This analog input VME card converts field sensor signals into digital values for GE Mark VIe systems. It accepts voltage or current inputs from transmitters and transducers. Therefore, it enables precise process monitoring for turbine control applications.
Physical and Input Specifications
The GE IS200VAICH1C IS200VAICH1CCC measures 23.0 cm in length and 16.0 cm in width. Moreover, its card weight equals approximately 0.48 kg for VME rack mounting. A single 64-pin female connector links this card to the VME backplane. Additionally, the card provides twenty independent analog input channels.
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Full Model | IS200VAICH1C IS200VAICH1CCC |
| Category | Analog Input VME Card |
| Dimensions (L x W) | 23.0 cm x 16.0 cm (9.06″ x 6.30″) |
| Card Weight | 0.48 kg (1.06 lbs) |
| Primary Interface | 1 x 64-pin Female Connector |
| Analog Input Channels | 20 Single-Ended Channels |
| Input Signal Range (Voltage) | 0 to +10 VDC, -10 to +10 VDC |
| Input Signal Range (Current) | 0 to 20 mA, 4 to 20 mA (with External Resistor) |
| Resolution | 16 Bits (0 to 65535 Counts) |
| Conversion Type | Sigma-Delta |
| Conversion Speed | 10 ms per Channel (200 ms for All 20 Channels) |
| Input Impedance (Voltage) | 1 MΩ (Typical) |
| Input Impedance (Current) | 250 Ω (with External Resistor) |
| Absolute Accuracy | ±0.2% of Full Scale at 25°C |
| Absolute Accuracy Drift | ±0.01% per °C |
| Common Mode Rejection | 100 dB (50/60 Hz) |
| Normal Mode Rejection | 80 dB (50/60 Hz) |
| On-Board Components | 2 ADC Chips + 20 Signal Conditioning Circuits + 20 Protection Diodes + 1 EMI Filter + 1 Voltage Reference IC + 1 Microcontroller + 2 Memory Chips |
| Energy Storage | 4 x 100 µF Electrolytic Capacitors (35V) + 4 x 10 µF Tantalum (25V) |
| Operating Voltage | +5 VDC, +15 VDC, and -15 VDC from Backplane |
| Power Consumption | 3.5 W (Typical) |
| Isolation Rating | 1500 Vrms (Field to Logic) |
| Common Mode Range | ±10 VDC Maximum |
| Operating Temperature | -20°C to +65°C (-4°F to +149°F) |
| Status Indicators | 1 Green LED (Power) + 1 Green LED (Active) + 1 Red LED (Fault) + 20 Green LEDs (Channel Valid) |
High-Density Analog Input Channels
The GE IS200VAICH1C IS200VAICH1CCC provides twenty analog input channels in a single VME slot. Specifically, the sigma-delta converter ensures excellent linearity and noise rejection. In addition, the 16-bit resolution delivers 65,535 discrete counts for precise measurement. Moreover, you can configure each channel independently for voltage or current inputs. Consequently, this card captures many process variables without occupying multiple slots.
Input Channel Features and Signal Conditioning
Each analog input channel includes a dedicated signal conditioning circuit. For instance, the input impedance of 1 MΩ minimally loads voltage-type sensors. In addition, protection diodes clamp input voltages to safe levels during faults. Moreover, the 100 dB common mode rejection eliminates ground loop interference effectively. Furthermore, the 80 dB normal mode rejection filters 50/60 Hz power line noise. Thus, this card delivers stable readings in electrically noisy turbine environments.
Energy Storage and Signal Integrity
This analog input VME card stores energy using eight onboard capacitors for power filtering. Specifically, four electrolytic capacitors smooth the ±15 VDC supplies for stable ADC operation. In addition, four tantalum capacitors provide high-frequency noise suppression for analog circuits. Furthermore, these capacitors maintain conversion accuracy during brief power interruptions. Therefore, the GE IS200VAICH1C IS200VAICH1CCC rejects electrical noise from turbine generators effectively.
Installation and Diagnostic Indicators
Twenty-two LED indicators provide operational status at a glance on this card. First, a green Power LED lights when the backplane supply voltages are present. Second, a green Active LED flashes during normal analog conversion operation. Third, a red Fault LED indicates hardware errors or out-of-range signals. Additionally, twenty green Channel Valid LEDs illuminate when each channel receives a valid signal. Furthermore, the card features four mounting holes for secure VME rack attachment. Thus, you can diagnose analog input status instantly without external tools.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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