GE Fanuc 2-Channel Analog Voltage Output Module IC693ALG390

The 2-Channel Analog Voltage Output module for the Series 90-30 IC693ALG390 Programmable Logic Controller provides two output channels, each capable of converting 13 bits of binary (digital) data to an analog output for use as required by your application. The Analog Voltage Output module is capable of providing outputs in the range of –10 to +10 volts. The resolution of the converted signal is 12 bits binary plus sign which is effectively 13 bits (1 part in 8192). Both channels are updated on every scan (about 5 milliseconds). User data in the %AQ registers is in a 16-bit 2’s complement format. The 13 most significant bits from the %AQ register are converted to sign-magnitude by the PLC and sent to the module for use by the D/A converter circuitry. The placement of the 13 bits converted to sign-magnitude is shown below. The relationship between the voltage output and the data from the D/A converter is shown in Figure 3-30.

To minimize capacitive loading and noise, all field connections should be wired using a good grade of twisted, shielded instrumentation cable. The shields should be connected to GND on the user terminal connector block. The GND connection provides access to the baseplate (frame ground) resulting in superior rejection of noise caused by any shield drain currents.

The module provides electrical isolation of externally generated noise between field wiring and the backplane through the use of optical isolation. This module can be installed in any I/O slot of a 5 or 10-slot baseplate in a Series 90-30 PLC system. Refer to page 3-11 to determine the number of Analog Voltage Output modules that can be installed in a system.

IC693ALG390 Analog Voltage Output Module Specifications