DS200DCFBG1B: One of GE’s best innovations for the Mark V series

DS200DCFBG1B is a power supply board produced and marketed by General electric. This board works best with all the turbines of the Mark V series.

The DS200DCFBG1B comes with numerous features to work better than its competitors. For example, this power supply board can power both the drive’s control level and the enclosure fan on its own.

DS200DCFBG1B is the best for use in drives of CB2000, FC2000, DC2000, ME2000, EX 2000 and AC2000 series machines,

The frequency of the board ranges from anywhere from 0 to 500 Kilohertz. Although, they are dependent on the input voltage. Moreover, the control power transform allows a 38 to 115 VAC direct voltage supply to the DS200DCFBG1B board.

The Mark V system

The DS200DCFBG1B is designed to work with the DS200 Mark V series of General Electric. This series is one of the most reliable and competent Electro-hydraulic Control systems. It is an essential part of the Gas and Steam turbine controls.

The Mark V series comprises a three-modular redundancy control system. This system can handle mid-size to large steam turbines with a redundant operator interface installed. There are three similar controllers in the core system of the Mark V SpeedTronic system. These controllers are R, S, and T. They perform significant tasks like algorithms, sequencing, and numerous protecting functions.

Moreover, these controllers also acquire the required data to produce a considerable output to the turbine. Lastly, the P module has a triple processor of its own called X, Y, and Z. These processors work in their capacity to perform numerous essential functions like avoiding overheating the turbine, overspeeding of the turbine, etc.

Essential components of DS200DCFBG1B circuit board

There are many parts of the DS200DCFBG1B board. These parts include:

• Jumpers and dual-in-line package switches: These components allow the users’ system some better configuration choices. They are twelve and seven in quantity, respectively.
• LED and neon indication light: These indicators display the fuse switch diagnostics.
• Protection fuses: Three protection fuses ensure that the power supply does not disrupt.
• Test points: There are five test points on the DS200DCFBG1B board that is brought in use to measure and check upon the voltages.
• Motor voltage attenuation circuit: This circuit is biased at 2.5 volts. It has a range between 0 to 5 volts. However, it depends on the voltage of the motor. Moreover, there is an analog representation of the motor voltage.

Some other essential parts of the board are:

• Motor field power
• Driver
• AC/DC monitoring
• Control level supply circuits

Reinstating a DS200DCFBG1B power supply board

• Switch the main power off to the drive and cut the board’s power. Wait for a while to ensure the complete discharge from all the capacitors.
• Expose the drive controller board by opening the cabinet doors where the equipment board is present.
• The power supply board is mounted in the front, whereas the PCCA board is set up in the back of the board carrier.
• Lift the front board carrier by pulling the lock tabs on the opposite side of the board’s rack. Tilt it and pull it down with a forward motion to pry it open.
• Lift the second board carrier similarly to reach the PCCA board.
• For the hard part, start disconnecting all the cables from the PCCA board. However, it would be best to be delicate with these cables individually. To have a better idea, it is best if you keep these instructions in mind:
• Ribbon cables: grasp both sides of the connector attached to the board’s connector and gently yank the connector free from its joints. Also, if the cables are pulled tabs, try pulling on those tabs.
• Plastic holders: release the board from the board’s carrier by pushing the six plastic holders back.

Now replace the board easily, but make sure that the new board’s jumpers are in the same position as they were in the last panel.

How to identify your DS200DCFBG1B board

One minor inconvenience that appears when you deal with circuit boards is that they all look the same. It can cause a nuisance to the operator. To correctly identify your power supply board, you need to spot the alphanumeric code stamped on the hardware of the series scaling board.

Additionally, keep in mind that DS200DCFBG1B itself is an identification code for General Electric boards. This code does not have randomized series of alphabets. On the contrary, these alphabets and numbers reveal a functional change in their variant. Another example is the G1B in the name of the board. The G1B expresses the power circuit board’s variation.

Forewarning

The DS200DCFBG1B is a delicate piece of equipment. Therefore, it is crucial to handle it with the utmost care. Unprofessional handling of the board can make it a potentially dangerous object. The power circuit can even cause a burn or an electric shock if handled poorly.

The DS200DCFBG1B has a Silicon Controller Rectifier Potential that makes it thousands of volts above the ground. Hence, it is best not to touch the board or meddle with it while the power is on.

Mark V series user-friendly advise

The Mark V series by General Electric has been around for more than 30 years. Its compatibility with various gas and steam turbines made it a favorite among countless users. Although, there are some things you need to deal with before buying a board for your Mark V system

Firstly, always prioritize the manuals when you are looking for instructions or are trying to replace anything. The guidelines in the manual are precise and are written by the designers of the board. So, they are your best source for exquisite, first-hand knowledge.

Additionally, keep in mind that General Electric has stopped producing new DS200 Mark V machines. Therefore, your best option is to buy some supplies in bulk for rainy days.