GE IS200VVIBH1CAC VVIB VME‑Bus Vibration Input Processor Board

Description

Hardware & Electrical Specifications

• Model：IS200VVIBH1CAC
• Part Number：IS200VVIBH1CAC
• Module Type：VVIB VME‑Bus Vibration Input Processor Board
• Mounting：6U single‑slot VME rack backplane installation inside control cabinet
• Power supply：+5 VDC, ±12 VDC powered via VME backplane; typical power consumption 8.5 W
• Input channels：14 multi‑function input channels; support proximity probe (Bently‑type), seismic transducer, key‑phase signal input
• ADC resolution：16‑bit high‑resolution analog‑to‑digital conversion; built‑in real‑time FFT spectrum analysis function
• Channel isolation：2500 V channel‑to‑channel isolation
• Interface：VME backplane bus connector; multi‑pin front‑panel cable connectors for TVIB / DVIB terminal board interconnection
• PCB treatment：CAC‑revision conformal coated for dust‑moisture‑corrosion resistance
• On‑board protection：ESD protection, MOV surge suppression, probe open‑circuit / short‑circuit fault detection, signal over‑range monitoring, watchdog self‑monitor circuit
• Compatibility note：Cannot run standalone; must match Mark VI TVIB or DVIB terminal boards; full vibration‑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

Mechanical Data

• Weight：approx 0.60 kg
• Dimension：280 mm × 160 mm × 25 mm
• Handling note：ESD‑sensitive PCB; high‑precision weak‑signal vibration measurement circuit, anti‑static wrist‑strap mandatory during handling
• Terminal tightening torque：0.6‑1.0 N·m

Main Functions

1. Receive proximity probe, seismic vibration and key‑phase pulse signals transmitted from TVIB field terminal board.
2. Complete signal conditioning, high‑speed sampling and FFT spectrum calculation, output vibration amplitude, shaft displacement, differential expansion and eccentricity engineering values.
3. Provide vibration alarm and trip trigger source for turbine protection logic; store vibration trend and spectrum data for predictive maintenance diagnosis.
4. Channel‑level self‑diagnosis: detect probe open‑circuit, short‑circuit, signal over‑range; mark faulty channel without interfering with other measurement channels.
5. On‑board self‑diagnosis: detect VME‑bus communication abnormality, watchdog timeout, internal reference drift; 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：Vibration‑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 vibration probe wiring strictly follow GE Speedtronic Mark VI wiring manual; proximity probe signal cables adopt high‑quality 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 each‑channel vibration / displacement reading, simulate probe open‑short fault condition before commissioning.
6. Replacement note: For TMR triple‑redundant system application, hardware consistency of related VVIB boards shall be verified; full vibration‑loop simulation test mandatory before unit put‑into‑service.