GE Fanuc IC693ALG391 Series 90-30 2 Channel Analog Output Module

Description

Key Technical Specifications

• Manufacturer: GE Fanuc Automation
• Part Number: IC693ALG391
• Product Family: Series 90-30 PLC
• Module Type: Analog Current Output Module
• Output Channels: 2 channels
• Output Signal Range: 0 to 20 mA, 4 to 20 mA
• Optional Voltage Output: 0 to 5 VDC, 1 to 5 VDC
• Resolution: 12-bit digital-to-analog conversion
• Calibration: Factory calibrated, 4 µA per count
• Update Rate: 5 ms for both channels
• External Supply Voltage: 20 to 30 VDC
• Maximum Output Load: 5 mA (2 kΩ typical load)
• Field-to-Logic Isolation: 1,500 VAC for 1 minute
• Power Consumption: 30 mA from +5 VDC bus; 215 mA from isolated +24 VDC supply
• Connection Type: 20-screw removable terminal block
• Installation Position: Any I/O slot in Series 90-30 baseplate
• Status Indicator: Module OK LED

The GE Fanuc IC693ALG391 is a 2-channel analog output module for the Series 90-30 PLC platform. It converts PLC digital values into analog current or voltage signals for industrial control applications.

Product Introduction

The GE Fanuc IC693ALG391 is a Series 90-30 analog output module designed for applications requiring precise analog control signals. It provides two output channels with 12-bit digital conversion and supports standard industrial signals including 0-20 mA, 4-20 mA, 0-5 VDC, and 1-5 VDC.

This module is commonly used for controlling proportional valves, variable speed drives, actuators, and process equipment in legacy GE Fanuc PLC installations. The isolated output design separates field wiring from PLC logic circuits and helps reduce electrical noise problems in industrial environments.

IC693ALG391

IC693ALG391

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (Approx. 10 minutes)

⚠️ Safety First

• Notify operations before removing the analog output module.
• Place the controlled process into a safe state.
• Apply lockout/tagout procedures before accessing the PLC rack.
• Disconnect external 24 VDC field supplies connected to analog loads.

Tools Required

• ESD wrist strap
• PH1 screwdriver
• Digital multimeter
• Wire labels
• Smartphone/camera for wiring records

Data Backup

Before removal:

1. Record the PLC rack and slot location.
2. Photograph terminal wiring.
3. Document each analog output assignment.
4. Record scaling values from PLC logic.
5. Confirm output range settings.

Stage 2: Removing the Old Module (Approx. 10 minutes)

Steps:

1. Switch off Series 90-30 rack power.
2. Remove the terminal block carefully.
3. Label each output wire.
4. Release the module locking tab.
5. Pull the module straight out from the rack.

⚠️ Note:
Keep the original IC693ALG391 available until the replacement output signals have been verified.

Stage 3: Installing the New Module (Approx. 15 minutes)

Steps:

1. Wear an ESD wrist strap before handling the module.
2. Confirm the replacement model is IC693ALG391.
3. Verify output range configuration.
4. Insert the module into the correct Series 90-30 rack slot.
5. Reinstall the terminal block.
6. Check shield grounding and output polarity.

Configuration Clone Checklist

• Correct rack slot confirmed
• Output range verified
• Channel assignments matched
• Analog scaling checked
• Field wiring tightened

Stage 4: Power-On & Testing (Approx. 20 minutes)

Pre-Power Check

• Verify no short circuits exist on analog outputs.
• Confirm external 24 VDC supply voltage.
• Check actuator or drive input requirements.

Power-On Steps

1. Restore PLC rack power.
2. Confirm module OK LED status.
3. Verify CPU recognizes the analog output module.
4. Monitor PLC %AQ output values.
5. Measure actual output current/voltage using a multimeter.
6. Test connected field devices.

⚠️ Troubleshooting Note

If the output signal is incorrect:

• Verify output range selection.
• Check PLC scaling calculations.
• Confirm external supply wiring.
• Measure load resistance.
• Inspect shield grounding.

Frequently Asked Questions (FAQ)

Q1: Is the GE Fanuc IC693ALG391 obsolete?

Yes. The is a discontinued Series 90-30 PLC analog output module. Replacement units are generally sourced from new surplus, tested used, or refurbished automation inventories.

Q2: How many analog outputs does the provide?

The module provides two analog output channels. Each channel converts PLC digital data into analog current or voltage signals.

Q3: Does support 4-20 mA control loops?

Yes. The module supports 4-20 mA and 0-20 mA current output ranges. It can also provide 0-5 VDC and 1-5 VDC voltage signals depending on configuration.

Q4: Can I replace without modifying the PLC program?

Usually yes, if the replacement module is installed in the same rack slot and the output channel configuration remains unchanged. Always verify scaling logic because incorrect engineering units can cause incorrect field control.

Q5: Can be hot-swapped?

No. Remove power before installing or removing this module. Series 90-30 analog modules are not intended for live replacement during normal operation.

Q6: What applications commonly use the ?

Typical applications include:

• Control valve positioning
• Variable frequency drive speed references
• Analog actuator control
• Process regulation loops
• Machine control systems requiring analog commands

Q7: What should be checked before ordering ?

Verify:

• Exact part number:
• Platform: GE Fanuc Series 90-30
• Output type: Analog current/voltage output
• Channel count: 2
• Required signal range: 0-20 mA, 4-20 mA, 0-5 VDC, or 1-5 VDC
• Required condition: New Original, New Surplus, or Tested Refurbished

For Series 90-30 spare replacement projects, matching the output configuration and PLC scaling parameters is critical. A physically compatible module can still produce incorrect process control signals if configuration data is not transferred correctly.