IS420UCSCS2A
GE
Overview
The IS420UCSCS2A is a Dual Core Controller Module from GE. It executes control logic for the GE product portfolio architectures and operates from a 28 V dc supply.
Application & Technical Notes
As a dual core controller module, the IS420UCSCS2A is intended for deployment in panel-based control cabinets and machine enclosures where the GE product portfolio equipment is installed. It hosts the application program, executes the control cycle and orchestrates I/O scanning, communication and diagnostics for the station.
Key published characteristics include a 28 V dc rating, an operating temperature range of -40 to 70°C. These values should be confirmed against the current manufacturer datasheet before final selection, as options and suffixes vary by configuration.
Maintenance & Diagnostics
Respect the published operating temperature window (-40 to 70°C); do not exceed it during commissioning or in enclosed panels without airflow. Back up the application program and parameter set before any firmware or hardware change; verify the memory/real-time-clock battery where fitted and replace on schedule. Monitor the module health LED and controller diagnostics; plan spares for critical stations to minimise downtime. Always de-energise the circuit and follow lock-out/tag-out before handling; refer to the official instruction bulletin for service procedures.
Sourcing & Procurement
When sourcing the IS420UCSCS2A, distinguish three supply tiers: (1) genuine GE stock from an authorised distributor; (2) compatible equivalents or surplus/NOS (new-old-stock) from third parties; (3) alternative parts offering equivalent function. Genuine supply carries the full warranty and traceability; compatible or alternative items may be cheaper but should be validated for form, fit, firmware and certification before use in a live system. PLCXpert publishes this page as an independent reference and does not sell the part — verify every claim with the manufacturer or your distributor.
Confirm the CPU matches your GE product portfolio architecture, memory size, firmware revision and any required option/communication modules. Lead times and pricing vary by region and lifecycle status; obtain a current quote from an authorised channel rather than relying on stale listings.
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Frequently Asked Questions
What is the IS420UCSCS2A?
The IS420UCSCS2A is a dual core controller module from GE. It is described by the manufacturer as: Dual Core Controller Module.
What are the key technical ratings of the IS420UCSCS2A?
Its published highlights include 28 V dc, operating temperature -40 to 70°C. Full electrical, mechanical and environmental limits are listed in the manufacturer datasheet and should be confirmed for your exact suffix.
How is the IS420UCSCS2A mounted or installed?
Installation follows the standard GE product portfolio mounting practice for this device class; refer to the installation manual for exact dimensions and torque.
Is the IS420UCSCS2A compatible with my controller?
It belongs to GE's automation product portfolio. Confirm the specific rack, firmware revision, slot rules and configuration with the controller documentation before purchase, as compatibility depends on the exact system build.
What should I check before buying the IS420UCSCS2A?
Verify the genuine part number and suffix, confirm it matches your platform and ratings, check the current lifecycle/availability status, and buy from an authorised distributor. PLCXpert provides this reference only and does not sell the component.
Specifications (source data)
SPECIFICATIONS:
Part Number: IS420UCSCS2A Manufacturer: General Electric Series: Mark VIeS Product Type: Dual Core Controller Module Life Cycle Status: Active Redundancy Configurations: Simplex, Dual, and TMR Microprocessor: Dual core, 1.6 GHz AMD G-Series Span: -8 mV to +45 mV Power supply voltage: 28 V dc Voltage Range: 18 - 32 VDC Memory: 2 GB DDR3-1066 SDRAM Memory Storage: 128 GB Mounting: DIN-rail mounting Operating temperature: -40 to 70°C Size: 168 x 150 x 55 mm Weight: 1,327 g Repair: 3-7 Day Availability: In Stock Country of Origin: United States Manual: GEI-100867A
FUNCTIONAL DESCRIPTION:
IS420UCSCS2A is a Dual Core Controller Module manufactured and designed by General Electric as part of the Mark VIeS Series used in GE Distributed Control Systems. The dual-core controller runs the Mark VIeS Safety control applications used for functional safety loops to achieve SIL 2 and 3 capabilities. Mark VIeS Safety equipment is used by operators who are knowledgeable in safety-instrumented system (SIS) applications to reduce risk in critical safety functions. Safety controllers and distributed I/O modules are specifically programmed for safety control use, and this specific control hardware and software is compliant with the IEC 61508 certification. The Mark VIeS Safety controller runs on QNX Neutrino, a real-time, multi-tasking operating system (OS). The UCSCS2A is available beginning with ControlST V07.02 and supports Simplex, Dual, and TMR redundancy.
UCSC CONTROLLERS:
UCSC controllers are compact, stand-alone controllers that run application-specific control system logic used in a diverse range of applications, such as wind turbines, gas and steam turbines, and combined-cycle power plants. The UCSC controller offers the following advantages:
Single module No battery No fan No jumper settings required Flash memory can be conveniently updated Can be expanded to include seven additional I/O ports The UCSC controller mounts in a panel and communicates with I/O modules through on-board I/O network (IONet), PROFINET, High-speed Serial Link (HSSL), and/or other interfaces.
OVER-TEMPERATURE PROTECTION:
The UCSC controller uses internal temperature readings and logic to protect its internal electronics. Internal circuitry generates a warning at 85°C (185 °F) and shuts down at 95°C (203 °F). The UCSC will reboot once the internal circuitry detects the temperature has dropped below 75°C (167 °F). Independently, the microprocessor monitors its operating temperature generates a warning at 105°C (221 °F), and shuts down at 107°C (225 °F). A power cycle is required to recover from a microprocessor over-temperature shutdown. Both of these warnings drive the OT LED and are annunciated as diagnostic alarms.
The Mark* VIe and Mark VIeS Functional Safety UCSC controller is a compact, stand-alone controller that runs application-specific control system logic. It can be used in a diverse range of applications, from small industrial controllers to large combined-cycle power plants. The UCSC controller is a base-mounted module, with no batteries, no fans, and no hardware configuration jumpers. All configuration is done through software settings that can be conveniently modified and downloaded using the Mark controls platform software configuration application, ToolboxST*, running on a Microsoft© Windows© operating system. The UCSC controller communicates with I/O modules (Mark VIe and Mark VIeS I/O packs) through on-board I/O network (IONet) interfaces. The Mark VIeS Safety controller, IS420UCSCS2A, is a dual core controller that runs the Mark VIeS Safety control applications used for functional safety loops to achieve SIL 2 and SIL 3 capabilities. The Mark VIeS Safety product is used by operators that are knowledgeable in safety-instrumented system (SIS) applications to reduce risk in safety functions. The UCSCS2A controller can be configured for Simplex, Dual, and TMR redundancy. The non-safety Mark VIe controller, IS420UCSCH1B, can be interfaced with the Safety control system (through EGD protocol on UDH Ethernet port) as a controller for non-SIF loops or as a simple communication gateway to provide data with OPC® UA Server or Modbus® Master feedback signals, if needed by the application.
Reproduced from the manufacturer's published data.