GE Fanuc IS200TVIBH2BBB Vibration Terminal Board

Description

The GE Fanuc IS200TVIBH2BBB, also cataloged as the IS200TVIBH2B vibration terminal board, serves as the primary terminal interface for routing proximity, velocity, acceleration, seismic, and phase probe signals into the Mark VI vibration monitoring chain. The board provides fixed wiring points for up to fourteen Bently Nevada‑type probes and transfers conditioned analog signals toward the VVIB vector board for digitization and VME‑bus delivery.

Suffix Breakdown & Model Matrix

• The IS200TVIBH2BBB identifier does not include decomposable functional suffix elements.

• No variant matrix is defined in the provided documentation.

• The part number is treated as a fixed Mark VI vibration terminal board designation.

Hardware Specifications

• Part Number: IS200TVIBH2BBB

• Brand: GE Fanuc

• Series: Mark VI

• Product Type: Vibration Terminal Board

• Country of Manufacture: United States

• Size: 23.8 cm high x 8.6 cm wide

• Operating Temperature: -30 deg C to +65 deg C

• Probe Capacity: Up to 14 vibration probes

• Probe Types: Proximity, velocity, acceleration, seismic, phase

• Power Source: -28 VDC supplied from VVIB

• Redundancy Mode: Simplex or TMR (via diode high‑select circuit)

• Signal Routing: Analog probe signals to VVIB for A/D conversion

• Availability: In stock

Eddy‑Current Probe Scaling & Gap Voltage Validation

• The TVIB supports Bently Nevada‑style eddy‑current probe wiring, maintaining stable gap‑voltage behavior for displacement measurement.

• Gap voltage validation follows the industry‑standard negative‑bias target (approximately ‑10 VDC), ensuring correct proximitor excitation and linear displacement response.

• Internal routing minimizes cross‑talk between adjacent probe channels, preserving rotor‑dynamic signal integrity during high‑speed sampling.

• Channel grouping supports consistent scaling factors when interfacing with VVIB digitizers, maintaining predictable displacement, velocity, and acceleration conversion paths.

Functional Description

• Provides termination points for up to fourteen vibration probes used in turbine and rotating‑machinery monitoring.

• Two probe channels may be routed to the VVIB for vector processing and high‑speed digitization.

• Supports continuous monitoring through permanent cabling and predictive maintenance through BNC connectors for portable data collectors.

• Receives -28 VDC proximitor power from VVIB, with TMR systems using a diode high‑select circuit for redundancy.

• Regulators on the board provide individual excitation sources between -23 and -26 VDC with short‑circuit protection.

• Probe signals undergo A/D conversion on the VVIB and are transmitted over the VME bus to the controller.

• Alarm and trip logic for vibration, eccentricity, and axial position is generated in the controller based on digitized data.

• High‑speed sampling ensures real‑time detection of abnormal vibration patterns.

Frequently Asked Questions (FAQ)

• Q: Does the TVIB board provide its own proximitor power? A: No. Proximitor power is supplied from the VVIB board, which provides -28 VDC and manages redundancy through a diode high‑select circuit.

• Q: Can portable vibration analyzers be connected directly? A: Yes. BNC connectors allow portable analyzers to be attached for field diagnostics and predictive maintenance.

• Q: Are all probe types supported without additional conditioning hardware? A: Yes. The TVIB accepts proximity, velocity, acceleration, seismic, and phase probes, with conditioning and digitization performed on the VVIB.

Field Installation Guidelines

• Maintain ESD protection when handling the board; probe‑interface circuits are sensitive to static discharge.

• Ensure all probe shields are bonded at a single grounding point to prevent ground‑loop interference.

• Route probe cables separately from high‑voltage wiring to avoid induced noise in displacement and velocity channels.

• Verify -28 VDC supply integrity from VVIB before commissioning.

• Confirm correct polarity and wiring orientation for proximity probes to maintain proper gap‑voltage behavior.

• Use strain relief on all probe cables to prevent connector fatigue during turbine vibration.