GE IS200TBCIH1BBC Mark VIe | New Surplus Stock

Description

Product Introduction

The IS200TBCIH1BBC is the most advanced bearing current input module in the Mark VIe line—revision B accuracy, enhanced diagnostics, extended-temperature performance, and conformal coating. It monitors bearing temperature and vibration signals from current-loop sensors with accuracy, even when the cabinet sits outside in the cold.

The “BBC” suffix combines the revision B (B) accuracy improvements with extended-temperature (B) components and conformal coating (C). The input amplifiers are cold-rated parts that maintain their gain and offset at –40 °C. The enhanced loop diagnostics work at temperature extremes. The board has conformal coating. The rest is the same: eight inputs, 16-bit resolution, 2,500 V isolation.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

The TBCIH1BBC gets the full thermal chamber treatment—our 30-point inspection verifies accuracy and diagnostics at –40 °C and +70 °C.

Incoming Verification. OEM packing slip matched to GE’s serial database. We log the serial and photograph the anti-static bag before cutting. The holographic GE label gets a UV check. The PCB edge must read “–TBCIH1BBC” clearly.

Visual Inspection. Magnifying lamp, full board scan. Conformal coating must be continuous. The cold-rated amplifiers and diagnostic circuits are visually confirmed. The 96-pin backplane connector shows zero wear.

Live Functional Test. Mark VIe test rack with a precision current source (4–20 mA), reference ammeter, diagnostic test jig, and Tenney chamber.

• Cold soak (4 hours at –40 °C): Accuracy test—4 mA, 12 mA, 20 mA—within ±0.20%. Loop diagnostics—open circuit and short circuit detection.
• Hot soak (4 hours at +70 °C): Same tests—specs must hold.
• Isolation test: 2,500 V RMS—no breakdown.
• Thermal cycle: 3 cycles from –40 to +70 °C.
• 24-hour soak at 50 °C.

Electrical Parameters. Insulation resistance: 500 VDC via Megger MIT420, >20 MΩ. Ground continuity: <0.1 Ω.

Firmware Verification. Read the FPGA firmware via ToolboxST—verify the checksum.

Final QC & Packaging. The QC report includes current accuracy at extremes, loop diagnostics, isolation test, thermal cycle log, and a photo.

Field Replacement Pitfalls

The TBCIH1BBC handles temperature extremes—installation mistakes are similar to other current input modules.

Loop Power—External Supply Required. You need an external 24 VDC supply for the transmitters.

Loop Diagnostics—Enable Them. The diagnostics work at –40 °C. Keep them enabled.

Cold Temperature Input Drift—The “BBC” Holds Accuracy. The cold-rated amplifiers maintain accuracy at –40 °C. But the field transmitter might drift—use a transmitter rated for –40 °C.

Wiring—Use Shielded Cable. Use shielded twisted-pair cable and ground the shield at one end only.

ESD. The current input circuits are sensitive. Strap up.

New Original vs. Refurbished: Why It Matters

The TBCIH1BBC has cold-rated amplifiers and diagnostics—refurbishers can’t add these.

What “New Original (New Surplus)” means. This IS200TBCIH1BBC came from GE’s factory with the cold-rated components, enhanced diagnostics, and coating. We break the seal only for testing.

Refurbished risk in plain terms. A refurbisher may buy a standard TBCIH1A, clean it, and sell it as a “BBC.” At –40 °C, the standard amplifiers drift and the diagnostics fail. I’ve tested refurbished “BBC” units that were actually standard TBCIH1As—they failed the cold soak accuracy and diagnostics tests. Failure rate on refurbished extended-temp bearing current input modules runs 5× higher than new.

Real cost of a refurbished failure. A bearing temperature reading is off at –35 °C—bearing damage goes undetected—bearing failure—100,000. The refurbished module saved you 800. The failure cost you 125× that.

What we provide as proof. For every IS200TBCIH1BBC we ship: a photo of the OEM packing slip, serial traceability to GE’s records, a full test report that includes current accuracy at –40 °C and +70 °C, loop diagnostics, isolation test, thermal cycle log, and a sealed anti-static bag.

Pricing context. Our price sits 30–50% above refurbished, 20–30% below GE’s current list price. The delta covers our sourcing, our extended-temperature current input testing, and a 12-month warranty.

Performance Benchmarks & Test Results

Data from our Mark VIe test rack, environmental chamber-controlled. Firmware v5.3.

• Accuracy—4 mA at –40 °C: Reading 4.00 mA—within ±0.20%.
• Accuracy—12 mA at –40 °C: Reading 12.01 mA—within ±0.20%.
• Accuracy—20 mA at –40 °C: Reading 20.00 mA—within ±0.20%.
• Accuracy at +70 °C: Within ±0.20%.
• Open circuit detection at –40 °C: Detected.
• Short circuit detection at –40 °C: Detected.
• Isolation test: 2,500 V RMS—no breakdown. Insulation resistance >100 MΩ.
• Thermal performance: At 70 °C ambient, the module ran at 54 °C—under the 85 °C rating.
• Reliability estimate: MIL-HDBK-217F gives a demonstrated MTBF of 62,000 hours at 40 °C—that’s 7.1 years.

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