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- GE
- IS220PSVOH1B
- Mark VIe Servo Control I/O Pack
- USA
- 162.6 mm × 162.6 mm × 121.9 mm
- 1kg
- Xiamen, China
- New & In Stock
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Product Introduction
The IS220PSVOH1B is a Servo Interface I/O Pack module designed for turbine or industrial control systems, particularly within the Mark VIe family of I/O racks. It acts as the interface between one or two Ethernet I/O networks and a servo terminal board (TSVO), enabling two servo valve position loops, LVDT feedback, pulse‑rate sensor inputs, and associated control logic.
This module is engineered for high‑performance servo regulation in gas‑ or steam‑turbine applications, where precise valve positioning, closed‑loop control and reliable actuator drive are critical. By integrating the servo interface and Ethernet I/O network gateway into a single plug‑in module, the IS220PSVOH1B simplifies the architecture, improves maintainability and delivers robust performance under demanding conditions.
In practical installations, this I/O pack is used in turbine governor cabinets, servo valve racks, and other automation control enclosures where two servo valves, LVDT feedbacks and pulse‑rate sensors are present. It supports diagnostics, redundant communications, and is suitable for modern control upgrades as well as retrofit scenarios.
Technical Specifications
| Parameter | Description |
|---|---|
| Module Type | Servo Interface I/O Pack (Servo Valve & Feedback Interface) |
| Supported Servo Loops | Two servo valve position loops via WSVO driver modules |
| LVDT Feedback Channels | 8 LVDT windings (excitation and return) |
| Pulse Rate Inputs | Two pulse‑rate sensor inputs (2 Hz to ~12 kHz) |
| Supply Voltage | Nominal 28 V DC |
| LVDT Excitation Output | 7.00 Vrms at ~3.2 kHz (±0.14 Vrms) |
| Pulse Rate Accuracy | ~0.05% of value from 2 Hz to 12 kHz (16‑bit resolution) |
| LVDT Input Filter | Low‑pass with three breakpoints at ~50 rad/s ±15% |
| Communication Ports | Dual Ethernet RJ‑45 ports for network redundancy |
| Operating Temperature | – Typically –30 °C to +65 °C |
| Storage Temperature | –40 °C to +85 °C |
| Dimensions | 162.6 mm × 162.6 mm × 121.9 mm |
| Weight (kg) | ~1.0 kg |
| Diagnostic Features | LED indicators for ENet1/ENet2, Power, Attn, ENA1/ENA2 |
| Mounting / Form Factor | Plug‑in I/O pack designed for Mark VIe rack architecture |
Applications
The IS220PSVOH1B finds use in several demanding industrial domains:
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Gas & Steam Turbine Control: Interfaces servo valve position loops and feedback sensors for turbine governors, enabling precise valve modulation, overspeed protection, and dynamic load following.
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Power Generation Plants: Used in generator auxiliary control and turbine blade actuation systems where servo valves regulate flow, pressure or position in real time.
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Industrial Automation: Employed in large actuator systems, hydraulic or pneumatic servo valve networks, where LVDT feedback and pulse‑rate sensing are required along with Ethernet I/O integration.
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Retrofit / Modernization Projects: Fits into existing Mark VIe or Mark VI I/O racks to replace legacy servo interface modules, bringing Ethernet connectivity and modern diagnostics without full system redesign.
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Harsh or Mission‑Critical Environments: Because of its industrial design, it is used in locations where reliability, redundancy and maintainability are essential—such as power‑station turbine cabinets, offshore platforms, or large process installations.
Advantages
Selecting the IS220PSVOH1B module provides several advantages:
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Integrated servo interface and network I/O gateway: Merging the servo valve control loops, LVDT/pulse‑rate sensors and Ethernet I/O into one pack reduces architecture complexity and wiring.
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High accuracy and resolution for feedback signals: With LVDT excitation and 16‑bit resolution on pulse‑rate inputs, it ensures precise measurement and control of critical signals.
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Redundant communications: Dual Ethernet ports enhance system availability and fault tolerance in mission‑critical setups.
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Compact and field‑serviceable form factor: The module’s size (~162.6 mm square) and plug‑in design ease replacement, upgrades and maintenance.
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Wide application suitability: Designed for turbine systems, but applicable to servo‑driven actuators, large valve systems and other servo/feedback control networks.
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Future‑proof network integration: With Ethernet connectivity, it supports modern I/O systems and simplifies connectivity to controllers and networks.
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Diagnostic capability: LED status indicators, internal temperature sensing and flash/RAM memory make monitoring and fault‑finding easier for maintenance teams.
Brand and Series
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Brand: GE Fanuc
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Series: Mark VIe I/O Pack Series (IS220 family)
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Product Type: Servo Interface/Servo Valve I/O Pack
The IS220 series includes diverse I/O modules (analog I/O, discrete I/O, communication modules, servo interface modules and protection modules) designed for the Mark VIe distributed control system architecture. The PSVO variant indicates “Servo Output / Valve Output” within the series.
Related Models – Same Series or Compatible
Here are five other models in the same IS220 family (or closely compatible) with key parameters for comparison:
| Model | Function Description | Key Parameters (Dimensions / Weight) |
|---|---|---|
| IS220PAICH2A | Analog Input/Output I/O Pack – high‑density analog I/O | Approx. 170 mm × 100 mm × 35 mm ; ~0.72 kg |
| IS220PPROH1A | Protection I/O Pack – turbine emergency trip logic module | Approx. 222 mm × 144 mm × 88 mm ; ~2.5 kg |
| IS220PPDAH1B | Power Distribution / Feedback I/O Pack | Approx. 160 mm × 160 mm × 120 mm ; ~1.0 kg |
| IS220PSCAH1A | Serial Communication I/O Pack (RS‑232/422/485) | Approx. 292 mm × 130 mm × 27 mm ; ~0.36 kg |
| IS220PCLAH1B | Power/Control Distribution Module | Approx. 227 mm × 175 mm × 88 mm ; ~1.30 kg |
Popular Models – Same Brand
Here are five popular modules from the GE Fanuc IS220 family, commonly found in industrial control systems:
| Model | Function Description | Key Parameters (Dimensions / Weight) |
|---|---|---|
| IS220UCSAH1A | Controller Pack (CPU) for Mark VIe systems | Approx. 233 mm × 177 mm × 44 mm ; ~2.27 kg |
| IS220PAOCH1B | Analog Output I/O Pack | Approx. 132 mm × 94 mm × 35 mm ; ~0.20 kg |
| IS220PAICH1A | Analog Input/Output Pack (earlier generation) | Approx. 150 mm × 100 mm × 50 mm ; ~0.70 kg |
| IS220PPRFH1A | PROFIBUS Gateway I/O Pack | Approx. 263 mm × 58 mm × 28 mm ; ~0.43 kg |
| IS220PDIAH1B | Discrete Input I/O Pack | Approx. 159 mm × 178 mm × 32 mm ; ~0.80 kg |
FAQ (10 Questions & Answers)
Q1: What is the primary function of the IS220PSVOH1B?
A1: It serves as a servo interface I/O pack that connects one or two Ethernet I/O networks to a servo terminal board, managing two servo valve position loops, LVDT feedbacks and pulse‑rate sensors.
Q2: What supply voltage does this module require?
A2: The module is designed for a nominal 28 V DC supply for internal electronics and servo interface functionality.
Q3: What are the approximate dimensions and weight?
A3: It measures approximately 162.6 mm × 162.6 mm × 121.9 mm and weighs about 1.0 kg.
Q4: How many servo loops does it support?
A4: It supports two servo valve position loops, typically using WSVO servo driver modules for actuation.
Q5: What type of feedback does the module accept?
A5: It accepts LVDT feedback through up to eight windings, and pulse‑rate inputs from 2 Hz to ~12 kHz for speed or flow sensing.
Q6: Does it support network redundancy?
A6: Yes, it includes dual Ethernet RJ‑45 ports, allowing redundant I/O network connectivity and improved fault tolerance.
Q7: What operating temperature range does it support?
A7: The typical operating range is approximately –30 °C to +65 °C, with storage capability down to –40 °C and up to +85 °C.
Q8: Is this module suitable for turbine applications?
A8: Absolutely — it is purpose‑built for turbine control environments, servo valve loops and feedback systems in gas/steam turbines.
Q9: How does this module aid retrofits or upgrades?
A9: Its plug‑in I/O rack form‑factor, Ethernet connectivity and compatibility with Mark VIe architecture allow existing installations to upgrade servo interface functionality without full system replacement.
Q10: What maintenance or diagnostic features are included?
A10: The module provides front‑panel LED indicators for network and power status, internal temperature sensing, flash/RAM memory for configuration, and options for auto‑ or manual reconfiguration of the pack when replaced.
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