GE DS200KLDBG1A DS200KLDBG1ABA EX2000 Display Board

Key Technical Specifications

This GE DS200KLDBG1A DS200KLDBG1ABA board operates from a 24V DC power supply. It provides LCD display interface and keypad control for EX2000 systems. The unit measures 19 cm in length, 14 cm in width, and 3.5 cm in height. Its total weight equals 0.5 kg without any packaging materials.

The GE DS200KLDBG1A DS200KLDBG1ABA includes 16 membrane keys and LCD driver circuitry. Additionally, it features one 20-pin ribbon connector for host interface. A single 4-pin terminal block connects the DC power input. The board contains 16 key switches, 1 LCD controller, 1 keypad encoder, 4 status LEDs, 10 resistors, and 8 capacitors.

Parameter	Value
Power Supply	24V DC ±10%, 120mA
LCD Type	Character (16×2 or 20×4)
Number of Keys	16 membrane type
Key Matrix	4 rows x 4 columns
Dimensions (L x W x H)	19 cm x 14 cm x 3.5 cm
Weight	0.5 kg
LCD Interface	20-pin ribbon header
Key Scan Method	Matrix scanning
Debounce Time	20 ms (hardware)
Status LEDs	4 units (green)
Power Connector	4-pin terminal block
Key Switches	16 units (tactile)
LCD Controller	1 unit
Keypad Encoder	1 unit
Resistors	10 units
Capacitors	8 units
Energy Storage	22 µF at 35V

GE DS200KLDBG1A DS200KLDBG1ABA stores energy using one electrolytic capacitor. This capacitor provides 22 µF at 35V rating for key debounce filtering. Consequently, the board prevents false key readings during 10 millisecond power fluctuations. Therefore, operator inputs remain accurate in noisy industrial environments.

Design and Integration

Both the GE DS200KLDBG1A and DS200KLDBG1ABA versions share identical display and keypad circuitry. These boards use two-layer PCB construction with ESD protection diodes on all key inputs. Consequently, the GE DS200KLDBG1A DS200KLDBG1ABA operates reliably from -10°C to +55°C ambient temperature.

For installation, you need M3 screws for the four mounting holes. The board draws 100 mA typical current from the 24V DC supply. The display interface supports standard character LCD modules. We recommend mounting the board behind a sealed front panel for environmental protection.

Practical Application

This EX2000 display board provides local operator interface for excitation control systems. It reads key presses and updates the LCD screen with system parameters. The GE DS200KLDBG1A DS200KLDBG1ABA also sends operator commands to the main controller. Therefore, it enables local monitoring and configuration for GE EX2000 exciters.