IS200DAMEG1A - Gate Amplifier/Interface Board

SPECIFICATIONS

Part Number: IS200DAMEG1A
Manufacturer: General Electric
Function: Gate Drive Amplifier and Interface board
Frame Rate: 65
Functional Abbreviation DAME
LED Indicators None
Pin Quantity 6
Manual GEI-100262A
Power supply input: +15/-7.5
Powerrex IGBT: CM100TF-28H
No.of board/drive: 1
IGBT/phase leg: One
Series: Drive Control
Country of Manufacture: United States (USA)

Functional Description

IS200DAMEG1A is a gate amplifier/interface board developed by General Electrics. It is a part of GE drive control system. It is used to connect power switching devices in the Innovation Series control rack. There are no test points, configurable items, or fuses on this board. In low voltage drives, it serve as an interface between the power switching devices or IGBTs and the control rack. They provide an interface with no amplifying and no power input. DAM boards are used to connect the control rack's collector terminals, emitter, and IGBT gate, as well as the Bridge Personality Interface board. This model was created to control the interfacing between power switching devices known as IGBTs for low voltage drives and the Innovation Series control rack. The DAME board is used for interfacing without amplification and has no power inputs. This board is one of six variations and has a drive power rating of 65 frames. The board will be used with a phase leg drive, and there will only be one board that can be used with all three phases. There will also be a variety of different IGBTs used per phase leg; however, this particular board only has one IGBT module that will be used for all three phases.

IS200DAMEG1A Features

• DAME is used for interfacing without any type of amplification and does not have any power inputs. This board is one of six variations and has a drive power rating of 65 frames.
• The board is used with a phase leg drive, and there will only be one board that can be used with all three phases. There are also various IGBTs that will be used per phase leg; however, this particular board only has one IGBT module that is used for all three phases. For input and output connection with the BPIA board, there are three connectors: CPL for phase C marked as U, BPL for phase B marked as V, and APL for phase A marked as W.
• The board has six connectors. Each pin has a different name and description; for example, pin five is labeled as common and is named _PCOM; this common pin is the emitter of phases in the positive/upper IGBT model.
• If this board needs to be replaced, either the IGBT or the DAME board must be replaced as they are soldered together. Please turn off the power to the control before removing or inserting the DAMEG1A to avoid potential shock.
• For input and output connection with the BPIA board, there are three connectors: CPL for phase C marked as U, BPL for phase B marked as V, and APL for phase A marked as W.

Product Attributes

• Signal Input: The board receives a low-level input signal from a field device such as a sensor, switch, or controller. The input signal is amplified to a higher level suitable for further processing.
• Amplification: The board has a built-in amplifier that amplifies the input signal to a level that can be easily processed by the control system.
• Isolation: The board provides electrical isolation between the input signal and the output signal, which helps protect the control system from any electrical noise or surges in the input signal.
• Signal Output: The board provides a high-level output signal that can be used to trigger an alarm, control a motor or valve, or interface with a PLC or DCS system.
• Protection: The board provides protection features such as overvoltage protection and short-circuit protection to safeguard the connected equipment.

Board Replacement Procedure

To remove the board and IGBT module

1. Ensure that the drive where the board is located has been deactivated.
2. Open the cabinet door on the drive. Test any electrical circuits before touching them with high-voltage equipment to ensure that power is turned off.
3. Place the heatpipe heat exchanger assembly and the IGBT modules (with DAME boards attached) directly below.
4. Disconnect the cables from the DAME board's connectors APL, BPL, and CPL. Remove them from the way.
5. Disconnect the three nuts, washers, and spring lock washers that hold the three shunt cables to the IGBT studs.
6. Reposition the three cables so that they do not interfere with the removal of the DAME board and IGBT module.
7. Disconnect the two nuts, washers, and spring lock washers that hold the outer flex circuit to the IGBT studs. Reposition the flex circuit so that it does not interfere with the removal of the DAME board and IGBT module.
8. Unscrew the two nuts, washers, and spring lock washers that hold the inner flex circuit to the IGBT studs. Reposition the flex circuit so that it does not interfere with the removal of the DAME board and IGBT module.
9. Remove the four Allen-head bolts and washers that hold the IGBT module to the heatsink, and then the IGBT module and board.
10. Remove the IGBT module's seven studs, washers, and spring lock washers (that the shunt cables and flex circuit fasten to).

To install the IGBT module with board

1. Place the seven studs, washers, and spring lock washers into the new IGBT module with DAME board and fully tighten them. (Reinstall the studs in the same positions from which they were removed.)
2. Attach the new IGBT module with DAME board to the heatsink in the following manner:
   1. Apply an even layer of Dow Corning 340 silicon grease (or equivalent) to the IGBT module's back mounting surface (must be at least 6 mils thick).
   2. Insert the four Allen-head bolts and washers into the mounting holes and orient and position the IGBT module with DAME board in the same position as the one removed in the previous procedure.
   3. Tighten the four bolts (in a diagonally crossing pattern; top left, lower right, top right, lower left).
   4. Tighten the four bolts to 40 inch-pounds torque (in a diagonally crossing pattern, reversed from substep c).
3. Reattach the inner flex circuit to the mounting studs with two nuts, washers, and spring lock washers.
4. Reposition the outer flex circuit and secure it with two nuts, washers, and spring lock washers.
5. Replace the three shunt cable assemblies with three nuts, washers, and spring lock washers on the IGBT module studs (removed in step 5).
6. Reconnect the cables to the new DAME board's connectors APL, BPL, and CPL.
7. Check all connections, buses, and bolted hardware for proper installation.
8. Visually inspect the drive cabinet for any tools, debris, or other hardware that may have been left in the drive and remove it.
9. Keep the drive cabinet door closed.

Output Processing

• The system outputs are the portions of calculated data that are transferred to external hardware interfaces and then to the various actuators that control the process. The output voting hardware votes on TMR outputs.
• Through simplex hardware, any system can output individual signals. The TMR system outputs are calculated independently by the three voting controllers. Each controller sends output to the I/O hardware associated with it (for example, the R controller sends output to the R I/O). A voting mechanism then combines the three independent outputs into a single output. Different signal types necessitate distinct methods for determining the voted value. The three controllers' signal outputs are divided into three categories:
  • Individual I/O networks drive outputs as single-ended non-redundant outputs.
  • There are outputs on all three I/O networks, which are merged into a single signal by the output hardware.
  • Outputs exist on all three I/O networks and are routed to the controlled process separately. This procedure may include external voting hardware.
• The three signals feed a voting relay driver, which operates a single relay per signal for normal relay outputs. For critical protective signals, the three signals feed a voting relay driver, which operates a single relay per signal. Three independent relays are driven by the three signals, with the relay contacts connected in the standard six-contact voting configuration.

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FREQUENTLY ASKED QUESTIONS

What is IS200DAMEG1A?
It is a gate amplifier/interface board developed by General Electrics

What is the drive power rating of the board?
The board has a drive power rating of 65 frames.

What type of drive is used with the DAMEG1A?
The board is used with a phase leg drive.

What are the input and output connectors for the board?
There are three connectors- CPL for phase C marked as U, BPL for phase B marked as V, and APL for phase A marked as W.

How is the board used in low voltage drives?
In low voltage drives, the board acts as an interface between power switching devices (IGBTs) and the control rack. It ensures proper communication without amplification.

How many variations of this board exist and what is the power rating?
There are six variations of this board. The drive power rating is 65 frames.

Can a single board be used for all three phases in a phase leg drive?
Yes, the board is used for interfacing in a phase leg drive, and one board can be used with all three phases.

How are input and output connections made with the BPIA board?
The board has three connectors: CPL for phase C marked as U, BPL for phase B marked as V, and APL for phase A marked as W.