YASKAWA YPHT31359-1A Replacement for Sigma-Series Drive

Product Overview

YASKAWA YPHT31359-1A Replacement for Sigma-Series Servo Drive: Smooth Transition & Legacy System Compatibility

The YASKAWA YPHT31359-1A is a servo drive control board designed for the YASKAWA Sigma-Series servo drive platform — one of the most widely deployed motion control systems in precision manufacturing, semiconductor handling, packaging automation, and CNC machining environments worldwide. As original Sigma-Series hardware ages and OEM support windows close, facilities face increasing pressure to source verified replacement boards that maintain full electrical, mechanical, and firmware compatibility with their existing servo infrastructure.

This listing provides a direct replacement and upgrade solution for the YPHT31359-1A control board, sourced from verified supply channels and tested prior to shipment. Whether your facility is dealing with a failed board, a planned preventive maintenance swap, or a phased migration away from end-of-life Sigma-I or Sigma-II drive units, this board supports a smooth, low-risk transition with minimal reprogramming and zero mechanical rework.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful YPHT31359-1A board replacement rarely happens in isolation. In most Sigma-Series servo systems, the control board interfaces directly with the drive’s power stage, feedback circuitry, and upstream controller. During a board-level swap or broader system modernization, engineers commonly address adjacent components to ensure long-term reliability.

On the motor side, the YASKAWA SGMAH and SGMPH series servo motors are the most common actuators paired with Sigma-Series drives. If the motor encoder cable or feedback harness shows wear, replacing it alongside the control board eliminates a common source of post-swap faults. The JZSP-C series encoder cables are the standard interconnect and should be inspected during any board replacement procedure.

For facilities running MECHATROLINK-II motion networks, the upstream YASKAWA SGDH series servo drives or a MP2000-series machine controller may be coordinating axis motion. Verifying that the replacement board’s firmware revision is compatible with the motion controller’s command cycle is a critical pre-commissioning step. In multi-axis cabinets, the JUSP-NS115 MECHATROLINK-II option card is often installed in adjacent drive slots and should be confirmed operational after the board swap.

Power quality at the drive input is another factor. Many Sigma-Series installations include a YASKAWA CIMR-series AC drive or a dedicated servo transformer upstream of the servo amplifier. If the original board failure was caused by voltage transients or DC bus instability, inspecting the input filter capacitors and the regenerative resistor unit (such as the YASKAWA ERF series braking resistor) before reinstalling a new control board is strongly recommended.

On the control cabinet side, facilities migrating from older Sigma-I drives to Sigma-II or Sigma-7 platforms often need to update the CN1 I/O terminal block wiring and reconfigure the SigmaWin+ parameter file. The programming cable — typically a JZSP-CVS06-02 USB-to-serial adapter — is required for parameter upload and drive tuning after board installation. Having this cable on hand before the maintenance window begins eliminates a common delay.

For applications where the Sigma-Series drive is embedded in a larger PLC-controlled system — for example, a YASKAWA MP3300 or MP2600 machine controller coordinating multiple servo axes — the motion program itself typically does not require modification after a board-level swap, provided the drive parameters are restored correctly. This makes the YPHT31359-1A an especially low-risk replacement in multi-axis CNC, pick-and-place, and web tension control applications.

Retrofit Guidance FAQ

Q: Do I need to rewire the servo motor or encoder after replacing the YPHT31359-1A board?
A: No. The YPHT31359-1A is a board-level replacement within the existing drive chassis. All external wiring — motor power, encoder feedback, and I/O — connects to the drive’s terminal blocks and connectors, which remain unchanged. No rewiring is required.

Q: Will my existing servo parameters transfer automatically?
A: Parameters are stored on the drive’s internal memory, not on the control board itself in most Sigma-Series configurations. However, it is best practice to back up all parameters via SigmaWin+ before the swap and restore them after installation to confirm correct operation.

Q: Is this board compatible with MECHATROLINK-I and MECHATROLINK-II communication?
A: The YPHT31359-1A supports the standard analog/pulse-train interface native to the Sigma-Series platform. MECHATROLINK compatibility depends on the option card installed in the drive, not the control board. Your existing MECHATROLINK option card remains in place and is unaffected by the board swap.

Q: How much physical space does the replacement require?
A: The YPHT31359-1A is a direct form-factor replacement for the original board within the Sigma-Series drive enclosure. No additional panel space, DIN rail, or cabinet modification is needed.

Q: Can this board be used in a Sigma-7 drive?
A: The YPHT31359-1A is designed for the Sigma-Series (Sigma-I/II generation) drive platform. Sigma-7 drives use a different control architecture and are not compatible with this board. Please confirm your drive model before ordering.

Q: What if the board arrives and does not resolve the fault?
A: Our 12-month warranty covers defective units. If the replacement board does not resolve the drive fault, contact our technical team at [email protected]. We will assist with fault diagnosis and arrange a replacement or refund as appropriate.

Warranty Assurance

Every YASKAWA YPHT31359-1A shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to shipment, each board undergoes a functional inspection to verify physical integrity, connector condition, and component-level quality. We do not ship boards with visible damage, corroded contacts, or missing components.

If a board is found to be defective on arrival or fails within the warranty period under normal operating conditions, we will provide a replacement unit or a full refund — your choice. Our after-sales response target is within 24 hours on business days. For urgent production-line situations, please indicate “URGENT” in your inquiry subject line and contact us directly at +86 18359293191.

We maintain stock of the YPHT31359-1A and related Sigma-Series components in our Xiamen warehouse, enabling fast dispatch for both domestic and international orders. Standard export documentation, including commercial invoice and packing list, is provided with every shipment. For customers requiring a test report or inspection certificate, please request this at the time of order.

TOPNLMS serves industrial maintenance teams, MRO procurement departments, and system integrators across Asia, Europe, and the Americas. Our focus is on hard-to-source, end-of-life, and replacement industrial automation components — delivered reliably, with full traceability and post-sale support.