IS200TSVCH2A | 24V Servo Valve Control H2A

Description

Product Introduction (Anti-Template)

When your turbine has multiple servo valves—for inlet, reheat, and extraction valves—you need a board that can handle them all without taking up half the rack. The IS200TSVCH2A is the high-density variant of the TSVC series, designed to control multiple servo valve channels on a single termination board. This board translates digital commands into the analog signals that position multiple turbine valves, saving valuable rack space in complex governing systems.

What does the H2 density deliver? The H2 variant offers more servo valve control channels per board than the H1—typically enough to handle multiple valve positions in a single slot. The ‘A’ revision brings the same improvements as the H1A: improved output linearity and lower drift on the servo drive channels. Compared to running multiple H1 boards, the H2 saves rack space and reduces backplane loading. This board is a drop-in replacement for the IS200TSVCH2, with no software changes required.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement: IS200TSVCH2 — The base revision without the ‘A’ suffix. Identical pinout, mounting, and software interface. The ‘A’ revision has improved linearity and lower drift. No software changes required.

⚠️ Software Compatible: IS200TSVCH1A — Lower-density H1 variant. Fits the same slot but has fewer servo channels. Requires software reconfiguration to map channels. Budget 4-6 hours.

⚠️ Software Compatible: IS200TBCI1A — General-purpose analog I/O board. Lacks servo-specific capability. Requires external servo amplifiers and complete hardware/software rework. Budget 8-12 hours.

❌ Hardware Incompatible: IS200TBQGH1A — Excitation termination board. Different pinout and application. Not applicable.

Frequently Asked Questions (FAQ)

Q: What’s the difference between the H1 and H2 variants of the TSVC series?

A: The H2 variant has higher channel density—more servo valve control channels per board than the H1. This saves rack space in applications with multiple servo valves (inlet, reheat, extraction, etc.). The channel ratings are the same; just more channels per board.

Q: What improvements does the ‘A’ revision have over the base TSVCH2?

A: The ‘A’ revision has improved output linearity and lower drift on the servo drive channels, resulting in more precise valve positioning.

Q: Can I replace a TSVCH2 board with a TSVCH2A without any changes?

A: Yes. The ‘A’ is a drop-in replacement. No software changes, no wiring changes, no configuration changes.

Q: What types of servo valves can the TSVC control?

A: The TSVC controls electro-hydraulic servo valves used in turbine governing systems—typically for inlet, reheat, and extraction valves. The board provides the analog drive signals and conditions position feedback.

Q: What bench testing should I do before installing a TSVC board?

A: Standard servo protocol with multiple channel verification. First, visual inspection. Second, verify continuity on all channels. Third, apply power and verify output signal ranges on each channel. Fourth, simulate feedback signals on each channel.

Q: Is the TSVC board hot-swappable?

A: We strongly advise against hot-swapping servo control boards. Power down the cabinet segment before swapping.

Q: How do I verify I’m getting a genuine TSVC board?

A: Check component markings against GE documentation. Weigh the board; due to higher density, it should be about 395 grams. Look for the GE holographic security label.

Q: Where do I find the official wiring diagram for the TSVCH2A?

A: GE document GEK-130551 covers the TSVC series. The H2 variant is detailed in the section specific to that configuration. Pay special attention to the channel numbering—it’s different from the H1. Always cross-reference against your cabinet’s as-built drawings.

A-B 1756-L82E PLC
MOTOROLA MVME162-213 PLC
SCHNEIDER ATS48C59Q
ABB 3BHB005243R0105 PLC