GE IS200TREAH2AED TREA Emergency Trip Terminal Board,

Description

Hardware & Electrical Specifications

• Model：IS200TREAH2AED
• Part Number：IS200TREAH2AED
• Module Type：TREA Emergency Trip Terminal Board
• Mounting：Cabinet panel mounting inside turbine control cabinet
• Power supply：+24 VDC auxiliary power supplied by PPRO I/O packs
• Input channels：Multi‑channel discrete contact inputs; support dry‑contact / 24‑125 VDC wet‑contact; multi‑channel MPU magnetic‑pickup pulse inputs for overspeed detection
• Output channels：Hardware trip relay outputs for emergency trip circuit drive
• Isolation：Group‑based galvanic isolation, isolation rating 1500 V DC
• Trip response time：Hardware trip action within 5 ms for safety protection signals
• Interface：Removable barrier‑type screw terminal blocks for field wiring; multiple multi‑pin IDC ribbon‑cable connectors for PPRO I/O pack interconnection
• PCB treatment：Conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, transient absorption circuit for safety‑signal loops
• Compatibility note：Cannot run standalone; must match Mark VIe PPRO protection I/O pack; TMR system requires three identical TREA boards; full emergency‑trip simulation test mandatory after replacement.

Environmental Specifications

• Operating temperature：‑30 ℃ ~ +65 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Indoor turbine control cabinet
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE

Mechanical Data

• Weight：approx 1.40 kg
• Dimension：330 mm × 178 mm × 55 mm
• Handling note：ESD‑sensitive PCB; safety‑critical overspeed‑detection circuit, anti‑static wrist‑strap mandatory during handling
• Recommended wire cross‑section：0.75‑2.5 mm² shielded twisted‑pair copper cable for field safety‑signal wiring
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Removable barrier screw‑terminal field termination for turbine critical safety signals: MPU overspeed pulse signals, ESD emergency‑shutdown contacts, low‑oil‑pressure trip, high‑vibration trip and other hard‑wired protection contact signals.
2. Group galvanic isolation between plant field wiring and control logic side, suppress ground‑loop noise and industrial surge interference in turbine‑hall environment.
3. Condition speed pulse and discrete trip signals, transmit to three PPRO I/O packs via multi‑ribbon‑cable interface; realize hardware‑level 2‑out‑of‑3 voting logic and drive trip relay outputs for turbine emergency shutdown.
4. On‑board channel fault diagnosis: detect MPU sensor open‑circuit / short‑circuit, field‑loop abnormal fault, report fault status to main controller.
5. On‑board self‑diagnosis: detect auxiliary power loss and ribbon‑cable link failure.
6. LED status indication:
   • Green LED：Terminal‑board auxiliary power normal
   • Yellow LED：Ribbon‑cable link communication active
   • Red LED：Field‑channel fault / overspeed condition / trip‑active / link communication loss alarm

Installation & Wiring Requirements

1. Cut off rack power supply before replacement. Hot‑swap is forbidden. Strict anti‑static protection when handling PCB board.
2. Secure panel mounting firmly; ensure all multi‑pin IDC ribbon‑cable connectors fully locked without loose contact.
3. Field safety‑signal wiring strictly follow GE Speedtronic Mark VIe wiring manual; safety‑related signal cables must adopt shielded twisted‑pair, strictly separated from high‑power cables; connect shielding to dedicated ground terminal.
4. Complete protective grounding according to GE Speedtronic system specification.
5. After replacement: verify ribbon‑cable link status, check MPU pulse signal quality, simulate all emergency‑trip input conditions, validate hardware trip‑action response before commissioning.
6. Replacement note: For TMR triple‑redundant safety‑loop application, three‑set TREA hardware consistency must be verified; full emergency‑protection‑loop simulation test mandatory after swap.