General Electric IS220PSVOH1A Mark VIe Servo Control I/O Pack

Description

The General Electric IS220PSVOH1A is a specialized servo control I/O pack engineered for the Mark VIe and Mark VIeS control platforms. This device establishes the primary electrical interface between one or two I/O Ethernet networks and a TSVO servo terminal board. By interfacing directly with the WSVO servo driver module, it manages two distinct servo valve position loops, providing critical regulation for gas and steam turbine operations in heavy industrial setups.

Constructed as an IS220 special assembly, the pack features a distinctive black exterior chassis and non-PCB assembly layout designed to enhance environmental resilience. The internal hardware architecture integrates a processor board equipped with input power connectors, localized power supplies, flash memory, and RAM. An internal sensor is embedded within the hardware for continuous temperature monitoring. The front faceplate offers diagnostics via multiple status LEDs, including four indicators for the dual Ethernet networks (ENet1/ENet2), a Power and Attn LED, and two additional indicators labeled ENA1/2. The IS220PSVOH1A supports auto-reconfiguration during module replacement, which can be handled automatically or managed manually by an operator via the Component Editor inside the ToolboxST software application.

Features

• Establishes a dual-channel Ethernet interface linking control networks to a TSVO servo terminal board
• Cooperates with the WSVO servo driver module as a core I/O pack to handle two independent servo valve position loops
• Includes a front faceplate equipped with dedicated diagnostic LEDs for ENet1, ENet2, Power, Attn, and ENA1/2 status
• Built with a specialized black exterior chassis and non-PCB assembly configuration
• Contains an onboard processor board equipped with localized power supplies, flash memory, and RAM
• Features an integrated internal sensor for real-time hardware temperature tracking
• Enables software-driven auto-reconfiguration through the ToolboxST Component Editor interface

Applications

• Steam turbine automation and speed control systems
• Gas turbine fuel valve and nozzle positioning loops
• Power generation plant turbine control network distribution
• Industrial servo-actuated valve position management

Technical Specifications

Installation Guidelines

• Maintain the operating environment within the rated ambient temperature range of -30 to +65 degC to ensure system reliability and prevent component degradation.
• Connect the I/O pack strictly to verified compatible devices, specifically the IS200TSVCH2A terminal board and IS210WSVOH1A driver module.
• Securely latch the input power connectors onto the processor board before initializing the local power supplies.
• Execute a manual reconfiguration of the I/O pack whenever the associated terminal board is replaced.
• Adjust or verify the auto-reconfiguration settings through the Component Editor inside the ToolboxST software when swapping out the pack.

Compliance and Certifications

• UL E207685
• UL DEMKO 12 ATEX 1114875X
• UL 508 Ed. 17
• CSA-C22.2 No. 142-M1987
• ANSI/ISA-12.12.01-2015
• CAN/CSA-C22.2 No. 213-15
• UL 60079-0 Ed. 5
• UL 60079-15 Ed. 3
• CAN/CSA-C22.2 No. 60079-0:11
• CAN/CSA-C22.2 No. 60079-15:12
• EN 60079-0:2012
• EN 60079-11:2012
• EN 60079-15:2010
• Class I, Div 2, Groups A, B, C, D, T4
• Class I, Zone 2, AEx nA nC IIC T4
• Ex nA nL IIC T4 Gc X
• Ex ic nA IIC T4 Gc