, IOTA, firmware and hardware revisions, controller configuration, software licenses and installed release before procurement. Site maintenance must preserve both processor and termination connections, redundant power feeds, communication addressing and failover design. Follow the plant's isolation and Honeywell service guidance, record baseline diagnostics, and validate the controller and field communications after installation. Do not import C300 or Series 8 IOM specifications into this ControlEdge 2020 model.
The SC-UCNN11 51307573-176 Honeywell ControlEdge 2020 Redundant RTU Controller may still be available for purchase and support from Moore Automated Company beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell SC-UCNN11 51307573-176 official technical documentation and product links.
This multi-page Honeywell technical document contains the exact model and its technical data. Apply the values to the supplied type number and verify its revision before installation.
Honeywell's model table defines SC-UCNN11 as a complete redundant controller with two CPMs and one IOTA. A processor card alone is not the entire ordering-model assembly. Confirm what the available stock actually includes, its markings and revision, and whether both electronic modules and the passive termination hardware match the site's controller position.
The December 2022 Honeywell redundant-controller summary shows two 18-30 VDC power inputs, four Ethernet ports, two RS485 and two RS232 ports, an SD-card slot and an expansion connector. These are stated for the documented complete controller arrangement. Verify the installed release, enclosure, power supplies, cabling and network design before using them as replacement requirements.
The direct Honeywell PDF prints exact SC-UCNN11 and defines its assembly contents, but it does not map additional website number 51307573-176. Check that number from physical labels or a Honeywell parts record. The reviewed document is dated December 2022; current firmware support, licenses and replacement eligibility require a separate site-specific check.
