IS230TSVBH3A - Servo I/O Terminal Board

IS230TSVBH3A - Servo I/O Terminal Board IS230TSVBH3A - Servo I/O Terminal Board

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Part Number: IS230TSVBH3A
Manufacturer: General Electric
Series: Mark VIe
Product Type: Servo I/O Terminal Board
Number of inputs: 8
Number of outputs: 2
Maximum operating voltage: 250 V rms
Maximum off-state leakage: 3mA rms
Power supply voltage: 24 V dc
Voltage Range: 14 to 32 V dc
Max response time on 1ms
Mounting: DIN-rail mounting
Technology: Surface mount
Operating temperature: -30 to 65°C
Size: 33.02 cm high x 17.8 cm
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721 G


IS230TSVBH3A is a Servo I/O Terminal Board manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Gas Turbine Control Systems. The Servo Input/Output (TSVB) terminal board interfaces two electro-hydraulic servo valves that actuate the steam/fuel valves. Valve position is measured with linear variable differential transformers (LVDT). TSVB is designed specially for the PSVO I/O pack and the WSVO servo driver, and will not work with the VSVO processor. The terminal board supports simplex, dual, and TMR control. Three 28 V DC supplies come in through plug J28. Plugs JD1 or JD2 are for an external trip from the protection module.


Sensors and servo valves are wired directly to two I/O terminal blocks. Each block is held down with two screws and has 24 terminals accepting up to 12 AWG wiring. A shield terminal strip attached to the chassis ground is located immediately to the left of each terminal block. External trip wiring is plugged into either JD1 or JD2. Each servo output can have three coils in TMR configuration. The size of each coil current is jumper selected using JP1, 3, 5 for Servo 1, and JP2, 4, 6 for servo 2. Three 28 V dc power supplies for the R, S, and T board functions are connected to J28. Two non-isolated LVDT excitation sources for S and T are wired to terminal blocks TB3 and TB4.


The TSVC servo terminal board provides two channels consisting of bi-directional servo current outputs, LVDT position feedback, LVDT excitation, and pulse rate flow inputs. It provides excitation for and accepts inputs from, up to eight LVDT valve position inputs. There is a choice of one, two, three, or four LVDTs for each servo control loop. The two pulse rate inputs are used for gas turbine fuel flow measurement. Each servo output is equipped with an individual suicide relay under firmware control that shorts the PSVO output signal to signal common when de-energized and recovers to nominal limits after a manual reset command is issued. Diagnostics monitor the output status of each servo voltage, current, and suicide relay.

WOC has the largest stock of GE Distributed Gas Turbine Control System Replacement Parts. We can also repair your faulty boards. WORLD OF CONTROLS can also supply unused and rebuilt backed-up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on any parts and repairs, kindly get in touch with our team by phone or email.


What is a Servo I/O Terminal Board?

A Servo I/O Terminal Board is a hardware device used for interfacing servo motors with a microcontroller or any other control system. It typically provides terminals or connectors for connecting servo motors, as well as input/output pins for communication with the controlling device.

How does a Servo I/O Terminal Board work?

The Servo I/O Terminal Board typically receives commands or signals from the controlling device, such as a microcontroller, via input/output pins. It interprets these signals and controls the servo motors accordingly by generating appropriate PWM (Pulse Width Modulation) signals.

What types of servo motors are compatible with a Servo I/O Terminal Board?

Servo I/O Terminal Boards are usually compatible with standard servo motors that operate based on PWM signals. These include hobby servos commonly used in robotics, RC vehicles, and other motion control applications.