Yaskawa A1000 vs GA800

Overview

For over a decade, the Yaskawa A1000 variable frequency drive (VFD) has served as a reliable workhorse in heavy industry. Known for its robust performance, precise vector control, and exceptional durability, the A1000 was the go-to drive for demanding applications such as cranes, extruders, compressors, and high-torque conveyors.

However, as industrial automation migrates toward smart technologies, Industrial Internet of Things (IIoT) architectures, and higher safety requirements, legacy platforms eventually show their age. To address these demands, Yaskawa introduced the GA800 series. The GA800 is not just an incremental patch to the A1000; it is a complete redesign. Engineered as Yaskawa's modern flagship high-performance drive, the GA800 matches or exceeds all of the A1000’s raw performance benchmarks while introducing integrated wireless configurations, advanced functional safety, significantly smaller footprints, and smarter installation methodologies.

For system integrators, maintenance engineers, and plant managers evaluating replacement parts and new installations, understanding the architectural and functional distinctions between these two platforms is critical. Selecting the correct drive ensures not only system reliability but also maximizes operational efficiency and future-proofs your installation.

Key Differences at a Glance

The transition from the A1000 to the GA800 introduces several clear advantages. While the A1000 relied on external option boards and legacy serial communications, the GA800 integrates modern control protocols, direct drive-to-drive networking, and cloud-enabled setup tools.

Additionally, physical footprint improvements allow engineers to downsize control enclosures, reducing thermal management budgets and space requirements on the factory floor.

Specifications Comparison

Understanding the exact specifications of the A1000 compared to the GA800 is essential for ensuring functional compatibility, electrical safety, and drive capacity compliance during retrofits.

Performance & Capabilities

When evaluating the electrical performance of these two models, control capability is the key technical differentiator. The A1000 was optimized primarily for standard AC induction motors and fundamental permanent magnet (PM) motors. While it delivered solid torque control down to zero speed under closed-loop vector operation with an encoder option card, its ability to run more advanced, energy-efficient motors was limited.

The GA800 introduces Yaskawa's advanced motor control algorithm, capable of driving Induction Motors (IM), Permanent Magnet motors (Surface and Interior PM, SPM/IPM), and Synchronous Reluctance Motors (SynRM). It includes "EZ Vector" control, which allows the drive to automatically tune and control IPM/SPM motors without requiring complex motor parameters or detailed data sheets. Additionally, the GA800 features Maximum Torque Per Ampere (MTPA) control for PM and SynRM configurations, which reduces energy loss by up to 20% compared to typical induction motor setups.

Furthermore, safety features are significantly improved. The A1000 implemented standard Safe Torque Off (STO) under SIL2 / PLd standards. To comply with modern Functional Safety directives (EN ISO 13849-1), systems utilizing the A1000 often required redundant upstream contactors. The GA800 features integrated STO rated to Cat 3, SIL3, and PLe. This allows control system designers to drop auxiliary contactors out of safety designs, saving cost, cabinet space, and wiring complexity.

Programming & Software

The user configuration environment has undergone major changes between these two generations. Programmers setting up the A1000 are familiar with its 5-line standard LCD keypad. This interface required navigating deep parameter hierarchies to change fundamental setpoints. For computer-based commissioning, the older software suite (DriveWizard Industrial) was used, which required dynamic serial-to-USB drivers and specialized hardware connection kits (such as the JVOP-181 card converter).

The GA800 utilizes a high-resolution, multi-lingual graphical display. The keypad includes an integrated micro-USB port that acts as a PC bridge. This allows engineers to plug standard USB cables directly into the drive to power the control board for commissioning without connecting high-voltage 3-phase power. It also operates as a standard flash drive, allowing parameter sets to be imported or exported using standard files.

[Smart Phone (DriveWizard Mobile App)] --(Bluetooth Connection)--> [GA800 Keypad] --(USB Option)--> [PC Connection]

Additionally, the GA800 features wireless connectivity. When fitted with the Bluetooth keypad, technicians can use the free DriveWizard Mobile application on mobile devices to perform diagnostics, modify parameters, and capture trends standing safely outside the arc-flash safety boundary. The application also connects directly to the Yaskawa Drive Cloud, providing mobile parameter backup and quick access to product manuals.

Communication & Networking

Modern networks demand higher bandwidth, ring-topology redundancy, and lower node counts relative to industrial switches. The A1000 used single-protocol option boards, meaning each drive required its own dedicated network adapter card (e.g., SI-EN3 for EtherNet/IP or SI-EP3 for PROFINET). Every A1000 required an IP address and a physical link connection on the network switch.

The GA850 and GA800 lines feature "network sharing," a technology developed to address this problem. With this feature, a single communication option card installed on a master GA800 drive can control up to five individual GA800 drives across a high-speed internal RS-485 loop.

                    ┌──────────────────┐
                    │ Industrial Switch│
                    └────────┬─────────┘
                             │  EtherNet/IP or PROFINET
           ┌─────────────────▼─────────────────┐
           │ GA800 Drive #1 (Network Master)   │
           └─────────────────┬─────────────────┘
                             │  RS-485 Network Sharing Loop
         ┌───────────────────┼───────────────────┐
         ▼                   ▼                   ▼
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ GA800 Drive #2  │ │ GA800 Drive #3  │ │ GA800 Drive #4  │
└─────────────────┘ └─────────────────┘ └─────────────────┘

This configuration saves on installation costs, reduces physical switch port counts, and minimizes IP address requirements. Additionally, GA800 modern Ethernet option cards support embedded ring topologies (Device Level Ring / DLR for EtherNet/IP and MRP for PROFINET), enabling daisy-chain network connections that eliminate the need for centralized external switches.

Pricing & Lifecycle

The lifecycle status of components plays a key role in purchasing decisions for plants with legacy systems. The Yaskawa A1000 series is classified as a legacy/mature product. While Yaskawa and authorized distributors continue to support the A1000, components can carry legacy pricing premiums. Spare parts, terminal blocks, power cards, and direct replacements for the A1000 will become increasingly difficult to locate and source at standard pricing profiles over the next decade.

In contrast, the GA800 is globally active, under full-scale production, and receives regular firmware updates. Its production volume means it is priced competitively compared to sourcing replacement parts for an aging A1000. For new systems, installing a GA800 guarantees standard manufacturer-backed support and component availability for at least the next 15 to 20 years.

For facilities stocking spares, migrating the primary storeroom database from the A1000 to the GA800 helps lower stock budgets. The GA800 can replace legacy assemblies, reducing the need to maintain duplicate hardware inventories for older machines.

When to Choose Each

Choose the Yaskawa GA800 when:

• Building New Automation Systems: Essential for any new engineering design to ensure maximum support lifecycle, modern safety compliance, and access to new software features.
• Using Advanced Motor Technology: Recommended when using Synchronous Reluctance Motors (SynRM) or PM motors to achieve high energy efficiency.
• Space is Limited: Ideal when fitting a drive into a small enclosure; its physical size reduction and zero-clearance side-by-side mounting maximize power density.
• Integrating Modern Network Safety: Crucial when the safety architecture must meet SIL3 or PLe without the safety margins, relays, or mechanical wear-and-tear of line contactors.
• Enabling Smart Maintenance (IoT): Necessary for facilities requiring remote diagnostics, Bluetooth communication, cloud parameters, or advanced digital monitoring.

Choose the Yaskawa A1000 when:

• Performing Direct, Drop-In Replacements: Best when replacing an existing A1000 on a critical system where wiring configurations, PLC communication links, mounting patterns, or system documentation cannot be changed.
• Operating in Validated Environments: Critical for systems with validated processes (like pharmaceutical or highly regulated defense plants) where any component change requires formal, expensive re-validation.

Migration & Upgrade Path

Migrating from an A1000 to a GA800 is a straightforward process, as Yaskawa designed the GA800 with direct legacy migration in mind.

┌─────────────────────────────────┐
│       Identify Old A1000        │
│  (Obtain model & serial plate)  │
└────────────────┬────────────────┘
                 │
                 ▼
┌─────────────────────────────────┐
│  Match GA800 Rated Current/Volts│
│ (Confirm Heavy Duty requirements)│
└────────────────┬────────────────┘
                 │
                 ▼
┌─────────────────────────────────┐
│  Use Transition Mounting Plates │
│   (Compensate for minor changes)│
└────────────────┬────────────────┘
                 │
                 ▼
┌─────────────────────────────────┐
│   Convert Parameter File via    │
│    DriveWizard Software/Keypad  │
└─────────────────────────────────┘

When upgrading, use the following guidelines:

1. Sizing and Selection Matching: Check the output current rating of your legacy A1000. While the GA800 features high power density, match the drives based on maximum output current (Amps) rather than just Horsepower (HP) ratings to ensure compatibility, especially for dual-duty configurations (Heavy Duty vs. Normal Duty).
2. Mechanical Adaptation: Because the GA800 is significantly smaller than the A1000, its mounting bolt patterns differ. Yaskawa offers mechanical transition plates that install directly onto the footprint of the old A1000, allowing the smaller GA800 to mount using the original bolt holes. This avoids physical modification of the enclosure backplate.
3. Power and Control Wiring: The power terminals on both drives are located in similar locations (line inputs at the top, motor outputs at the bottom). Control wiring terminals feature a similar configuration, though the terminal block is removable. The GA800 features a removable, spring-loaded terminal board which simplifies wiring tasks.
4. Parameter Conversion: Parameter conversion is easy. Open Yaskawa's DriveWizard software, load the original A1000 backup file, select "Model Conversion," and specify the corresponding GA800 model. The software automatically maps parameters, register offsets, and digital I/O structures to the new configuration.

Frequently Asked Questions

can I import my old Yaskawa A1000 configuration file directly into a GA800?

You cannot load an A1000 .dwg configuration file directly into the GA800 using a USB drive. You must first open the configuration in Yaskawa’s DriveWizard software tool, select the parameter conversion function, and convert the file format. This process ensures all parameter mappings align with the GA800 firmware.

Are transition plates available to mount the GA800 in place of an A1000?

Yes. Yaskawa provides a selection of adapter plate kits. These kits mount directly into the mounting holes of the legacy A1000, allowing you to install the smaller GA800 chassis without drilling new holes in the panel backplate.

Does the GA800 require an external control power supply to configure parameters?

No. You can configuration parameters using your PC or laptop. Simply connect a standard micro-USB cable directly to the GA800 keypad. The USB connection provides 24 VDC to power the control card and keypad, allowing you to configure parameters safely without applying high-voltage line power.

Can I control multiple GA800 drives using a single Ethernet option card?

Yes. Using Yaskawa’s "network sharing" feature, you can configure a single master GA800 with an Ethernet/IP or PROFINET option card and daisy-chain up to five additional GA800 drives together via their integrated Modbus RS-485 connections. This configuration requires only one IP address on your primary PLC network.

Related Articles

• Optimizing Control Cabinet Space with Zero-Clearance GA800 and GA500 VFDs
• Step-by-Step Parameter Conversion: Migrating from Legacy Yaskawa Drives to the GA800
• Understanding Modern Industrial Functional Safety Profiles: From SIL2/PLd to SIL3/PLe