Product Overview

The GE IC670ALG320 Current/Voltage Source Analog Output Module is an industrial automation I/O component designed to provide analog output signals to field devices and process equipment. It is used in control systems where a controller needs to send continuously variable electrical signals rather than simple ON/OFF commands.

Analog output signals are commonly used to control devices such as valve positioners, variable-speed equipment, actuators, current-driven instruments, and other process control devices. By providing a proportional output signal, the module allows the control system to adjust equipment according to the required process value.

The IC670ALG320 is part of the GE Field Control automation family and is intended for modular industrial control architectures. Its role is on the output side of the I/O system, converting control information from the automation system into usable analog signals for connected field equipment.

The module supports both current and voltage source analog output applications, making it suitable for control systems that use different types of analog signal interfaces.

Technical Specifications

Product Features

The GE IC670ALG320 provides an analog output interface for automation systems that need to control field equipment using proportional electrical signals.

Key features include:

• Current and voltage source analog output capability
• Designed for GE Field Control automation systems
• Provides proportional control signals
• Suitable for process control applications
• Interfaces controllers with analog field devices
• Supports modular I/O system architectures
• Compact industrial design
• Suitable for control cabinet installation
• Lightweight 0.25 kg construction
• Useful for applications requiring continuous equipment adjustment

Unlike a discrete output module that only provides an ON or OFF command, an analog output module can vary the output signal according to the control requirement.

Working Principle

The IC670ALG320 receives output commands from the automation system and produces corresponding analog electrical signals for connected field devices.

For example, a controller may determine that a control valve should move to a particular position. The required control value is transferred to the analog output module, which generates the corresponding current or voltage signal. The receiving field device interprets this signal and adjusts its operating position accordingly.

The general operating process includes:

• Receiving an analog output command from the control system
• Processing the requested output value
• Generating the corresponding current or voltage signal
• Sending the signal to the connected field device
• Allowing the field device to respond proportionally
• Continuously adjusting the output according to the control strategy

This arrangement allows the control system to regulate process equipment smoothly instead of relying on simple switching commands.

Role in Industrial Control Systems

The IC670ALG320 operates at the output side of the automation I/O architecture.

The module does not normally execute the main control program. Instead, it receives commands from the controller and provides the analog output required by the connected field equipment.

Industrial Applications

The IC670ALG320 can be used in industrial automation systems where analog output signals are required to regulate equipment.

Analog output is especially useful in applications where the field device must be positioned or controlled across a continuous operating range.

Installation and System Integration

Proper installation of the IC670ALG320 is important because analog output signals can be affected by wiring quality, grounding, and the characteristics of the connected field device.

Recommended installation steps include:

• Confirm the IC670ALG320 model before installation.
• Verify compatibility with the existing GE Field Control system.
• Determine the required output signal type.
• Install the module in the designated I/O position.
• Connect the field device wiring correctly.
• Verify signal polarity and terminal assignments.
• Check grounding and shielding arrangements.
• Configure the output channel within the control system.
• Test the output signal before placing the equipment into service.
• Confirm that the field device responds correctly to the output command.

The output wiring should be kept away from high-power cables where possible. Proper shielding and grounding can help reduce unwanted interference in sensitive analog control circuits.

Compatible System Components

The IC670ALG320 is normally used together with other components within a GE industrial automation system.

The complete configuration depends on the type of field equipment being controlled and the requirements of the automation application.

Recommended Alternative Models

When selecting a replacement, the output type, signal range, channel configuration, field wiring, controller compatibility, and system hardware generation should be checked carefully. Similar-looking analog output modules may have different electrical characteristics.

Key Advantages

• Supports current and voltage source analog outputs
• Provides proportional control signals
• Suitable for GE Field Control automation systems
• Interfaces controllers with analog field equipment
• Supports continuous process adjustment
• Suitable for valve and actuator control
• Compact 121.8 × 45.3 × 87 mm dimensions
• Lightweight 0.25 kg construction
• Suitable for industrial control cabinet installation
• Supports modular automation architectures
• Useful for process and machine control applications

Technical FAQs

What is the difference between an analog output module and a discrete output module?

A discrete output normally provides a defined ON or OFF state, while an analog output provides a variable electrical signal. The IC670ALG320 is intended for applications where a connected device needs proportional control rather than simple switching.

Which field devices can typically receive an analog output signal?

Depending on the configured signal type and electrical requirements, analog outputs can be used with devices such as control valve positioners, actuators, variable-speed equipment, and other analog command inputs. The receiving device must match the output characteristics of the module.

Why should the output signal type be checked before connecting a field device?

Current and voltage inputs are electrically different interfaces. Connecting a field device to an unsuitable signal type can result in incorrect operation or improper signal interpretation. The module configuration and field device requirements should therefore be verified before commissioning.

What factors should be checked when troubleshooting an incorrect analog output?

The control command, module configuration, output wiring, terminal connections, grounding, signal range, and receiving device should all be checked. Measuring the actual output at the field interface can also help determine whether the problem originates in the control configuration, I/O module, wiring, or field equipment.