In long-standing manufacturing plants, legacy ssd drive (Shackleton System Drives) and eurotherm drive lines play a vital role in operating and controlling the speed of AC and DC motor systems.
However, after decades of continuous operation, these outdated eurotherm drive and ssd drive units inevitably begin to develop board faults, power component failures, and display malfunctions. To make matters worse, these product lines have all been officially announced as discontinued or obsolete by the manufacturer, leaving businesses facing the critical risk of extended downtime due to a shortage of genuine replacement parts.
To completely resolve this pain point, Parker Hannifin — the industrial conglomerate that acquired the entire Eurotherm/SSD drive technology portfolio — offers the perfect upgrade and replacement solution. The new generation of Parker drives helps factories achieve stable operation without having to tear down and rebuild the entire electrical cabinet.
The Technical Connection: Legacy SSD Drive / Eurotherm Drive to Modern Parker
For maintenance engineers, changing control brands always comes with the fear of hardware incompatibility or having to rewrite complex PLC logic. However, in the motion and drive industry, ssd drive, eurotherm drive, and Parker Drive actually share the exact same technology “DNA”:
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In the 1970s and 1980s, high-current Thyristor motor speed controllers were developed and dominated the market under the brand name ssd drive.
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Later, the Eurotherm Group acquired this division and commercially rebranded them into the famous eurotherm drive lines.
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Today, all manufacturing facilities, proprietary patents, and engineering teams of both ssd drive and eurotherm drive are owned and developed by Parker Hannifin (commonly known as Parker SSD).
Because they inherit the exact core control algorithms and power terminal layouts, modern Parker Drive lines serve as the ultimate replacement solution for legacy ssd drive and eurotherm drive units.
Direct Cross-Reference Guide: From Legacy SSD/Eurotherm Drive to Modern Parker
When an ssd drive or eurotherm drive in your factory breaks down and cannot be repaired, you can quickly cross-reference the compatible Parker replacement model using the two detailed classification tables below:
1. For Direct Current Motor Controllers (DC Drives)
The ssd drive brand was once dubbed the “king” of heavy-duty DC motor control. If your legacy control panels are running these early analog or digital models, here is your upgrade path:
| Legacy Device to Replace (SSD Drive / Eurotherm Drive) | Equivalent New Generation Parker Drive | Application & Replacement Advantages |
| SSD Drive 540 / 541 / 545 (Small Analog) | Parker 590P (590 Plus) | Ideal for small applications; upgrading to digital provides much more precise field current control. |
| SSD Drive 590A (Analog Series, Grey Enclosure) | Parker 590P (590 Plus) | Direct replacement, migrating from manual potentiometer tuning to smart digital parameter configuration. |
| Eurotherm Drive 590C (Early Digital Series) | Parker 590P (590 Plus) | The most seamless replacement. The physical mounting dimensions and power terminal footprints of the 590P are designed to fit perfectly into the exact space of the old 590C, requiring no cabinet re-drilling. |
| Eurotherm Drive 590 DRV / LINK | Parker 590P + Communication Card | The perfect replacement. |
2. For Alternating Current Inverters (AC Drives)
| Legacy Device to Replace (SSD Drive / Eurotherm Drive) | Equivalent New Generation Parker Drive | Application & Replacement Advantages |
| SSD Drive 584 / 584SV (Heavy-Duty Rugged Line) | Parker AC20 Series | Outstanding heavy-duty AC inverter, replacing old iron-clad enclosures with modern Vector control technology for maximum energy savings. |
| Eurotherm Drive 601 / 605 / 620 Standard | Parker AC10 or Parker AC20 | Smoothly replaces legacy V/F or vector control inverters, offering a much more user-friendly programming interface. |
| Eurotherm Drive 620L (Vector Link) | Parker AC20 Series | Ensures seamless maintenance of the synchronized speed control system over the legacy communication network. |
| SSD Drive 650 / 650V (Small Plastic Enclosure) | Parker AC10 Series | Equally compact design, optimizing initial investment costs. |
| Eurotherm Drive 690P (Premium Closed-Loop Line) | Parker AC30 Series | The “Gold” replacement solution. The Parker AC30 series perfectly inherits the specialized torque and tension control algorithms of the 690P, ideal for winding/unwinding applications in paper, steel, and textile industries. |
Why Choose a Replacement Over Repairing an Outdated SSD Drive or Eurotherm Drive?
Many businesses opt to repair or reinforce control boards when an ssd drive or eurotherm drive trips or faults to save immediate costs. However, this approach carries massive hidden risks:
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Genuine Spare Parts are Completely Depleted: Critical components and specialized processors for a eurotherm drive manufactured in the 1990s or 2000s are virtually non-existent on the market. Repairs rely mostly on old “salvaged/refurbished” parts with a very short lifespan.
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Risk of Repetitive and Extended Factory Downtime: Patching a fault temporarily on a legacy ssd drive today might lead to another failure on a different part of the board just a few weeks later. The economic losses incurred when a production line stops abruptly are far greater than the cost of a brand-new drive upgrade.
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Superior Technical Upgrade: Upgrading to modern Parker lines (such as the DC590P or AC30) grants you high-speed microprocessors with instantaneous current loop feedback for enhanced motor protection. Furthermore, new drives fully support modern industrial communication protocols like Profinet, EtherCAT, Ethernet/IP, and Modbus TCP/IP — features that original legacy ssd drive or eurotherm drive units simply cannot provide.
Safe and Fast 4-Step Retrofitting Process
To ensure that the “revival” of your legacy electrical cabinet goes smoothly without any wiring short-circuits or component damage, the engineering team must strictly follow a standard technical procedure:
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Site Survey and Legacy Parameter Retrieval: Record the exact model code of the old ssd drive or eurotherm drive to determine the current rating (Amps), supply voltage, armature control type (2-Quadrant or 4-Quadrant regenerative), and speed feedback method (Tacho or Encoder).
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Parameter Configuration Backup: Extract the existing configuration file from the old drive to a computer using specialized software (if the old unit can still power up), or manually copy down all essential parameters (Macros, Control I/O mapping, motor nameplate data).
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Physical Swapping and Parker Drive Wiring: Dismount the obsolete ssd drive / eurotherm drive. Mount the new Parker drive in its place. Proceed to re-terminate the motor leads, field wiring, main power lines, and control I/O.
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Configuration, Autotune, and Commissioning: Use Parker DSELite software to download the converted configuration into the new drive. Perform un-coupled no-load testing and trigger the motor Autotune routine to optimize drive-motor synchronization before officially bringing the production line online with full load.
Conclusion & Turnkey Retrofitting Solutions
Transitioning from obsolete ssd drive and eurotherm drive systems to next-generation Parker solutions is a strategic move that helps your business master modern technology, minimize operational risks, and keep your production lines running smoothly 24/7.
We take pride in being an authorized distributor of genuine PARKER replacement drives for legacy ssd drive and eurotherm drive systems in Vietnam. Backed by an experienced team of automation engineers, we are fully equipped to handle site surveys, data backups, and complete turnkey conversions directly at your factory.
Contact our hotline (whatsapp) immediately at +84 908353714 or send the model number of the ssd drive or eurotherm drive you need to replace to our email at info@kythuatviet.vn to receive an optimized quote and free technical consultation today!
