The GE IS200AEADH1A IS200AEADH1AAA input/output grid fork board distributes discrete I/O signals for Mark VI systems. This board interfaces between field devices and the main controller backplane. You will find this I/O board in Speedtronic Mark VI turbine control cabinets. Its grid fork design organizes signals efficiently across multiple channels.
Grid I/O Architecture
This grid fork board provides twenty-four configurable digital I/O channels. Consequently, it handles both input and output signals from field devices. The GE IS200AEADH1A IS200AEADH1AAA accepts 24V DC inputs from sensors and switches. Moreover, each output channel includes an LED status indicator. You can monitor field device states directly from the board.
Technical Specifications
| Parameter | Value |
|---|---|
| I/O Channels | 24, configurable as input or output |
| Input Voltage Range | 10-30V DC (24V DC nominal) |
| Input Current | 5 mA typical at 24V DC |
| Output Type | Open collector, 24V DC |
| Output Current | 0.5A per channel continuous |
| Response Time | 5 ms maximum (input), 2 ms (output) |
| Dimensions | 230mm x 170mm x 30mm |
| Weight | 0.58 kg (1.28 lbs) |
| PCB Layers | 6 |
| Onboard Components | 24 optocouplers, 24 drivers, 24 LEDs, 24 suppression diodes |
| Connector Count | 4 (field I/O, backplane, status, power) |
| Status Indicators | 24 LEDs (channel active), 2 LEDs (power, fault) |
| Energy Storage | 1000 µF (power filtering) |
| Isolation Voltage | 1500V (field side to logic side) |
| Output Protection | Short circuit, overcurrent (self-resetting) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Channel Configuration and Status Monitoring
The unit allows independent configuration of each I/O channel. Therefore, you can mix inputs and outputs on the same board. This board replaces the IS200AEADH1AAA version without any wiring changes. Simply remove the old board and install this one. GE designed this grid fork board for single-slot installation. Hence, it fits directly into existing Mark VI rack positions.
Six PCB layers separate field wiring traces from logic circuits effectively. Four connectors handle all field, backplane, status, and power signals. The GE IS200AEADH1A IS200AEADH1AAA includes suppression diodes across each output channel. Accordingly, it protects the board from inductive load kickback. Twenty-four LEDs show the active state of every channel clearly.
Output Protection and Installation Guide
Each output includes self-resetting overcurrent protection at 0.7A. A short circuit will temporarily disable only the affected channel. The GE IS200AEADH1A IS200AEADH1AAA works with all GE Mark VI control systems. Always use shielded cable for input wiring longer than 30 meters. Two additional LEDs indicate board power and fault conditions.
The board requires 24V DC power from the backplane. No external power supply is necessary for operation. The GE IS200AEADH1A IS200AEADH1AAA delivers reliable grid I/O for turbine systems. Installation requires only a screwdriver for field wiring connections. This board operates in non-condensing environments with adequate airflow.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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