The GE IS200EISBH1A IS200EISBH1AAA exciter ISBus board provides isolated I/O for Mark VI excitation systems. This board interfaces between the main controller and field devices. You will find this ISBus board in GE Mark VI exciter control cabinets. Its isolated design prevents ground loops in sensitive exciter circuits.
ISBus Architecture
This exciter board provides eight configurable I/O channels for field signals. Consequently, it handles both analog and digital excitation functions. The GE IS200EISBH1A IS200EISBH1AAA includes channel-to-channel isolation for maximum safety. Moreover, onboard processing reduces main controller workload. You can configure each channel independently for different signal types.
Technical Specifications
| Parameter | Value |
|---|---|
| I/O Channels | 8, configurable as input or output |
| Analog Input Ranges | 0-10V, ±10V, 4-20mA (selectable) |
| Analog Output Ranges | 0-10V or 4-20mA |
| Digital Input Voltage | 24V DC sink/source |
| Digital Output Type | Open collector, 24V DC, 0.5A |
| Resolution | 16-bit (analog), 1-bit (digital) |
| Accuracy | ±0.1% of full scale (analog) |
| Dimensions | 220mm x 160mm x 30mm |
| Weight | 0.62 kg (1.37 lbs) |
| PCB Layers | 6 |
| Onboard Components | 1 microcontroller, 8 isolation barriers, 8 ADCs/DACs |
| Connector Count | 3 (field I/O, backplane, status) |
| Status Indicators | 8 LEDs (channel active), 2 LEDs (power, fault) |
| Energy Storage | 1000 µF (power filtering) |
| Isolation Voltage | 1500V (channel-to-channel and channel-to-logic) |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Channel Isolation and Signal Integrity
The unit includes independent isolation barriers for each channel. Therefore, a fault on one channel cannot affect others. This board replaces the IS200EISBH1AAA version without any configuration changes. Simply remove the old board and install this one. GE designed this ISBus board for single-slot installation. Hence, it fits directly into existing Mark VI rack positions.
Six PCB layers separate I/O traces from digital logic circuits. Three connectors handle all field, backplane, and status signals. The GE IS200EISBH1A IS200EISBH1AAA includes 16-bit ADCs for precise analog measurements. Accordingly, it provides accurate excitation current and voltage monitoring. Eight LEDs show the active state of every channel clearly.
Configuration and Installation Guide
You can configure each channel as analog input, analog output, or digital I/O. Software settings determine the function of each channel. The GE IS200EISBH1A IS200EISBH1AAA works with all GE Mark VI excitation systems. Always use shielded cable for analog wiring longer than 10 meters. Proper grounding of cable shields prevents noise coupling.
The board requires 24V DC power from the backplane. No external power supply is necessary for operation. The GE IS200EISBH1A IS200EISBH1AAA delivers reliable isolated I/O for exciter control. 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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