GE IC693ALG220 Channel Analog Voltage Input module IC693 ALG 220

GE IC693ALG223 PACSystems RX3i Analog Current Input Module

The IC693ALG220 is a Channel Analog Voltage Input module for the Series 90-30.  This Programmable Logic Controller delivers four input channels, each able to convert an analog input signal to a digital signal as needed by the user. The module can convert inputs in the range of -10 to +10 volts. Conversion speed for each channel is 1 ms, thus providing an update rate of 4 ms for any channel. Converted signal resolution is 12 bits binary. User data in the %AI registers is in 16-bit 2’s complement format.

This input module is equipped with a limited current input mode and a jumper on the user terminal connector for each channel. The latter can be used to connect the internal 250 ohm shunt resistor to the circuit. The shunt resistor allows a –40 to +40 mA current input range. It is important, however, for the user to monitor input current to avoid self-heating of the input resistor. Otherwise, current accuracy could be negatively affected. The primary power source for the IC693ALG220 comes from the isolated +24 VDC power supplied via the PLC power supply. Voltage is sent through an inverter/regulator to yield operating voltages for the module. The IC693ALG220 uses 27 mA from the +5 VDC output of the PLC power supply.

GE IC693ALG220 Technical drawing:

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