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SPECIFICATIONS:
Part Number: IS210DSVOH1B
Manufacturer: General Electric
Series: Mark VI
Number of Inputs: 6
Number of Outputs: 2
Product Type: Simplex Servo Input/Output Terminal Board
Secondary Ethernet Interface: 10BaseT/100BaseTX
Pulse Rate Input: 2 Hz
Voltage Range: 14 to 32 V dc
Maximum Lead Resistance: 15 Ohms
Operating temperature: 0 to 70� C
Technology: Surface mount
Size: 23.8 cm high x 8.6 cm
Repair: 3-7 Days
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6421M
FUNCTIONAL DESCRIPTION:
IS210DSVOH1B is a Simplex Servo Input/Output Terminal Board manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Gas Control Systems. The Simplex Servo Input/Output (DSVOH1B) terminal board is a compact terminal board designed for DIN-rail mounting. This board has two servo outputs, I/O for six LVDT position sensors, and two active pulse rate inputs for flow measurement. Servo coil currents ranging from 10 to 120 mA can be selected using jumpers. DSVOH1B connects to the VSVO processor board with a 37-pin cable, which is identical to those used on the larger TSVO board. The terminal boards can be stacked vertically on the DIN rail to conserve cabinet space. Two DSVOH1B boards can be connected to the VSVO if required. Only a simplex version of this board is available.
The on-board functions and high-frequency decoupling to ground are the same as those on the TSVO. High-density Euro-Block type terminal blocks are permanently mounted to the board with six screws for the ground connection (SCOM). Connectors JR1 and J5 connect to signals from onboard ID chips that identify the board to the VSVO for system diagnostic purposes. Two versions of the DSVO, H1B, and H2B are available. The H1B is a direct replacement for the previous H1A design. The H2B is certified by UL for Class 1 Division 2 applications.
INSTALLATION:
Mount the plastic holder on the DIN rail and slide the DSVOH1B board into place. Connect the wires for the servo I/O directly to the terminal block. The Euro-Block type terminal block has 36 terminals (DSVOH1A) or 42 terminals (DSVOH1B, H2B) and is permanently mounted on the terminal board. Typically, #18 AWG shielded twisted pair wiring is used. Six screws, 31-36, are provided for the SCOM connection, which should be as short a distance as possible.
OPERATION:
The input operations of the terminal board include receiving signals from various sensors, encoders, and external switches. Feedback from encoders allows the system to monitor motor position and speed, ensuring accurate movement. The board also processes control inputs, such as start, stop, direction, and speed commands, which determine how the servo motor operates. Additionally, safety signals, including emergency stop (E-Stop) inputs, are handled by the board to immediately halt operations in case of a fault or hazardous condition.
DIAGNOSTICS:
If the regulator feedback (LVDT) signal is out of limits, a fault is created, and if the associated regulator has two sensors, the bad sensor is removed from the feedback calculation, and the good sensor is used.
If any one of the above signals goes unhealthy, a composite diagnostic alarm, L#DIAG_VSVO, occurs. Details of the individual diagnostics are available from the toolbox. The diagnostic signals can be individually latched and reset with the RESET_DIA signal if they are healthy.
Connector JR1 on the terminal board has its own ID device that is interrogated by the I/O board. The ID device is a read-only chip coded with the terminal board serial number, board type, revision number, and the connector location. When the chip is read by VSVO and a mismatch is encountered, a hardware incompatibility fault is created.
WHY PURCHASE IS210DSVOH1B FROM WOC?
WOC is a trusted global supplier known for its extensive inventory of genuine GE Speedtronic Gas Turbine Control System parts, ensuring fast availability when operations are at stake. Our team of certified engineers provides quick and reliable repairs, typically completed within 3-7 days, while maintaining strict OEM-level quality standards across all components. We offer competitive pricing on new, unused, surplus, and refurbished parts, along with comprehensive warranties for added peace of mind. With worldwide shipping capabilities and 24/7 technical support, WOC delivers the expertise, reliability, and responsiveness that industries depend on to keep their systems running smoothly.
What is a Simplex Servo Input/Output Terminal Board?
A Simplex Servo Input/Output Terminal Board is an interface module used in GE Speedtronic Mark VI systems to connect servo drives and field devices. It routes control commands from the processor to actuators and receives feedback signals from sensors. The board helps manage I/O signals efficiently while maintaining system reliability. It is designed for compact DIN-rail mounting in control cabinets.
What signals does this board support?
This board supports servo output signals, LVDT position sensor inputs, pulse-rate inputs, and general control I/O signals. It is used for precise motion control and feedback monitoring in turbine systems. The board can process start/stop commands, speed references, and safety signals such as E-Stop. It also provides signal conditioning and isolation for accurate operation.
How does the board connect to the control system?
The terminal board connects to the VSVO processor using a standard multi-pin cable, typically a 37-pin connector. This connection enables communication of servo commands and feedback data between the processor and the field devices. The board is designed to integrate seamlessly with GE Mark VI control architectures. It supports diagnostic monitoring through the processor interface.
What is the difference between Simplex and Duplex boards?
Simplex boards operate as a single channel and do not provide redundancy. Duplex boards have dual channels for redundant operation, improving system availability and fault tolerance. Simplex is used where redundancy is not required or is handled elsewhere in the system. Duplex systems are typically preferred for critical applications where downtime must be minimized.
