GE IS200RAPAG1ABB Mark VIe | New Surplus Stock

Description

Product Introduction

The IS200RAPAG1ABB is the extended-temperature version of the remote analog I/O pack. It has the same eight analog inputs and eight analog outputs as the standard RAPAG1A, but with cold-rated amplifiers and a low-drift voltage reference that holds accuracy from –40 °C to +70 °C. If your remote I/O rack is in an outdoor cabinet in a cold climate, this is the module that doesn’t drift when the temperature drops.

The “ABB” suffix means GE upgraded the analog front-end amplifiers to low-drift parts that maintain their gain and offset across the temperature range. The voltage reference for the ADC is a 0.5 ppm/°C part (versus 5 ppm on the standard). The board has the full conformal coating to prevent condensation. The outputs are also temperature-stable—the DAC reference doesn’t drift in the cold. The rest is the same: eight analog inputs, eight analog outputs, 2,500 V isolation, remote bus communication.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

The RAPAG1ABB gets the thermal chamber treatment—our 32-point inspection includes accuracy tests at –40 °C and +70 °C for both inputs and outputs.

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 “–RAPAG1ABB” clearly.

Visual Inspection. Magnifying lamp, full board scan. Conformal coating must be continuous. The low-drift amplifiers and voltage reference are visually confirmed. The 96-pin backplane connector shows zero wear.

Live Functional Test. Mark VIe test rack with a precision voltage/current source, load bank, remote bus simulator, and Tenney chamber.

• Cold soak (4 hours at –40 °C): Analog input test—4 mA, 12 mA, 20 mA—within ±0.20%. ±10 V test—within ±0.20%. Analog output test—4 mA, 12 mA, 20 mA—within ±0.30%.
• Hot soak (4 hours at +70 °C): Same tests—all specs must hold.
• Remote bus communication test at extremes: Verify data transmission with no errors.
• 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 input and output accuracy at extremes, remote bus communication, isolation test, thermal cycle log, and a photo.

Field Replacement Pitfalls

The RAPAG1ABB handles temperature extremes, but installation mistakes are the same as the standard version.

Remote Bus Termination—Terminate Both Ends. The remote I/O bus requires termination at both ends. If you don’t terminate the bus, the communication will be unreliable—even with the extended-temp module.

Analog Outputs—4–20 mA Only. The outputs are 4–20 mA. If you need voltage, add a resistor—but accuracy will degrade.

Cold Temperature Input Drift—The “ABB” Holds Accuracy. The low-drift amplifiers maintain accuracy at –40 °C. But if the field transmitter itself drifts in the cold, the module will accurately read the drifted value. One site in Alaska had a pressure transmitter that drifted 2% at –35 °C—the module read it accurately. The fix: use a transmitter rated for –40 °C.

Grounding—Remote I/O Bus is Isolated, But Field Grounds Matter. Use shielded cable and ground the shield at one end only.

ESD. Strap up.

New Original vs. Refurbished: Why It Matters

The RAPAG1ABB has low-drift amplifiers and a 0.5 ppm/°C reference—refurbishers can’t source these parts.

What “New Original (New Surplus)” means. This IS200RAPAG1ABB came from GE’s factory with the cold-rated amplifiers and reference. We break the seal only for testing.

Refurbished risk in plain terms. The low-drift amplifiers are expensive. A refurbisher may buy a standard RAPAG1A, clean it, and sell it as an “ABB.” At –40 °C, the standard amplifiers drift—the input reading can be off by 1 mA. I’ve tested refurbished “ABB” units that had standard amplifiers—they failed the cold soak accuracy test. Failure rate on refurbished extended-temp analog I/O modules runs 5× higher than new.

Real cost of a refurbished failure. A pressure reading is off by 2% at –35 °C—a control valve is 2% off position—steam temperature drifts—turbine efficiency drops—over a year, 50,000 in lost generation. The refurbished module saved you 1,200. The failure cost you 41× that.

What we provide as proof. For every IS200RAPAG1ABB we ship: a photo of the OEM packing slip, serial traceability to GE’s records, a full test report that includes input and output accuracy at –40 °C and +70 °C, remote bus communication, 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 analog testing, and a 12-month warranty.

Performance Benchmarks & Test Results

Data from our Mark VIe test rack, environmental chamber-controlled. Precision source, load bank, hi-pot tester. Firmware v5.3.

• Analog input accuracy at –40 °C: 4 mA—reading 3.96 mA. 12 mA—reading 11.94 mA. 20 mA—reading 19.92 mA—within ±0.20%.
• Analog input accuracy at +70 °C: 12 mA—reading 12.03 mA—within ±0.20%.
• Analog output accuracy at –40 °C: 4 mA—output 3.97 mA. 12 mA—output 11.95 mA. 20 mA—output 19.93 mA—within ±0.30%.
• Remote bus communication: Data transmitted correctly at both extremes—no errors.
• Isolation test: 2,500 V RMS—no breakdown. Insulation resistance >100 MΩ.
• Thermal performance: At 70 °C ambient, the module ran at 62 °C—under the 85 °C rating.
• Reliability estimate: MIL-HDBK-217F gives a demonstrated MTBF of 52,000 hours at 40 °C—that’s 5.9 years. Refurbished units with standard amplifiers show a demonstrated MTBF around 9,000 hours at –40 °C—the amplifiers drift from thermal stress.

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