GE DS200TCDAH1B DS200TCDAH1BJE Overspeed Board

Key Technical Specifications

This GE DS200TCDAH1B DS200TCDAH1BJE board operates from a 24V DC power supply. It monitors three independent speed inputs for turbine overspeed protection. The unit measures 22 cm in length, 16 cm in width, and 4.5 cm in height. Its total weight reaches 0.7 kg without any packaging materials.

The GE DS200TCDAH1B DS200TCDAH1BJE includes three magnetic pickup conditioner circuits for speed sensing. Additionally, it features one relay output for trip annunciation. A single 10-pin terminal block connects the sensor field wiring. The board contains 3 signal conditioners, 3 comparators, 1 microcontroller, 4 optocouplers, and 18 resistors.

Parameter	Value
Power Supply	24V DC ±10%, 200mA
Speed Input Channels	3 independent
Input Frequency Range	0.5 Hz to 10 kHz
Sensor Type	Magnetic pickup (MPU)
Dimensions (L x W x H)	22 cm x 16 cm x 4.5 cm
Weight	0.7 kg
Overspeed Trip Setting	Field adjustable (1-150% of rated)
Response Time	< 20 ms
Output Relay	1 unit (SPDT, 5A)
Field Connector	10-pin terminal block
Signal Conditioners	3 units
Comparators	3 units
Microcontroller	1 unit (16-bit)
Optocouplers	4 units
Resistors	18 units
Capacitors	12 units
Energy Storage	100 µF at 35V

GE DS200TCDAH1B DS200TCDAH1BJE stores energy using one electrolytic capacitor. This capacitor provides 100 µF at 35V rating for trip memory retention. Consequently, the board maintains fault status during 20 millisecond power interruptions. Therefore, overspeed trips remain latched through brief voltage dips.

Design and Integration

Both the GE DS200TCDAH1B and DS200TCDAH1BJE versions share identical overspeed logic. These boards use four-layer PCB construction with guarded analog traces for noise rejection. Consequently, the GE DS200TCDAH1B DS200TCDAH1BJE operates reliably from -15°C to +55°C ambient temperature.

For installation, you need M3 screws for the four mounting holes. The board draws 150 mA typical current from the 24V DC supply. Each input channel includes overvoltage protection up to 100V peak. We recommend using shielded twisted-pair cables for all speed sensor connections.

Practical Application

This emergency overspeed board monitors turbine shaft speed using three independent magnetic pickups. It trips the unit immediately when detecting speed above the setpoint. The GE DS200TCDAH1B DS200TCDAH1BJE also provides voting logic (2 out of 3) for high reliability. Therefore, it ensures safe turbine overspeed protection in GE control systems.