GE IC693ALG220 Analog Voltage Input Module

The IC693ALG220 4-Channel Analog Voltage Input module for the Series 90-30 Programmable Logic Controller provides four input channels, each capable of converting an analog input signal to a digital signal for use as required by your application. The Analog Voltage Input module is capable of converting inputs in the range of-10 to +10 volts. Conversion speed for each of the four channels is one millisecond. This provides an update rate of four milliseconds any channel.

IC693ALG220 Features：

A limited current input mode is also provided in the module. A jumper is provided on the user
terminal connector for each channel, which may be used to connect the internal 250 ohm shunt
resistor into the circuit. The shunt resistor effectively provides a –40 to +40 mA current input
range. However, the input current should generally not exceed ±20mA to avoid self-heating
of the input resistor and a corresponding loss of accuracy. A 4 to 20 mA input corresponds to a
1 to 5 volt input to the voltage input module; therefore, the resolution of the 4 to 20 mA input
signal is approximately 10 bits binary (1 part in 1024). The resolution can be increased to
approximately 11 bits (1 part in 2048) by using a precision 250 ohm resistor in place of the
jumper. The resistor causes the voltage input module to see a 4 to 20 mA input as 2 to 10 volts.
The main power source for the module is derived from the isolated +24 VDC power supplied
by the PLC power supply. This voltage is routed through an inverter/regulator to produce the operating voltages for the module. This module also consumes 27 mA from the +5 VDC output of the PLC power supply. An LED at the top of the module's faceplate is ON when the module's power supply is operating. The module provides electrical isolation of externally generated noise between the field wiring and the backplane through optical isolation.To minimize the capacitive loading and noise, all field connections to the module should be wired using a good grade of twisted, shielded instrumentation cable. The shields can be connected to either COM or GND. The COM connection provides access to the common of the
analog circuitry in the module. The GND connection provides access to the baseplate (frame ground). This module can be installed in any I/O slot of a 5 or 10-slot baseplate in a Series 90-30 PLC system.

IC693ALG220 Analog Voltage Input Block Diagram

Specifications for Analog Voltage Input Module - IC693ALG220