GE IS200VAICH1C IS200VAICH1CCC | Analog Input VME Card

Core Function and System Role

The GE IS200VAICH1C acquires analog signals for Mark VI turbine systems. Specifically, this VME card reads voltage and current from field sensors. Moreover, it communicates directly with the main processor via the backplane. The IS200VAICH1CCC variant includes enhanced filtering for noisy industrial environments.

Technical Specifications Overview

This analog input VME card features sixteen differential input channels. Each channel provides 16-bit resolution for accurate measurements. Furthermore, the card accepts ±10 Vdc or 4-20 mA field signals.

Parameter	Specification
Part Number	IS200VAICH1C / IS200VAICH1CCC
Type	Analog Input VME Card / Data Acquisition
Analog Inputs	16 Differential Channels
Resolution	16 Bits (65536 Counts)
Voltage Range	±10 Vdc
Current Range	4-20 mA (with external resistor)
Input Impedance	100 kΩ (Voltage), 250 Ω (Current)
Accuracy	±0.1% of Full Scale
Sample Rate	100 Hz per Channel
Common Mode Rejection	100 dB at 60 Hz
Backplane Interface	VME 96-pin Connector
Logic Power	5 Vdc from Backplane
Field Power	24 Vdc External
Dimensions (W x H x D)	233 x 160 x 20 mm
Weight	0.62 kg
Onboard Energy Storage	8 x 100 µF, 25V Capacitors

Connector Layout and Component Count

The card uses one 96-pin VME connector for backplane communication. For instance, this interface carries data, address, and power lines. Meanwhile, two 50-pin D-sub connectors handle all analog input wiring. The IS200VAICH1CCC adds six RC filter networks for input noise rejection.

Energy Storage and Signal Integrity

This analog input card includes local decoupling for stable conversion. Specifically, eight 100 µF capacitors filter both 5 Vdc and 24 Vdc supplies. Therefore, the card maintains accurate readings during transient loads. Additionally, onboard LED indicators show power and channel activity. For example, a green LED confirms proper logic power. Yellow LEDs flash during analog sampling on each channel.

Diagnostic Features and Fault Detection

The card continuously checks each input channel for open wires. Consequently, it sets a fault flag when it detects a broken sensor connection. Moreover, the GE IS200VAICH1C IS200VAICH1CCC includes self-calibration circuitry for long-term accuracy. This feature compensates for temperature drift and component aging. An onboard status register reports all channel health to the main controller.

Maintenance and Firmware Updates

You can update the card firmware through the VME backplane. Thus, you avoid removing the card for configuration changes. The card stores its calibration parameters in non-volatile memory. Therefore, settings persist through power cycles and card replacements.

Industrial Applications

This analog input VME card works inside GE Mark VI control cabinets. For reliable GE analog data acquisition, the IS200VAICH1C and IS200VAICH1CCC deliver exceptional performance. They provide accurate signal measurement for steam and gas turbine control loops.