The ABB YXO126 4890024-UN/2, also cataloged as the YXO126 Armature Overvoltage Monitor Module, operates as a dedicated hardware component for detecting armature overvoltage conditions within ASEA drive control systems.

Model Identification

The YXO126 module is identified by ABB spare designation 4890024-UN/2 and belongs to the ASEA armature monitoring product family. The available data identifies this unit as an Armature Overvolt Monitor used for voltage supervision in industrial drive applications.

Hardware Specifications

Industrial Drive Voltage Monitoring

The ABB YXO126 is designed for monitoring armature voltage conditions within ASEA drive architectures. The module performs electrical supervision of the armature circuit to identify abnormal voltage states and provide monitoring feedback to the associated control system.

ABB industrial drive monitoring modules typically operate as part of coordinated control assemblies where signal integrity, protection logic, and drive feedback functions are managed through dedicated hardware modules. The YXO126 belongs to this type of voltage protection component.

Ordering Information

• 1 x ABB YXO126 4890024-UN/2 Armature Overvoltage Monitor Module
• Module accessories, cables, manuals, and mounting hardware are not included unless specifically listed.

Field Installation Guidelines

Mounting

• Install the module according to the original ASEA drive cabinet configuration.
• Verify mechanical fixing points before applying electrical connections.
• Maintain sufficient clearance from heat-generating components inside the enclosure.

Electrical Connection

• Confirm armature circuit voltage levels before connection.
• Check terminal identification against the system wiring documentation.
• Use appropriate industrial wiring practices for signal and power conductors.

Maintenance

• Inspect connection points for oxidation, looseness, or mechanical damage.
• Verify monitoring behavior during drive commissioning procedures.
• Replace damaged connectors or wiring before returning the system to operation.

Frequently Asked Questions

• What is the main function of the ABB YXO126 module?

The YXO126 functions as an armature overvoltage monitoring module for ASEA drive systems and supervises abnormal voltage conditions in the armature circuit.

• Is the YXO126 a PLC input or output module?

No. The YXO126 is a dedicated drive monitoring component and is not classified as a standard PLC I/O module.

• What ABB system does the YXO126 belong to?

The supplied information identifies the module as an ASEA Armature Overvolt Monitor used in ABB-related drive control equipment.

• Is the ABB YXO126 still manufactured?

The provided information indicates that the YXO126 has been discontinued by the manufacturer.

• Does the module support hot-swapping?

Hot-swapping capability is not specified. Power isolation should be confirmed before removing or installing the module.

• What installation precautions are required?

Installation should follow the original drive cabinet wiring arrangement and include verification of voltage conditions before connection.

• What environmental specifications are available?

Operating temperature and environmental ratings are not provided in the available technical data.

• Can the YXO126 replace other ABB modules directly?

Replacement compatibility depends on the original ASEA drive configuration and should be verified using system documentation.