The DS200CDBAG1BBB Contactor Driver Board Assembly is a highly specific and robust printed circuit board (PCB) manufactured by General Electric (GE). It is a key component within their industrial control systems, particularly the Mark V Speedtronic Turbine Control System and also used in AC/DC2000 Adjustable Speed Drives.

Product Description

The DS200CDBAG1BBB, functionally abbreviated as CDBA, is a Contactor Driver Board Assembly. Its primary role is to provide precise and powerful control signals to operate high-speed contactors. These contactors are electromechanical switches that rapidly connect or disconnect power to critical equipment, such as large motors or auxiliary systems. The board is instrumental in implementing "quick dropout protection," a vital safety feature that quickly de-energizes circuits during faults or emergency shutdowns.

The "BBB" in the part number signifies a highly revised version (Artwork B, Functional Revision B, Functional Revision B) compared to earlier "A" or single "B" versions. This indicates that it has undergone multiple internal improvements, bug fixes, and potentially enhanced compatibility or performance optimizations, while maintaining its core function. A key feature of the "B" and "BBB" revisions is the inclusion of an additional jumper (JP2) that specifically enables coordinated contactor operations, allowing multiple CDBA boards to work in sync for complex switching sequences. The board assembly is built for demanding industrial environments, featuring rugged construction, configurable jumpers, an adjustable potentiometer for current fine-tuning, and on-board diagnostic indicators.

Product Parameters

• Part Number: DS200CDBAG1BBB
• Manufacturer: General Electric (GE)
• Series: GE Mark V Speedtronic Turbine Control System, AC2000/DC2000 Drive Applications
• Product Type: Contactor Driver Board Assembly (CDBA)
• Functional Revisions: Has three significant revisions (A-rated, B-rated, and B-rated), indicating multiple updates.
• PCB Coating: Normal coating for environmental protection.
• Input Power: 75 to 140 V AC/DC (protected by a fuse, typically a 4 amp, 125V, 2AG slow-blow fuse, FU1). If the fuse blows often, it may indicate a board issue.
• Contactor Coil Voltage Compatibility: Designed for contactors with coil voltages between 30 and 40 V DC. The board applies 105 V DC for approximately 250 ms to ensure contactor closure, then regulates the current to a preset holding level.
• Adjustable Current Control: Features an adjustable potentiometer (RV1) to set the contactor drive current. Typical setting is 1.5 A; however, for DS304-type contactors, it should be 0.75 A. Critical Note: When replacing this board, RV1 MUST be adjusted to the exact position of the old board to prevent contactor coil failure.
• Configurable Jumpers:
• Includes Berg-type jumpers (e.g., JP1).
• JP2: Specific to G1B and G1BBB revisions, used for coordinated contactor operations, enabling simultaneous operation of multiple contactors in a multi-bridge system.
• Diagnostic Features:
• TP1 (ACOMA): Common Reference Point.
• TP2 (P15A): +15 V DC power supply reference point.
• TP3 (REFA): Contactor Driver Reference Voltage Point.
• LED Indicator (LED1): Displays status, including when the board has selected coordination mode.
• Test Points (Three total):
• Connectors: All power, input, and output signals are connected via a single main connector (1TB), which is divided into four sections (1TBA, 1TBB, 1TBC, 1TBD). Three plug connectors supply power and signals to 1TB.
• Instruction Manual: GEI-100182B Contactor Driver Board Instruction Manual.
• Physical Characteristics: Printed Circuit Board (PCB) assembly.

Product Application Cases

Case 1: Advanced Motor Drive Control and ProtectionIn large-scale industrial processes leveraging GE AC2000/DC2000 Adjustable Speed Drives, the DS200CDBAG1BBB is pivotal for sophisticated motor control. It enables rapid and precise engagement/disengagement of main power contactors, which is crucial for functions such as fast motor acceleration/deceleration, emergency stops, and comprehensive overload protection, ensuring the longevity and safety of high-value motor assets.

Case 2: Coordinated Emergency Shutdown Logic in Turbine SystemsWithin complex GE Mark V Turbine Control Systems, the DS200CDBAG1BBB's ability to support coordinated contactor operations (via JP2) is paramount for robust Emergency Shutdown (ESD) logic. For instance, in a turbine trip scenario, multiple fuel valves, lubrication pumps, and generator breakers might need to open or close simultaneously. This board ensures that these actions are precisely synchronized, enhancing safety and minimizing damage during critical events.

Case 3: Automated Sequencing in Industrial FacilitiesIn highly automated industrial plants, the DS200CDBAG1BBB facilitates complex operational sequences where multiple contactors need to be switched in a coordinated fashion. This could involve, for example, synchronizing the activation of various heating elements, cooling pumps, or material handling systems based on real-time process conditions, thereby improving operational efficiency and consistency.

Product User Reviews

"The DS200CDBAG1BBB is the most reliable version of the CDBA board we've used in our Mark V systems. The 'BBB' revision seems to have ironed out any minor quirks. Its role in coordinated contactor control is especially valuable for complex turbine startups and shutdowns. As always with these boards, setting the RV1 potentiometer correctly is absolutely crucial upon replacement – it's the most common installation error leading to issues." — Chief Electrical Engineer, Combined Cycle Power Plant

"For critical quick-dropout protection in our DC2000 drives, the DS200CDBAG1BBB is a fundamental component. It's built like a tank, designed to last decades in harsh industrial environments. While parts like these are legacy, their robust design and consistent performance are why we continue to rely on them to keep our older, but still highly functional, machinery running safely." — Maintenance Supervisor, Heavy Industry Manufacturing