ACH550 ABB Manual: A Comprehensive Overview (Updated 12/22/2025)
This manual, updated today (12/22/2025), details the operation and maintenance of ABB ACH550 drives, referencing publication 3AUA0000081823 for complete programming details.
The ABB ACH550 is a versatile and reliable AC drive designed for a wide range of industrial applications. This drive, covered extensively in the ACH550 Users Manual (publication number 3AUA0000081823), offers precise motor control, improving process efficiency and reducing energy consumption.
Available in various models – including the standard ACH550-01 and the ACH550-UH HVAC drives – the ACH550 caters to diverse needs. This manual focuses on the ACH550-01, with cross-references to the dedicated ACH550-UH HVAC Drives Users Manual (3AUA0000004092) for specific HVAC application details.
From basic start/stop functionality to sophisticated speed and torque control, the ACH550 provides a comprehensive solution. Always consult the factory or a local ABB representative for highly technical information and support.
Safety Precautions and Warnings
Critical Safety Information: Before installing, operating, or maintaining the ABB ACH550 drive, thoroughly review all safety precautions outlined in this and related manuals. Always disconnect the ACH550 from incoming line power before performing any maintenance, including insulation resistance measurements. Failure to do so presents a serious electrical hazard.
Incorrect installation or operation can lead to equipment damage, personal injury, or even death. Adhere strictly to all local and national electrical codes. Ensure proper grounding and adherence to input disconnect and bypass procedures (see Supplement 1…550 HP).

Qualified personnel only should handle drive configuration and troubleshooting. Refer to the appropriate user manuals for detailed safety guidelines and warnings specific to your ACH550 model.
ACH550 Drive Versions and Models
The ABB ACH550 series encompasses various drive versions designed for diverse applications. Primarily, the range includes the ACH550-01 drives, serving as a general-purpose solution for a wide array of motor control needs. Additionally, the ACH550-UH HVAC drives are specifically engineered for Heating, Ventilation, and Air Conditioning systems, offering optimized performance and control within these applications.
It’s crucial to consult the correct documentation for your specific model. The ACH550-UH drives require referencing the dedicated ACH550-UH HVAC Drives Users Manual (3AUA0000004092) for detailed instructions and specifications. This ensures proper installation, configuration, and operation tailored to the HVAC application.
3.1 ACH550-01 Drives
The ACH550-01 drives represent a versatile and widely utilized series within the ABB ACH550 family, suitable for a broad spectrum of industrial applications ranging from 1 to 550 HP. These drives are designed for robust performance and reliable motor control. Users can access comprehensive information through the ABB ACH550-01 user manual, available for download, providing detailed guidance on installation, programming, and troubleshooting.
This manual covers essential aspects, including safety precautions, parameter settings, and fault tracing. Remember to always refer to the official documentation for accurate and up-to-date information regarding the ACH550-01 drive’s capabilities and limitations.
3.2 ACH550-UH HVAC Drives
ACH550-UH HVAC drives are specifically engineered for Heating, Ventilation, and Air Conditioning (HVAC) applications, offering optimized control for fans and pumps. These drives, available up to 550 HP, prioritize energy efficiency and precise process management within building automation systems. For detailed instructions and specifications pertaining to the ACH550-UH series, users should consult the dedicated ACH550-UH HVAC Drives Users Manual (publication number 3AUA0000004092).
This specialized manual details unique features and parameters tailored for HVAC control, ensuring optimal performance and integration within building infrastructure. Always prioritize the UH manual for this drive type.

Installation Guidelines
Proper installation is crucial for reliable ACH550 drive operation. Before commencing, carefully review all safety precautions detailed in the manual. Input disconnect and bypass procedures (detailed in supplement 1.;.550 HP) must be strictly followed to ensure safe maintenance and emergency operation.
Mounting considerations include adequate ventilation and protection from harsh environmental conditions. Ensure sufficient space around the drive for cooling and access for maintenance. Always verify that the drive is disconnected from the incoming line power before proceeding with any installation or maintenance tasks, including insulation resistance measurements.
4.1 Input Disconnect and Bypass Procedures
Safe disconnection and bypass are paramount for maintenance and emergencies. The ACH550 requires a dedicated input disconnect, clearly labeled, to isolate the drive from the power source. A bypass procedure, detailed in the ACH550 Input Disconnect and Bypass Supplement (1…550 HP), allows continued operation of the connected load during drive servicing.
This supplement outlines the necessary components and wiring configurations for a safe and effective bypass system. Strict adherence to these procedures is essential to prevent electrical hazards and ensure personnel safety. Always verify complete power isolation before working on the drive or associated equipment.
4.2 Mounting and Environmental Considerations
Proper mounting and environmental control are crucial for reliable ACH550 operation. The drive should be mounted vertically on a clean, flat, and non-combustible surface, ensuring adequate airflow for cooling. Maintain sufficient clearance around the drive for maintenance access and ventilation – refer to the drive’s technical data for specific dimensions.
Environmental factors like temperature, humidity, and dust significantly impact performance. Avoid exposure to direct sunlight, excessive moisture, and conductive contaminants. Operation within specified temperature ranges is vital; exceeding these limits can lead to derating or failure. Consider using protective covers or enclosures in harsh environments.
Start-Up Procedures
Before initial power-up, verify all wiring connections against the approved wiring diagrams, ensuring correct grounding and adherence to local electrical codes. Confirm the input voltage matches the drive’s rating. Crucially, disconnect incoming line power before performing any electrical checks or insulation resistance measurements, as detailed in related documentation.
During the initial power-up, the drive performs a self-test. Observe the control panel display for any fault indications. Following successful self-test, proceed with basic parameter configuration. Refer to the ACH550 Users Manual (3AUA0000081823) for detailed guidance on parameter settings and programming basics to tailor the drive to your application.
5.1 Initial Power-Up and Configuration
Upon initial power-up, the ACH550 drive executes a self-test sequence. Monitor the display panel for any error messages or fault codes, which indicate potential issues requiring immediate attention. Ensure the drive receives the correct voltage before proceeding.
Basic configuration involves setting essential parameters like motor nominal voltage, frequency, and current. Utilize the control panel or communication interfaces for parameter adjustments. Refer to the ACH550 Users Manual (3AUA0000081823) for a comprehensive list of parameters and their functions. For ACH550-UH drives, consult manual 3AUA0000004092.
5.2 Parameter Settings and Programming Basics
The ACH550 drive’s functionality is extensively customizable through parameter settings. These parameters control motor characteristics, speed profiles, and protection features. Programming can be achieved via the control panel, utilizing a straightforward menu structure, or remotely through communication protocols.
Understanding parameter groups is crucial; groups address specific drive functions. The ACH550 Users Manual (3AUA0000081823) provides detailed explanations of each parameter. For ACH550-UH models, refer to manual 3AUA0000004092. Careful parameter adjustment optimizes performance and safeguards the drive and connected motor. Always document changes for future reference and troubleshooting.
Operation and Control
The ABB ACH550 drive offers versatile operation and control capabilities. Basic control modes include speed control, utilizing a reference signal to dictate motor speed, and torque control, directly managing the motor’s torque output. These modes are selectable through parameter settings.

The drive accepts various input signals for speed or torque commands, enabling integration with PLCs or other control systems. Fieldbus adapters (detailed in section 9.1) enhance connectivity. Proper configuration ensures smooth acceleration, deceleration, and precise motor control. Refer to the ACH550 Users Manual for detailed programming instructions and application examples.
6.1 Basic Control Modes
The ACH550 drive primarily features speed control and torque control as its fundamental operating modes. Speed control regulates motor velocity based on an external reference signal, offering straightforward operation for many applications. Torque control, conversely, directly manages the motor’s output torque, ideal for processes demanding precise force.
Additionally, the drive supports scalar control (V/f control) for simpler applications. Selecting the appropriate mode is crucial for optimal performance and is configured via drive parameters. Understanding the characteristics of each mode is essential for effective system integration and achieving desired process outcomes. Detailed programming information is available in the ACH550 Users Manual.
6.2 Speed Control and Torque Control
Speed control within the ACH550 drive utilizes a reference signal to maintain a desired motor speed, adapting to load variations. Torque control, however, prioritizes maintaining a specific output torque, independent of speed – crucial for applications like winding or tension control.
The drive allows switching between these modes based on process requirements. Parameters define acceleration/deceleration rates and torque limits for each mode. Proper tuning is vital; incorrect settings can lead to instability or suboptimal performance. Refer to the ACH550 Users Manual (3AUA0000081823) for detailed configuration guidance and advanced parameter explanations related to both speed and torque regulation.
Maintenance and Troubleshooting

Routine maintenance for the ACH550 drive includes periodic inspection of cooling fans, checking connections for tightness, and verifying proper enclosure cleanliness. Regular preventative measures extend the drive’s lifespan and ensure reliable operation.
Troubleshooting often begins with identifying fault codes displayed on the drive’s control panel. These codes pinpoint potential issues, ranging from overvoltage/undervoltage to motor overload. The ACH550 Users Manual (3AUA0000081823) provides a comprehensive list of fault codes and recommended corrective actions. Before any maintenance or troubleshooting, ensure the drive is safely disconnected from power sources.
7.1 Routine Maintenance Tasks
Regular inspection of the ACH550 drive’s cooling fans is crucial; ensure they are free from dust and debris to maintain optimal heat dissipation. Check all connections – power, control, and communication – for tightness to prevent intermittent faults. Verify the enclosure’s cleanliness, removing any accumulated dust or contaminants that could compromise insulation.
Periodically inspect the drive’s capacitors for signs of bulging or leakage. A visual check of the drive’s internal components can reveal potential issues before they escalate. Document all maintenance activities for tracking and future reference. Following these tasks ensures prolonged, reliable operation of the ACH550.
7.2 Common Faults and Error Codes
Overcurrent faults are frequently encountered, often stemming from motor issues or incorrect parameter settings. Undervoltage faults indicate insufficient supply voltage, requiring investigation of the power source. Overvoltage faults suggest voltage spikes, potentially damaging the drive. Thermal overload warnings signal excessive heat, necessitating fan checks or reduced load.
Error codes provide specific diagnostic information; consult the ACH550 Users Manual (3AUA0000081823) for detailed explanations. Common codes relate to communication failures, reference signal problems, or internal hardware errors. Addressing these promptly prevents further damage and ensures continued operation.

Technical Data and Specifications
The ACH550 drive series accommodates a wide range of applications, spanning 1 to 550 HP (for standard models). Input voltage ratings vary, supporting common industrial power supplies. Output current ratings are dependent on the specific drive model selected. Drive dimensions and weight are crucial for installation planning; refer to the manual for precise measurements.
Detailed specifications, including switching frequencies and efficiency ratings, are available in the comprehensive documentation. The ACH550-UH HVAC drives have separate specifications detailed in manual 3AUA0000004092. Always consult the appropriate datasheet for your specific ACH550 model.

8.1 Input and Output Voltage/Current Ratings
ACH550 drives support a broad spectrum of input voltages, typically accommodating 230V, 400V, and 600V systems. Input phase configurations include three-phase options, ensuring compatibility with diverse power infrastructures. Output voltage ratings are similarly versatile, designed to match various motor requirements.
Output current ratings scale with drive size, ranging from several amps in smaller models to hundreds of amps in larger, 550 HP units. Precise values depend on the specific ACH550-01 or ACH550-UH model. Refer to the drive’s nameplate and the detailed technical documentation for exact voltage and current specifications.
8.2 Drive Dimensions and Weight
ACH550 drive dimensions vary significantly based on the frame size and horsepower rating. Smaller drives, intended for lower power applications (1-15 HP), feature compact footprints, facilitating installation in constrained spaces. Conversely, larger drives (up to 550 HP) possess considerably larger physical dimensions.
Drive weight also correlates directly with power capacity. Lighter models may weigh only a few kilograms, while the heaviest ACH550 units can exceed 100 kilograms. Precise dimensions (height, width, depth) and weight specifications are crucial for mechanical mounting and shipping considerations. Consult the relevant datasheet or the user manual (3AUA0000081823) for detailed measurements.
Option Manuals and Accessories
The ABB ACH550 drive system’s functionality can be expanded through a range of optional accessories and fieldbus adapters. Separate manuals accompany these components, detailing their specific installation, programming, and troubleshooting procedures. Key accessories include relay output extension modules, providing additional I/O capabilities.
Fieldbus adapters – such as those for Profibus, Modbus, or Ethernet – enable seamless integration with various industrial control systems. These adapters require dedicated manuals for proper configuration. Always refer to the documentation delivered with the optional equipment, as it contains critical information not found in the core ACH550 manual (3AUA0000081823).
9.1 Fieldbus Adapters
ABB ACH550 drives support a variety of fieldbus adapters, facilitating communication with diverse industrial networks. These adapters – including options for protocols like Profibus, Modbus, and Ethernet – are crucial for integrating the drive into larger automation systems. Each adapter requires its own dedicated manual, supplied with the hardware.
These manuals detail the specific installation procedures, parameter settings, and troubleshooting steps for each fieldbus type. Proper configuration is essential for reliable communication. Refer to the adapter’s documentation for wiring diagrams, communication parameters, and any specific requirements for your control system. The core ACH550 manual (3AUA0000081823) provides general guidance, but adapter-specific details are paramount.
9.2 I/O Extension Modules
The ABB ACH550 drive’s functionality can be expanded using optional I/O extension modules. These modules provide additional digital and analog inputs/outputs, enhancing the drive’s control and monitoring capabilities. Like fieldbus adapters, each I/O extension module is supplied with its own dedicated installation and programming manual.
These manuals are essential for understanding the module’s specific wiring requirements, parameter settings, and fault-tracing procedures. They detail how to integrate the module with the ACH550 drive and configure its I/O points for your application. The documentation will typically include information on relay output extensions and their programming. Always consult the module’s manual alongside the main ACH550 documentation (3AUA0000081823) for complete instructions.
Insulation Resistance Measurements
Prior to performing insulation resistance measurements on the ACH550 drive, a critical safety precaution must be observed: completely disconnect the drive from all incoming line power sources. This is paramount to prevent electrical shock and damage to the drive’s sensitive electronic components.
These measurements are crucial for assessing the condition of the drive’s insulation and identifying potential ground faults. Refer to the ACH550-UH Users Manual (3AUA0000004092 English) for specific procedures related to the ACH550-UH drive variant. Proper measurement techniques and acceptable resistance values are detailed within the relevant documentation, ensuring accurate and safe testing practices. Always follow the outlined steps meticulously.
User Manual Resources and Documentation
Comprehensive documentation for the ABB ACH550 drive is readily available to support users throughout installation, operation, and maintenance. The primary resource is the ACH550 Users Manual (publication number 3AUA0000081823), providing detailed programming information and technical specifications.
For ACH550-UH HVAC drives, a dedicated Users Manual (3AUA0000004092 English) offers specific guidance tailored to this model. Additionally, separate option manuals are provided with any purchased fieldbus adapters or I/O extension modules, detailing their installation, programming, and fault tracing procedures. ABB also offers local support through representatives and the factory for further assistance and clarification.

