The GE IS200TVBAH2A IS200TVBAH2ABC vibration input terminal board connects seismic sensors to Mark VI systems. This board conditions signals from accelerometers and proximity probes. You will find this terminal board in Speedtronic Mark VI turbine control cabinets. Its dedicated design supports continuous machine vibration monitoring.
Vibration Input Architecture
This vibration board provides eight independent input channels for seismic sensors. Consequently, it monitors bearing housing and casing vibration simultaneously. The GE IS200TVBAH2A IS200TVBAH2ABC accepts 4-20 mA signals from vibration transmitters. Moreover, built-in filters remove high-frequency noise from sensor signals. You can connect standard accelerometers without external conditioners.
Technical Specifications
| Parameter | Value |
|---|---|
| Input Channels | 8, single-ended |
| Input Signal | 4-20 mA (loop-powered) |
| Input Impedance | 250 Ω |
| Input Voltage Range | 1-5V DC (across 250Ω) |
| Accuracy | ±0.2% of full scale |
| Bandwidth | DC to 1 kHz (-3 dB) |
| Loop Power Supply | 24V DC (provided by board) |
| Dimensions | 230mm x 160mm x 25mm |
| Weight | 0.58 kg (1.28 lbs) |
| PCB Layers | 4 |
| Onboard Components | 8 current shunts, 8 filters, 8 protection circuits |
| Connector Count | 3 (sensor input, backplane, status) |
| Status Indicators | 8 LEDs (one per channel, loop fault) |
| Energy Storage | 470 µF (power filtering) |
| Isolation Voltage | 1500V (field to logic) |
| Loop Voltage | 24V DC ±5% |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
Loop Power and Fault Detection
The unit provides 24V loop power for each connected vibration sensor. Therefore, you do not need external power supplies for transmitters. This board replaces the IS200TVBAH2ABC version without any calibration changes. Simply remove the old board and install this one. GE designed this input board for single-slot installation. Hence, it fits directly into existing Mark VI rack positions.
Four PCB layers separate analog signal traces from power and digital lines. Three connectors handle all sensor, backplane, and status signals. The GE IS200TVBAH2A IS200TVBAH2ABC includes open-loop detection on each channel. Accordingly, it alerts the controller when a sensor fails or disconnects. Eight LEDs indicate loop fault conditions for every channel.
Installation and Wiring Guide
Each channel includes transient protection for the 4-20 mA loop. The board withstands accidental connection to 120V AC. The GE IS200TVBAH2A IS200TVBAH2ABC works with all GE Mark VI vibration monitoring systems. Always use shielded twisted-pair cable for sensor wiring beyond 30 meters. Connect the shield only at the board end for best noise rejection.
The board accepts two-wire loop-powered transmitters only. Do not connect three-wire or four-wire devices to this board. The GE IS200TVBAH2A IS200TVBAH2ABC provides reliable vibration monitoring for turbine protection. Installation requires only a screwdriver for sensor and power connections. This board operates in non-condensing environments with adequate clearance.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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