GE IS200VAICH1DAA Analog Input/Output Board

GE IS200VAICH1DAA Analog Input/Output Board

The Analog Input/Output (VAIC) board accepts 20 analog inputs and controls 4 analog outputs. Each termination board accepts 10 inputs and 2 outputs. Cables connect the termination board to the VME rack where the VAIC processor board resides. The VAIC converts the inputs to digital values ​​and transmits them through the VME backplane to the VCMI board and then to the controller. For outputs, the VAIC converts the digital values ​​to analog currents and drives these currents through the termination board into the customer circuits. The VAIC supports both simplex and triple modular redundant (TMR) applications. When used in a TMR configuration, the input signals on the termination board are spread across three VME racks R, S, and T, each containing a VAIC. The output signals are driven through a proprietary circuit that utilizes all three VAICs to create the required current. In the event of a hardware failure, the bad VAIC is removed from the outputs and the remaining two boards continue to produce the correct current. When used in a simplex configuration, the termination board provides the input signal to a single VAIC, which provides the current for all outputs.