GE IC693ALG390G Analog Output

Technical Specifications and Module Design

This analog voltage output module provides precise control signals for GE Series 90-30 PLC systems. The GE IC693ALG390G converts digital values from the CPU into analog voltage outputs. You can install this module into any standard 90-30 I/O rack slot position. Its high-resolution circuits ensure accurate positioning and speed control. The module weighs approximately 0.38 kilograms. Its dimensions measure 12.5 cm in height, 5.5 cm in width, and 11 cm in depth.

Parameter	Specification
Brand	GE Fanuc Automation
Model	IC693ALG390G
Category	Analog Voltage Output Module / D/A Converter Unit
Weight	0.38 kg
Height	12.5 cm
Width	5.5 cm (single slot)
Depth	11 cm
Number of Outputs	4 channels
Output Voltage Range	±10V DC or 0-10V DC (selectable)
Resolution	12-bit (0.0049V at 0-10V range)
Accuracy	±0.1% of full scale at 25°C
Settling Time	2 milliseconds to ±0.1% of full scale
Output Drive Capability	±10 mA maximum per channel
Load Impedance	2 kΩ minimum
Update Rate	4 milliseconds for all channels
Isolation Voltage	1500V AC between outputs and logic
Energy Storage	None (no battery)
Component Count	Single PCB with DACs, amplifiers, and optocouplers

Output Configuration and Signal Generation

Each channel independently generates voltage outputs for actuators and drives. You can select ±10V or 0-10V ranges using the configuration software. The GE IC693ALG390G provides 12-bit resolution for precise analog control. Built-in buffers protect the outputs from short circuits to ground. The module updates all four channels every 4 milliseconds simultaneously. A green LED indicates proper power and communication status. The outputs default to 0V during power loss or CPU stop conditions.

Signal Processing and Protection Features

The module receives digital values from the CPU through the backplane. It converts these values to analog voltages using multiplying DACs. The GE IC693ALG390G includes output clamping circuits for overvoltage protection. Each channel can withstand continuous short circuits without permanent damage. The module provides optical isolation between the outputs and the backplane. Consequently, field wiring faults will not damage the PLC logic. Each output includes a voltage follower amplifier for low impedance drive.

Installation and Operational Guidelines

You must insert this module into any standard Series 90-30 I/O slot. The backplane supplies 5V and ±15V DC power to the module automatically. The GE IC693ALG390G draws approximately 200 mA from the 5V supply rail. It draws an additional 50 mA from each of the ±15V rails. You must use shielded twisted-pair cables for all analog output connections. This practice prevents electrical noise from corrupting the control signals. The module stores no output values when you remove system power. Therefore, the CPU must re-initialize all outputs after each power-up cycle.