GYS101D5-HA2 Fuji Electric ALPHA5 Smart Servo Motor 100W 18-Bit ABS Encoder

The GYS101D5-HA2 is a 100 W ultra-low inertia AC servo motor from the Fuji Electric ALPHA5 Smart GYS Series, designed for compact automation systems requiring high positioning accuracy and fast dynamic response.

Unlike standard small servo motors using basic incremental feedback, this model integrates an 18-bit absolute encoder to provide high-resolution position feedback for precision motion applications.

The ultra-low inertia rotor enables rapid acceleration and deceleration, while the compact 100 W design makes it suitable for small mechanical axes where response speed, repeatability and installation space are critical.

The HA2 configuration features a straight shaft without key and does not include a holding brake, making it suitable for lightweight horizontal motion systems.

Key Features

• 100 W compact servo motor
• ALPHA5 Smart GYS Series
• Ultra-low inertia rotor design
• 18-bit absolute encoder
• 3000 r/min rated speed
• 5000 r/min maximum speed
• Keyless straight shaft
• High-response positioning performance

Typical Applications

• Semiconductor equipment
• Precision assembly machines
• Pick-and-place mechanisms
• Inspection systems
• Compact robotic axes

18-Bit Absolute Encoder Advantage

The biggest difference of GYS101D5-HA2 is the absolute encoder configuration.

The 18-bit ABS encoder provides:

• High-resolution position detection
• Accurate motion feedback
• Improved positioning repeatability
• Position information retention according to system configuration

Compared with incremental encoder versions, absolute feedback simplifies machine restart procedures and improves precision control in demanding applications.

Ultra-Low Inertia Motion Performance

The GYS series uses a low-inertia rotor design optimized for dynamic motion.

Advantages include:

• Faster acceleration
• Faster deceleration
• Reduced positioning cycle time
• Better response to command changes
• Smooth repeated operation

It is designed for applications requiring frequent short-distance movements.

Keyless Shaft Design

The HA2 configuration uses a straight shaft without key.

Advantages:

• Compact mechanical integration
• Suitable for clamp-type couplings
• Reduced mechanical complexity
• Flexible machine design

The coupling should be selected according to the shaft specification and load requirements.

No Holding Brake Configuration

GYS101D5-HA2 does not include an integrated holding brake.

Recommended for:

• Horizontal axes
• Rotary positioning systems
• Lightweight mechanisms
• Machines without gravity load

For vertical applications requiring position holding, the brake-equipped HA2-B version should be selected.

GYS101D5-HA2 vs GYS101D5-HA2-B

GYS101D5-HA2

100 W

18-bit absolute encoder

No brake

GYS101D5-HA2-B

100 W

18-bit absolute encoder

Integrated holding brake

The main difference is the holding brake option.

GYS101D5-HA2 vs GYS101D5-RA2

GYS101D5-HA2

18-bit absolute encoder

Keyless shaft

GYS101D5-RA2

20-bit incremental encoder

Keyed shaft

They are designed for different feedback and mechanical connection requirements.

GYS101D5-HA2 vs GYS101DC1-CB

GYS101D5-HA2

ALPHA5 Smart generation

18-bit absolute encoder

GYS101DC1-CB

Previous generation configuration

Incremental encoder

The D5 series provides updated feedback performance and system compatibility.

Installation Notes

Before installation:

• Confirm ALPHA5 Smart amplifier compatibility
• Verify encoder cable type
• Check shaft coupling design
• Confirm brake requirement
• Match load inertia
• Complete servo tuning
• Verify absolute-position setup

FAQ

Q1: What is the rated output of GYS101D5-HA2?

A1: The rated output is 100 W.

Q2: What encoder does this motor use?

A2: It uses an 18-bit absolute encoder.

Q3: Does it include a brake?

A3: No. GYS101D5-HA2 is the non-brake version.

Q4: What is the rated speed?

A4: The rated speed is 3000 r/min.

Q5: What makes this model different from GYS101DC1-CB?

A5: It uses an ALPHA5 Smart platform with an 18-bit absolute encoder instead of a standard incremental feedback configuration.

Q6: What is the shaft type?

A6: It uses a straight shaft without key.

Q7: Is it suitable for precision automation?

A7: Yes. The absolute encoder and low-inertia design make it suitable for precision positioning systems.

Q8: What applications fit this motor?

A8: It is suitable for compact automation equipment requiring accurate and fast motion control.