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The IS220UCSAH1A is a high-performance embedded controller module designed for the Mark VIe distributed control system (DCS) family. It serves as a central processing or “brain” module, executing control logic, supervising I/O networks, and coordinating automation tasks in demanding industrial applications.
It is engineered for real-time response and reliability, using a robust micro-processor, passive cooling (fan-less), multiple network ports, and rugged design for industrial and turbine control environments. The module supports redundant configurations and integration with multiple I/O packs, providing flexibility and longevity in system architectures.
This controller is typically placed within the I/O rack architecture of a control system, and communicates with other modules via high-speed Ethernet connections. It enables complex tasks such as equipment protection, process automation, turbine load control, and network management. Its design emphasises maintainability, scalability and serviceability in industrial automation installations.
| Parameter | Description |
|---|---|
| Processor | 667 MHz Freescale PowerQUICC II Pro (PowerPC) |
| Memory | 256 MB DDR SDRAM (some variants show 512 MB) |
| Operating System | QNX Neutrino real-time OS |
| Supply Voltage | 18 V DC to 36 V DC (nominal 24–28 V typical) |
| Power Consumption | Approx. 12 W typical |
| Communication Ports | Multiple Ethernet RJ-45 ports (5 to 6 ports depending on revision), USB port |
| Mounting | Module for installation in Mark VIe controller rack or cabinet |
| Operating Temperature Range | 0 °C to +65 °C (some sources extend to –20 °C) |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 5 % to 95 % non-condensing |
| Dimensions | Approx. 233.4 mm × 177.8 mm × 44.45 mm (approx 23.34 cm × 17.78 cm × 4.445 cm) |
| Weight | Approx. 2.27 kg |
| Cooling | Passive (fanless) design |
| Protection Rating | IP20 (module installed in enclosure) |
| Redundancy Support | Triple-redundancy capability in control system architecture |
The IS220UCSAH1A is used broadly in high-demand industrial control environments including:
Gas and steam turbine control systems: executing startup/shutdown logic, load control, protection, and monitoring of turbine assets.
Power generation plants: acting as the main controller coordinating I/O modules, field devices, network communication and overall system logic.
Oil & gas processing facilities: managing compressors, pumps, and instrumentation in hazardous or harsh environments, often with redundant architectures.
Renewable energy systems: wind turbine farms, large scale integration where advanced control logic and robust communications are required.
Process automation industries: chemical plants, refining, manufacturing lines where modular control, high reliability and diagnostics are essential.
Because of its modular design and compatibility with I/O rack systems, the IS220UCSAH1A is also used in retrofit or upgrade projects where legacy systems are modernised but require continuity and compatibility.
Key advantages of the IS220UCSAH1A include:
High-performance controller core: With a 667 MHz processor and real-time OS, it handles complex logic and I/O tasks with speed and determinism.
Passive cooling and rugged design: The module uses no fan, reducing maintenance and improving reliability in dusty or vibrating environments.
Compact and serviceable form-factor: Its dimensions allow installation in dense control cabinets; front-panel ports and LEDs simplify maintenance and diagnostics.
Redundancy support: Enables triple-redundant controller architectures, dual/ multiple Ethernet ports, enhancing system availability and fault tolerance.
Wide integration capability: Interfaces with a broad range of I/O modules, networks and field devices—allowing flexible system design and expansion.
Long-term support and compatibility: Belongs to a mature series of industrial control modules, enabling lifecycle stability and system investment protection.
Diagnostics and maintainability: LED indicators, USB connection, accessible ports and network connectivity make monitoring, commissioning and servicing more efficient.
Brand: GE Fanuc (General Electric)
Series: Mark VIe Distributed Control System (IS220 I/O/Controller Pack Series)
Product Type: Embedded Controller Module
The IS220UCSAH1A is part of the IS220 “Pack” family of modules for the Mark VIe architecture, which includes analog I/O packs, discrete I/O packs, communication packs and controller packs. The “UCS” within its name denotes a controller class within the family (UCSA family).
Here are five other modules within the same series or closely related, with brief description and key parameters:
| Model | Function Description | Key Parameters (Size / Weight) |
|---|---|---|
| IS220PPRFH1A | PROFIBUS Master Gateway I/O Pack – integrates PROFIBUS field devices into the Mark VIe network. | Approx. 263 mm × 58 mm × 28 mm ; ~0.43 kg |
| IS220PSVOH1A | Servo Valve Output Pack – provides analog/PWM outputs for servo valve control in turbine systems. | Approx. 224 mm × 89 mm × 100 mm ; ~0.45 kg |
| IS220PAICH2A | Analog Input/Output Pack – high-density analog I/O module for process variables. | Approx. 170 mm × 100 mm × 35 mm ; ~0.72 kg |
| IS220PSCAH1A | Serial Communication I/O Pack – handles RS-232/RS-422/RS-485 devices in the I/O network. | Approx. 292 mm × 130 mm × 27 mm ; ~0.36 kg |
| IS220PPDAH1A | Power Distribution I/O Pack – manages DC power distribution and monitoring within the I/O rack. | Approx. 170 mm × 110 mm × 30 mm ; ~0.65 kg |
Here are five popular models from the GE Fanuc brand which are often used in similar automation systems:
| Model | Function Description | Key Parameters (Size / Weight) |
|---|---|---|
| IS220PSVOH1A | Servo Valve Output Pack – for precise valve control in turbine/industrial systems. | Approx. 224 mm × 89 mm × 100 mm ; ~0.45 kg |
| IS220PAOCH1B | Analog Output Pack – provides high-precision analog outputs for control loops. | Approx. 150 mm × 100 mm × 50 mm ; ~0.36 kg |
| IS220PAICH1A | Analog Input/Output Pack – earlier generation analog I/O module. | Approx. 150 mm × 100 mm × 50 mm ; ~2.0 kg |
| IS220PCLAH1B | Power/Control Distribution Module – for internal DC power distribution in the I/O rack. | Approx. 227 mm × 175 mm × 88 mm ; ~1.3 kg |
| IS220PPRAS1A | Some communication or distribution pack – used for I/O network bridging in the Mark VIe system. | Dimensions and weight vary by variant, typical ~0.40 kg |
Q1: What is the main function of the IS220UCSAH1A?
A1: It acts as the central controller in a Mark VIe system, executing control logic, supervising I/O modules and managing network communications.
Q2: What supply voltage does the module require?
A2: The module operates on DC power ranging approximately from 18 V to 36 V, typically around 24 V to 28 V DC.
Q3: What are the size and weight of this controller?
A3: Approximate dimensions are 233.4 mm × 177.8 mm × 44.45 mm and the weight is about 2.27 kg.
Q4: What kind of processor and memory does it include?
A4: It uses a 667 MHz Freescale PowerQUICC II Pro processor and typically 256 MB of DDR SDRAM (some variants 512 MB).
Q5: Can the module operate in harsh environments?
A5: Yes, it is designed for industrial conditions, passive cooling (no fans), temperature range typically 0 °C to +65 °C (some variants extend further) and supports wide humidity ranges.
Q6: What kind of communication ports does it provide?
A6: It provides multiple Ethernet RJ-45 ports (5-6), a USB port and other network/diagnostic interfaces to connect with I/O modules and system networks.
Q7: Does it support redundant configurations?
A7: Yes, the design supports triple-redundancy in control architectures, enabling high availability systems.
Q8: In which industries is this controller commonly used?
A8: Key industries include power generation (gas/steam turbines), oil & gas, renewable energy, process automation and manufacturing lines.
Q9: What are the maintenance benefits of this module?
A9: Its plug-in form, front-panel LEDs, USB port, and modular design simplify diagnostics, replacement and servicing, reducing downtime.
Q10: How does this controller contribute to system investment protection?
A10: Because it belongs to a mature architecture (IS220/Mark VIe), it enables long-term lifecycle support, integration with many I/O modules and upgrade paths without full system replacement.
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