This printed circuit board provides digital input and output interface for GE Mark VIe turbine systems. It connects field devices such as switches, relays, and solenoid valves to the controller. Therefore, it enables reliable discrete I/O control for turbine protection and sequencing.
Physical and I/O Specifications
The GE IS200DBIAG1A IS200DBIAG1ABB measures 26.0 cm in length and 18.5 cm in width. Moreover, its board weight equals approximately 0.55 kg for rack mounting. A single 64-pin male connector links this board to the VME backplane. Additionally, the board integrates thirty-two digital I/O channels with field wiring terminals.
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Full Model | IS200DBIAG1A IS200DBIAG1ABB |
| Category | Printed Circuit Board (Digital I/O) |
| Dimensions (L x W) | 26.0 cm x 18.5 cm (10.24″ x 7.28″) |
| Board Weight | 0.55 kg (1.21 lbs) |
| Primary Interface | 1 x 64-pin Male Connector |
| Field Wiring Points | 32 Screw Terminal Blocks |
| Digital Input Channels | 16 Channels (24 VDC, Sink/Source) |
| Digital Output Channels | 16 Channels (Transistor, NPN Sinking) |
| Input Voltage Range | 0 to 30 VDC |
| Input On-State Voltage | > 15 VDC |
| Input Off-State Voltage | < 5 VDC |
| Input Impedance | 4.7 kΩ |
| Input Response Time | 3 ms (Typical) |
| Output Voltage Range | 12 to 24 VDC |
| Output Current per Channel | 0.5 A (Continuous), 0.8 A (Peak) |
| Total Output Current | 5.0 A Maximum (All Channels Combined) |
| Output On-State Drop | < 1.2 VDC at 0.5 A |
| Output Off-State Leakage | < 0.1 mA at 24 VDC |
| Output Protection | Short Circuit + Overtemperature |
| Output Response Time | 0.5 ms Maximum |
| On-Board Components | 16 Input Optocouplers + 16 Output Transistors + 16 Flyback Diodes + 2 Current Sense ICs + 8 Protection Diodes + 1 Voltage Regulator + 1 EMI Filter + 1 LED Driver IC |
| Energy Storage | 3 x 100 µF Electrolytic Capacitors (35V) + 3 x 10 µF Tantalum (25V) |
| Operating Voltage | +5 VDC and +24 VDC from Backplane |
| Isolation Rating | 1500 Vrms (Field to Backplane) |
| Operating Temperature | -20°C to +65°C (-4°F to +149°F) |
| Status Indicators | 16 Green LEDs (Input Status) + 16 Green LEDs (Output Status) + 1 Green LED (Power) + 1 Red LED (Fault) + 1 Green LED (24V OK) |
Digital Input Features and Signal Processing
The GE IS200DBIAG1A IS200DBIAG1ABB accepts sixteen discrete input signals at 24 VDC. Specifically, each input includes an optocoupler for complete electrical isolation. In addition, the input impedance of 4.7 kΩ suits standard industrial sensors. Moreover, all input channels respond within 3 milliseconds to signal changes. Consequently, this board captures fast field events for turbine protection logic.
Digital Output Features and Protection Systems
Sixteen transistor outputs provide NPN sinking capability for actuator control. For instance, each output delivers 0.5 amp continuously at 24 VDC. In addition, internal flyback diodes protect the transistors when driving inductive loads. Furthermore, short circuit protection shuts down any faulty channel automatically. Moreover, current sensing ICs monitor total load across all output channels. Thus, this board survives wiring mistakes without permanent damage.
Energy Storage and Operational Stability
This printed circuit board stores energy using six onboard capacitors for power filtering. Specifically, three electrolytic capacitors smooth the 24 VDC supply for stable optocoupler operation. In addition, three tantalum capacitors provide high-frequency noise suppression for logic circuits. Furthermore, these capacitors maintain I/O status during brief power interruptions. Therefore, the GE IS200DBIAG1A IS200DBIAG1ABB continues operating through minor supply dips reliably.
Installation and Diagnostic Indicators
Thirty-five LED indicators provide operational status at a glance on this board. First, a green Power LED lights when the 5 VDC backplane supply is present. Second, a green 24V OK LED indicates external load supply voltage is present. Third, sixteen green Input Status LEDs light when each corresponding input receives an active signal. Fourth, sixteen green Output Status LEDs illuminate when each output channel turns on. Finally, a red Fault LED signals overtemperature or overcurrent conditions. Additionally, the board features six mounting holes for secure rack attachment. Thus, you can diagnose system status instantly without external tools.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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