Description
- Model: IS200DTAIH1ABB
- Series: Mark VIe
- Function: Simplex Analog Input Termination
- Channels: 10 Analog Inputs
- Compatibility: Connects to the PAIC (Analog I/O) pack via 37-pin D-type connectors.
- Revision: H1ABB (High-reliability hardware revision)
Technical Specs
- Input Types: Supports 4-20 mA, ±10 V, and transmitter power.
- Protection: Integrated 24 V DC fuses for transmitter power loops.
- Isolation: Passive termination with high-frequency noise filtering.
- Diagnostics: ID chip for automatic identification by the Mark VIe controller.
Pre-Installation (Preparation: 15 minutes)
⚠️ Hazard Warning: These boards are part of a high-speed turbine control loop. A loose connection on a DTAI board can cause a “Loss of Signal” trip, leading to an immediate emergency shutdown.
- Back Up Configuration: Ensure the latest ToolboxST project is saved.
- ESD Safety: Use a grounded wrist strap. Mark VIe boards use advanced CMOS components sensitive to static.
Removal & Replacement
- Tagging: Mark every field wire with its corresponding terminal number (e.g., TB1-Pin 1).
- I/O Pack Removal: Gently unscrew and remove the I/O Pack (PAIC or PAOC) from the D-connector before unscrewing the board from the mounting plate.
- Terminal Check: Inspect terminal blocks for signs of vibration-induced wear or “creeping” (loosening).
GE IS200DTAIH1ABB IS210DTAOH1AA
GE IS200DTAIH1ABB IS210DTAOH1AA
GE IS200DTAIH1ABB IS210DTAOH1AA
Customer Use Case: Power Plant Reliability
A thermal power plant in Southeast Asia experienced intermittent “Analog Input Out of Range” alarms. Diagnostics pointed to a failing capacitor on the original IS200DTAIH1ABB board caused by high ambient temperatures in the control room. By replacing the board with a New Surplus unit, the plant eliminated the signal “noise” and prevented a nuisance trip during a high-demand period.
Frequently Asked Questions (FAQ)
Q: Can I use an IS200DTAIH1ABB to replace a DTAIH1A version? A: Yes. The “ABB” suffix denotes a later revision that is backward compatible. GE designs these boards to be “Drop-in” replacements for older H1A versions within the same functional group.
Q: Do I need to re-calibrate the I/O pack after replacing the termination board? A: Since these are passive termination boards, the calibration data is stored in the I/O pack (PAIC/PAOC). However, a Loop Check is mandatory to ensure the physical wiring and connections are accurate.
Q: Why choose New Surplus over “Used” for Mark VIe parts? A: Mark VIe systems are the “front line” of turbine safety. “Used” boards may have microscopic damage from previous field environments. New Surplus boards offer zero run-hours and pristine terminal blocks, ensuring the lowest possible resistance for sensitive analog signals.
