IC693ALG220 GE Channel Analog Voltage Input Module

IC693ALG220 GE Channel Analog Voltage Input Module

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Product Details

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.

This module is also equipped with an LED to alert the user regarding operation. This LED is conveniently located near the top of the faceplate. During normal operation, the LED will emit the ON status. Utilizing optical isolation, this module creates electrical isolation of external noise between field wiring and the backplane. To reduce the capacitive loading and noise, it is recommended that the module’s field connections be wired using an appropriate grade of twisted/shielded instrumentation cable.

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