Configured for turbine emergency‑trip execution in Mark VI platforms, the GE IS200TREGH1B (IS200TREGH1B termination board) provides direct relay‑based voting, solenoid power routing, and positive‑side trip‑circuit distribution for three emergency trip solenoids.
Hardware Specifications
Parameter
Specification
Model
IS200TREGH1B
Brand
GE
Origin
USA
Weight
2.00 lbs
Dimensions
17.8 cm × 33.02 cm
Operating Temp
0 to 70 deg C
Power Consumption
Not specified
Core Performance Indicators
6 channels; 3 trip solenoids; 200–250 V AC supply; 70–145 V DC bus; relay‑based trip voting; Mark VI compatibility
Profinet / EtherNet/IP Deterministic Networks
Within GE’s Mark VI control architecture, the TREG board aligns with deterministic backplane timing used for emergency‑trip signaling. Although the board is passive, its relay‑voting paths maintain predictable propagation delays required for overspeed and emergency‑stop execution. I/O density scaling is supported through coordinated operation with TRPG and PPRO modules. Firmware flash compatibility resides at the controller level; TREG provides fixed electrical behavior without programmable logic.
Frequently Asked Questions
Q: Can the TREG board be hot‑swapped while energized? A: No. Terminal boards must be inserted or removed only when the associated rack segment is de‑energized to avoid transient loading on trip‑relay circuits.
Q: How are the three trip solenoids powered? A: TREG supplies the positive side of the solenoid DC power, while TRPG supplies the negative side. Relay groups vote trip commands to each solenoid.
Q: Does the board support redundant trip configurations? A: Yes. TREG supports simplex, dual, and triple‑redundant Mark VI systems when paired with appropriate I/O controllers and TRPG boards.
Field Installation Guidelines
Wire the first terminal block directly to trip solenoids, economizing resistors, and emergency‑stop circuits.
Use the second terminal block for up to seven trip interlocks, ensuring correct polarity and isolation.
Maintain shield bonding at a single termination point to reduce noise on trip‑relay circuits.
Verify JX1, JY1, and JZ1 connector seating; diode‑combined control power relies on full engagement.
Route solenoid wiring separately from high‑current turbine actuators to avoid impedance coupling.
Follow GEH‑6421 installation practices for grounding, cabinet bonding, and relay‑group verification.
