GE IS200VTURH2BAC VTUR VME‑Bus Turbine Protection Processor Board

Description

Hardware & Electrical Specifications

• Model：IS200VTURH2BAC
• Part Number：IS200VTURH2BAC
• Module Type：VTUR VME‑Bus Turbine Protection Processor Board
• Mounting：6U single‑slot VME rack backplane installation inside control cabinet
• Power supply：+5 VDC, ±12 VDC powered via VME backplane
• Speed input：4‑channel MPU magnetic pickup speed inputs for turbine shaft speed measurement
• Flame detector input：8‑channel Geiger‑Mueller flame detector inputs for gas‑turbine flame‑out monitoring
• Additional inputs：Synchronizing signal, shaft voltage and shaft current monitoring inputs
• Trip relay output：3 independent Form‑C dry‑contact trip relay outputs for emergency turbine trip circuit drive
• Interface：VME backplane bus connector; multi‑pin front‑panel cable connectors for TTUR / DTUR terminal board interconnection
• PCB treatment：BAC‑revision conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, MPU signal fault detection, flame‑detector fault diagnosis, watchdog self‑monitor circuit, trip‑relay contact feedback monitoring
• Compatibility note：Cannot run standalone; must match Mark VI TTUR / DTUR terminal boards; full protection‑loop simulation test mandatory after replacement.

Environmental Specifications

• Operating temperature：0 ℃ ~ +60 ℃
• Storage temperature：‑40 ℃ ~ +85 ℃
• Relative humidity：5%‑95% non‑condensing
• Installation location：Indoor turbine control cabinet
• EMC compliance：IEC 61000‑6‑2
• Certifications：CE, UL508

Mechanical Data

• Weight：approx 0.42 kg
• Dimension：280 mm × 160 mm × 25 mm
• Handling note：ESD‑sensitive PCB; high‑speed safety protection logic circuit, anti‑static wrist‑strap mandatory during handling
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Receive turbine speed pulse signals, flame‑detector signals, shaft voltage/current and synchronizing signals from TTUR field terminal board.
2. Complete speed frequency‑to‑value conversion, flame‑condition judgment, execute independent overspeed protection and flame‑loss trip logic.
3. Drive on‑board Form‑C trip relays to output emergency turbine‑trip commands to trip solenoid circuits.
4. Upload speed value, flame status and protection alarm data to main controller via VME bus.
5. Channel‑level self‑diagnosis: detect MPU open‑circuit / short‑circuit, flame‑detector failure, trip‑relay contact anomaly, VME‑bus communication abnormality, watchdog timeout; upload fault alarm to turbine main controller.
6. LED status indication:
   • Green LED：Board power supply normal
   • Yellow LED：VME‑bus communication active
   • Red LED：Protection‑channel fault / module failure 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. Insert board into designated VME slot, secure panel locking screws; ensure all multi‑pin cable connectors fully locked without loose contact.
3. Field sensor wiring strictly follow GE Speedtronic Mark VI wiring manual; MPU and flame‑detector signal cables 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 VME rack power status, check speed reading and flame‑signal status, simulate overspeed and flame‑loss protection trigger condition before commissioning.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency of related VTUR boards shall be verified; full protection‑loop simulation test mandatory before unit put‑into‑service.