Yaskawa Servo Drive Index

Yaskawa servo drives are a critical component of Motoman robots, responsible for precise axis motion, torque control, and coordinated movement in industrial applications.
This index compiles the most commonly used Yaskawa servo drives, part numbers, applications, and replacement guidance, making it easy for maintenance engineers and procurement teams to identify and source the correct units.

Why Yaskawa Servo Drives Matter

Servo drives form the direct control interface between the robot controller and servo motors, managing:

• Position, velocity, and torque control
• Encoder and feedback-sensor processing
• Safety interlocks and emergency-stop responses

When a servo drive fails, typical consequences include:

• Axis motion errors or instability
• Persistent servo alarm conditions
• Production downtime and reduced throughput

A centralized servo-drive index therefore supports faster diagnostics, accurate spare-parts planning, and minimized operational risk.

Main Categories of Yaskawa Servo Drives

1. Sigma Series Drives (Sigma-5 & Sigma-7)

Yaskawas Sigma series drives are widely deployed in high-performance industrial robots.

Common faults:

• Servo alarm codes (e.g., AL-11, AL-14)
• Axis cannot move
• Overheating or fan failure

2. Mini and Compact Servo Drives

Used in light-duty or compact robots, such as tabletop or small assembly robots:

Failure signs:

• Reduced torque output
• Communication errors with controller
• Overcurrent alarms

3. Multi-Axis & Networked Drives

For robots integrated with multi-axis coordination or fieldbus networks:

Failure signs:

• Multiple axes not responding
• Communication timeout alarms
• Motion synchronization errors

4. Auxiliary & Cooling Modules

To maintain long-term reliability:

Failure symptoms:

• Overheating alarms
• Reduced servo performance
• Audible fan noise or vibration

Signs a Servo Drive Needs Replacement

Consider replacement when the system shows:

• Persistent servo alarms on one or multiple axes
• Axis unable to move despite functional motor and encoder
• Overcurrent, overvoltage, or thermal warnings
• Servo-communication failure reported by the controller
• Visible physical damage to the drive or connectors

Repair vs Replacement Strategy

Board-Level or Module Repair, Appropriate when:

• Possible when only the drive board or communication module is defective
• Maintains existing system investment
• Reduces downtime and cost

Full Servo Drive Replacement, Recommended when:

• Recommended when drive components are heavily damaged or failed beyond repair
• Ensures safety and consistent performance
• Required for critical production environments

Servo Drive Spare Parts by Robot Brand

Different robot manufacturers use dedicated servo drive architectures and compatibility standards.
Select your robot brand below to browse matching servo drive spare parts, improve repair efficiency, and reduce unexpected downtime.

• ABB Servo Drives Explore servo drive units compatible with ABB IRC5 and OmniCore robot controllers.
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• FANUC Servo Drives Find original and replacement servo amplifiers for FANUC R-30iA, R-30iB, and related systems.
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• KUKA Servo Drives Browse KUKA KPP and KSP drive modules designed for KRC2 and KRC4 controller platforms.
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• Yaskawa Servo Drives View Yaskawa servo drive solutions for NX100, DX200, and YRC1000 robot controllers.

Related Yaskawa Index Pages

• Yaskawa Control Boards Index
• Robot Servo Motors & Encoders Index
• Robot Power Supply Units Index
• Robot Communication Boards Index
• Robot Battery Packs & Backup Units Index

These pages together form a complete Yaskawa robot servo and control parts knowledge hub.

FAQ C Yaskawa Servo Drives

Q1: Can Sigma-5 drives be replaced with Sigma-7 drives?

A: No. Sigma-5 and Sigma-7 have different architectures, firmware, and connectors, so replacements must match the exact model.

Q2: Which servo drives fail most often?

A: Overheating, fan failure, or communication errors are the most common causes of drive replacement.

Q3: Are refurbished Yaskawa servo drives reliable?

A: Yes, when professionally tested for functionality, firmware, and cooling performance, refurbished drives are a cost-effective option.

Q4: How do I confirm the correct part number?

A: Verify the drive label, robot series, and motor rating before ordering any replacement.

Reference Notes

This section provides supplementary reference links related to Yaskawa servo system architecture, Sigma series drive classification, and system-level motion control structures.

Referenced materials are intended to support index navigation and structural orientation within the Yaskawa and Motoman drive ecosystem only. They are informational in nature and do not replace official Yaskawa technical documentation, system manuals, or software release notes.

👉 View related Yaskawa & Motion hardware reference articles:

Robot Servo Motor Architecture Overview