Core Function of This Emergency Trip Board
The GE IS200TREAH1ACC manages the turbine overspeed protection logic directly. This terminal board receives three independent speed sensor inputs. It compares each signal against a user-defined overspeed setpoint. Consequently, the board triggers a rapid trip when any sensor detects dangerous conditions.
Physical Dimensions and Board Layout
This terminal board measures 310 mm in total length. Its width reaches 235 mm for a full-size PCB form factor. The board thickness stands at 22 mm including connector heights. You will find 287 discrete components on this fiberglass substrate. These include relays, optocouplers, and precision resistors. The GE IS200TREAH1ACC weighs approximately 560 grams for sturdy mounting.
Input Channels and Sensor Interfaces
This board accepts three magnetic pickup or proximity probe inputs. Each input channel includes a dedicated signal conditioning circuit. Furthermore, the board provides three separate threshold comparators. These comparators trip at 110% of nominal turbine speed. The module also includes one manual reset push button for latching faults.
Trip Relay Outputs and Energy Storage
The GE IS200TREAH1ACC features two independent trip relay outputs. Each relay contacts rated at 250 V AC or 30 V DC. The contact current capacity reaches 5 A for resistive loads. The board incorporates six 100 µF capacitors for power supply filtering. However, these capacitors do not store trip history or configuration data. Total stored energy remains below 0.15 joules at nominal voltage.
Connector Types and Wiring Details
A single 64-pin DIN 41612 connector links to the main Mark VIe controller. Additionally, three 6-pin terminal blocks accept field sensor wiring. Each terminal accepts wire gauges from 0.5 to 2.5 mm². The board also provides one 10-pin header for auxiliary trip signals. Gold-plated contacts ensure reliable connections in harsh environments.
Component Count and Environmental Data
| Parameter | Specification |
|---|---|
| Model | IS200TREAH1ACC |
| Brand | GE (General Electric) |
| Category | Turbine Emergency Trip Terminal Board |
| Length x Width | 310 x 235 mm |
| Thickness | 22 mm |
| Weight | 560 grams |
| Component Count | 287 |
| Speed sensor inputs | 3 (magnetic or proximity) |
| Trip relay outputs | 2 (5A, 250V AC / 30V DC) |
| Filter capacitors | 6 x 100 µF |
| Total stored energy | 0.15 Joules |
| Main connector | DIN 41612, 64-pin |
| Wire gauge range | 0.5 to 2.5 mm² |
| Operating temperature | -20°C to +60°C |
Installation and Safety Notes
You must mount this board in a dedicated Mark VIe trip chassis slot. Always connect each speed sensor using shielded twisted-pair cable. Then, verify that the manual reset button returns to its normal position. The board meets SIL 3 requirements for emergency shutdown functions. Regular testing of both trip relays ensures continued system integrity.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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