Product Overview
This trip emergency board delivers hardware-based overspeed protection for rotating machinery. You can install GE IS200TREGH5B IS200TREGH5BDC directly into standard Mark VIe rack slots. The unit monitors up to three independent speed signals from magnetic pickups. It triggers a fuel cutoff immediately when detecting dangerous overspeed conditions.
Technical Specifications
| Parameter | Value |
|---|---|
| Dimensions (W x H x D) | 210 mm x 110 mm x 30 mm |
| Weight | 0.46 kg |
| Number of speed inputs | 3 magnetic pickup channels |
| Input connector type | Coaxial BNC connectors (3) |
| Interface to controller | VME64 backplane connector |
| Output relay type | Two form-A (SPST) safety relays |
| Relay contact rating | 250V AC at 3A, 30V DC at 5A |
| Total onboard components | 135 discrete parts |
| Energy storage type | Polyester film capacitors |
| Energy storage rating | 330 µF at 63V DC |
| Response time | <12 ms from fault to trip activation |
| Operating temperature | -25°C to +70°C |
Board Layout and Components
The PCB dedicates independent comparator circuits for each speed channel. Three separate frequency counters verify rotational speed simultaneously. Additionally, 135 discrete components provide signal conditioning and voting logic. Two redundant safety relays control the fuel shutoff valve directly. Consequently, the system remains operational even if one relay fails.
Installation Process
You can mount GE IS200TREGH5B IS200TREGH5BDC securely into any Mark VIe rack slot. The three BNC connectors accept standard RG58 coax cables from speed sensors. Furthermore, screw terminal blocks connect to the trip valve solenoids. Clearly labeled jumpers allow you to configure trip thresholds easily.
Performance Advantages
This board reacts to overspeed events within 12 milliseconds typically. Each speed channel operates completely independent of the main processor. Therefore, a CPU failure cannot block the trip function. The 2oo3 voting scheme also prevents nuisance trips from single sensor noise.
Safety and Compliance
GE IS200TREGH5B IS200TREGH5BDC complies with IEC 61508 SIL 2 requirements. The board discharges stored energy below 4V within four seconds of power-down. Hence, technicians encounter no significant electrical hazards during field repairs or replacements.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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