The GE IS200TSVCH2A IS200TSVCH2AAA servo terminal board connects servo valve controls to Mark VI systems. This board provides analog output signals for hydraulic actuator positioning. You will find this terminal board in Speedtronic Mark VI turbine control cabinets. Its high-precision design ensures accurate steam valve positioning.
Servo Output Architecture
This servo terminal board provides eight analog output channels for valve control. Consequently, it positions multiple actuators from a single board. The GE IS200TSVCH2A IS200TSVCH2AAA generates ±10V signals for servo valve drivers. Moreover, each channel includes short circuit protection. You can connect standard servo valves without external amplifiers.
Technical Specifications
| Parameter | Value |
|---|---|
| Output Channels | 8, analog, single-ended |
| Output Voltage Range | ±10V DC |
| Resolution | 12-bit (4096 steps) |
| Output Current | 10 mA maximum per channel |
| Accuracy | ±0.1% of full scale |
| Settling Time | 1 ms to 0.1% |
| Output Impedance | 0.1 Ω |
| Dimensions | 230mm x 160mm x 25mm |
| Weight | 0.55 kg (1.21 lbs) |
| PCB Layers | 4 |
| Onboard Components | 8 DACs, 8 op-amps, 8 protection circuits |
| Connector Count | 3 (analog output, backplane, status) |
| Status Indicators | 8 LEDs (output active), 2 LEDs (power, fault) |
| Energy Storage | 470 µF (output filtering) |
| Isolation Voltage | 1500V (output to logic) |
| Output Protection | Short circuit, overvoltage |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Analog Output and Protection Features
The unit includes 12-bit DACs for precise voltage generation. Therefore, it provides smooth, accurate control of servo valves. This board replaces the IS200TSVCH2AAA version without any calibration changes. Simply remove the old board and install this one. GE designed this terminal board for single-slot installation. Hence, it fits directly into existing Mark VI rack positions.
Four PCB layers separate analog output traces from digital logic. Three connectors handle all output, backplane, and status signals. The GE IS200TSVCH2A IS200TSVCH2AAA includes short circuit protection on each output channel. Accordingly, it survives accidental wiring shorts without damage. Eight LEDs show output activity for every channel clearly.
Installation and Wiring Guide
You can connect servo valves using standard shielded twisted-pair cable. Keep cable lengths under 30 meters for best performance. The GE IS200TSVCH2A IS200TSVCH2AAA works with all GE Mark VI servo systems. Always use shielded cable for output wiring beyond 10 meters. Proper grounding of cable shields prevents noise coupling.
The board requires 24V DC power from the backplane. The outputs reference an internal precision voltage source. The GE IS200TSVCH2A IS200TSVCH2AAA delivers reliable servo control for turbine valves. Installation requires only a screwdriver for output connections. This board operates in non-condensing environments with adequate clearance.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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