Description
1. At-A-Glance Executive Brief
- Model: IS200TBAIH1BBB
- Brand: General Electric (GE)
- Part Type: Mark VI Analog Input Terminal Board
- Lifecycle Status: Legacy / Obsolete
- Weight: Approx. 1.2 lbs (0.54 kg)
- System Compatibility: GE Mark VI / Mark VIe Distributed Control Systems
2. Technical Introduction
Field technicians often struggle with signal drift and intermittent contact resistance when aging terminal blocks in the Mark VI cabinet reach the end of their service life. When analog inputs begin reporting erratic values or failing to register a 4-20mA loop, the terminal board often harbors the fault rather than the I/O card itself.
The IS200TBAIH1BBB serves as the primary termination point for analog input signals within the Mark VI architecture. This board bridges external field wiring to the I/O processor, providing necessary filtering and signal conditioning for sensitive process measurements. Replacing a degraded terminal board restores signal integrity and prevents the high-cost labor of troubleshooting phantom wiring faults in the terminal cabinet.
- Best Suited For: Restoring stable signal paths in GE Mark VI analog input loops.
- Best Suited For: Replacing boards suffering from terminal screw fatigue or oxidation.
- Best Suited For: Maintaining legacy Mark VI turbine control system availability.
3. Core Technical Specifications
- Product Series: GE Mark VI
- Terminal Type: Analog Input (TBAI)
- Board Revision: H1BBB
- Mounting: DIN-rail or Cabinet mounting
- I/O Capacity: Compatible with standard Mark VI Analog Input I/O packs
- Environmental Tolerance: Refer to the OEM datasheet for complete environmental tolerances.
4. Field Engineer’s Tech Notes
- Wiring Identification: Before disconnecting the old board, ensure every lead is clearly tagged with wire markers. The density of termination points on the TBAIH1B makes it easy to inadvertently swap adjacent analog channels during a hot-swap or board replacement, which can lead to hazardous control loops if logic mapping isn’t verified post-install.
- Screw Torque: These terminals are prone to failure if over-torqued during initial installation. When landing new field wires, use a calibrated torque driver to manufacturer specifications; loose terminals will cause vibration-induced signal noise that is notoriously difficult to isolate during startup.
5. Adaptive QA & Testing Protocol
Our testing protocol for the IS200TBAIH1BBB focuses on continuity and signal isolation integrity. We perform a point-to-point resistance check on all analog input terminals to ensure no internal traces have failed or developed high-resistance shorts. Furthermore, we conduct a dielectric strength test to verify that the isolation between channels meets the original GE factory specifications. We maintain photographic documentation of the board traces and terminal integrity, which we provide upon request to ensure transparency before shipping.
6. Buyer’s FAQ
- Is this board a direct replacement for older revision A or B boards? Yes, the H1BBB is typically compatible with previous iterations, but always verify the hardware revision requirements listed in your specific control system’s BOM.
- What is the typical lead time for this legacy part? We maintain inventory for immediate dispatch. If your plant is currently down, contact our emergency desk for same-day logistics options.
- Are these terminal boards refurbished? We stock New Surplus (NSFP) units in their original OEM packaging as well as inspected, bench-tested refurbishments. The condition is clearly marked on your quote.
- Do you provide a warranty on discontinued Mark VI components? Every board ships with our standard 1-year operational warranty, ensuring the hardware performs to specification once installed in your cabinet.
