8-Channel 4-20mA Analog Output Card | GE IS220PAOCH1B
Manufacturer: GE Fanuc
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Part Number: IS220PAOCH1B
Condition：New with Original Package
Product Type: Packaged Analog Output Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The IS220PAOCH1B (functional acronym PAOC) is an authoritative Packaged Analog Output Module manufactured by GE for the Mark VIe Speedtronic turbine control system. This module is a mechanical necessity for the precise control of field devices, providing high-resolution 4–20 mA signals to drive actuators, control valves, and instrumentation. As a core component of the Mark VIe architecture, the IS220PAOCH1B facilitates seamless communication between the controller and the field, ensuring deterministic response times and superior accuracy. It is designed to operate in mission-critical environments, utilizing robust isolation and surge suppression to prevent electrical interference from compromising turbine stability.
Detailed Technical Specifications
| Attribute | Details |
| Manufacturer | GE / General Electric |
| Model Number | IS220PAOCH1B |
| Series | Mark VIe Speedtronic |
| Functional Acronym | PAOC |
| Product Type | Packaged Analog Output Module |
| Output Channels | 8-Channel Analog Outputs (High-Resolution) |
| Signal Range | 0–20 mA (Standard 4–20 mA loops) |
| Processor Speed | High-speed ARM-based local processing |
| Communication | Dual redundant Ethernet (IONet) ports |
| Isolation | Channel-to-channel and channel-to-logic galvanic isolation |
| Power Supply | 24 VDC ±10% (via redundant power connectors) |
| Operating Temp | -40 °C to +70 °C (-40 °F to 158 °F) |
| Weight | 0.6–0.9 kg (Shipping weight 2 Kg) |
| Dimensions | 160 × 120 × 60 mm (Compact Packaged Form Factor) |
Engineering and Operational Guidelines
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Precision Control Expertise: The IS220PAOCH1B utilizes high-resolution digital-to-analog converters (DACs) to provide precise current regulation. This expertise is critical for the modulation of fuel valves and IGV actuators, where even minor signal drift can impact turbine heat rate and emissions.
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Redundant Network Integrity: This module features dual Ethernet ports for connection to the Mark VIe IONet. This trustworthy design ensures that if one network path fails, the analog output maintains its current state or fails safely according to programmed logic, preventing unexpected turbine trips.
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Authoritative Protection Logic: Integrated hardware-level surge suppression and isolation protect the internal CPU from field-side ground loops and inductive spikes. This protective firewall is essential for long-term reliability in power plants and heavy industrial facilities.
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Real-Time Diagnostics: The module includes built-in monitoring for loop resistance and current readback. This authoritative diagnostic capability allows the Mark VIe system to detect open circuits or shorted field wiring immediately, providing clear fault codes via the ToolboxST software for rapid troubleshooting.
Technical FAQ
Q: Does the IS220PAOCH1B require a separate terminal board?
A: Yes. The IS220PAOCH1B is a "Packaged" module that mounts directly onto a terminal board, such as the TBAO or TPAO. The module contains the processing and I/O electronics, while the terminal board provides the physical connection points for field wiring.
Q: What is the significance of the "H1B" revision?
A: The "H1B" suffix indicates the hardware grouping and revision level. It is a professional best practice to ensure compatibility with your existing terminal board pinout and the firmware version residing in your Mark VIe controller.
Q: Can this module be hot-swapped while the turbine is running?
A: In redundant configurations (TMR), a single IS220PAOCH1B can often be replaced without tripping the turbine, provided the control logic and other healthy modules maintain the loop current. Always follow the specific site safety procedures for live-maintenance.