Yaskawa SGMGV-20A3C6C Σ-V Series AC Servo Motor
1.8 kW, 20-Bit Encoder, IP67, Holding Brake - New Factory Sealed
Product Overview
The Yaskawa SGMGV-20A3C6C is a 1.8 kW AC servo motor from Yaskawa's Σ-V (Sigma-V) series, specifically designed for high-speed feed axis applications across industrial machinery. Powered from a 200 VAC supply and featuring a 20-bit true absolute serial encoder, this motor delivers high-resolution feedback, IP67 environmental sealing, and an integrated 24V DC holding brake for demanding axis drive applications.
Key Specifications
| Rated Output |
1.8 kW |
| Power Supply Voltage |
AC 200 V |
| Encoder Type |
20-Bit True Absolute Serial Encoder |
| Encoder Resolution |
1,048,576 counts/rev |
| Shaft Configuration |
Straight Shaft with Keyway & Threaded End |
| Holding Brake |
DC 24V |
| Ingress Protection |
IP67 (Standard) |
| Series |
Σ-V (Sigma-V) - SGMGV Type |
| Application |
High-Speed Feed Axis Drive |
20-Bit Absolute Encoder Technology
The 20-bit serial encoder provides 1,048,576 unique position counts per shaft revolution, enabling smoother low-speed motion, tighter position holding, and more accurate contouring on multi-axis interpolation paths. The "true absolute" characteristic retains shaft position data through power interruptions without battery backup, eliminating homing cycles and reducing startup time.
IP67 Environmental Protection
Every SGMGV series motor includes IP67 ingress protection as standard, rated to withstand temporary immersion up to one meter for 30 minutes. This protection level allows installation in high-pressure coolant systems, mist-heavy cutting zones, and wash-down environments without additional enclosures, extending motor life and reducing maintenance.
Holding Brake System
The 24V DC holding brake follows fail-safe architecture: spring-applied engagement with electrical release. The brake automatically engages on power loss, servo alarm, or emergency stop, providing critical safety for vertical axes and gravity-loaded mechanisms. The 24V brake supply integrates easily with standard machine control systems.
Shaft Design Features
The straight shaft includes a machined keyway for positive mechanical drive connection and a threaded end hole for axial retention. This design ensures reliable torque transmission under shock loads and simplifies maintenance in belt-drive arrangements and pulley-mounted applications.
System Compatibility
Designed to operate with Yaskawa Σ-V series servo drives (SGDV amplifier range), this motor forms a matched system with factory-configured recognition and tuning parameters. Compatible with MECHATROLINK-II/III protocols for multi-axis systems, as well as analogue and pulse-train command inputs for standalone applications.
Frequently Asked Questions
What servo drive is compatible with the SGMGV-20A3C6C?
This motor is designed for use with Yaskawa Σ-V series servo amplifiers from the SGDV range, selected to match the 1.8 kW output rating and current requirements.
What does "true absolute" mean for the 20-bit encoder?
True absolute encoders store shaft position information physically within the encoder, allowing immediate position reading on power-up without homing sequences or battery backup requirements.
Can this motor be used without activating the holding brake?
Yes, the brake is a separate function requiring dedicated 24V DC supply. However, for vertical axes or gravity-loaded mechanisms, using the brake provides essential fail-safe holding capability.
How does IP67 protection affect installation and maintenance?
IP67 allows installation in coolant-heavy environments without additional protection, reducing bearing contamination failures and extending motor service life in demanding industrial conditions.
What is the significance of the keyway and threaded shaft end?
The keyway ensures positive torque transmission under high loads, while the threaded end allows axial retention for belt drives and applications requiring secure component positioning.
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