The GYS201D5-RC2 is a 200 W ALPHA5 Smart GYS Series AC servo motor developed for compact motion axes requiring rapid acceleration, precise incremental feedback and a positive keyed mechanical connection.
Its ultra-low inertia rotor supports frequent starts, stops and direction changes. The motor operates at 3000 r/min rated speed and can reach up to 6000 r/min for short-cycle feeding, indexing and positioning applications.
A 20-bit incremental encoder provides high-resolution position and speed feedback to the compatible servo amplifier.
The defining feature of the RC2 configuration is its keyed shaft with a tapped center hole. This makes it different from the keyless GYS201D5-RB2 and better suited to keyed couplings, timing pulleys and compact gear mechanisms.
Key Features
- 200 W rated output
- Ultra-low inertia GYS design
- 20-bit incremental encoder
- 3000 r/min rated speed
- 6000 r/min maximum speed
- Keyed shaft with center thread
- 0.637 N·m rated torque
- Non-brake configuration
Typical Applications
- Timing-belt positioning axes
- Compact indexing mechanisms
- Precision feeding equipment
- Packaging machinery
- Existing ALPHA5 Smart systems
Keyed and Tapped Shaft Configuration
The RC2 shaft configuration provides:
- Positive torque transmission
- Compatibility with keyed couplings
- Secure pulley or gear mounting
- Center-thread retention capability
- Reduced risk of coupling slip
This is the main mechanical difference from the RB2 keyless version.
20-Bit Incremental Encoder
The integrated 20-bit incremental encoder provides feedback for:
- Position control
- Speed regulation
- Repetitive indexing
- Servo-loop tuning
- Smooth low-speed movement
As an incremental encoder configuration, the machine generally requires a homing or position-reference procedure after startup.
Ultra-Low Inertia Performance
The GYS rotor design is optimized for dynamic machine motion.
Benefits include:
- Rapid acceleration
- Rapid deceleration
- Short positioning cycles
- Frequent forward and reverse operation
- Responsive lightweight load control
It is better suited to fast compact axes than applications requiring very high continuous torque.
Speed and Torque Capability
Rated Output
200 W
Rated Speed
3000 r/min
Maximum Speed
6000 r/min
Rated Torque
0.637 N·m
Maximum Torque
1.91 N·m
Maximum torque is intended for temporary acceleration and deceleration and is not a continuous operating value.
Non-Brake Configuration
GYS201D5-RC2 does not include an electromagnetic holding brake.
It is suitable for:
- Horizontal motion axes
- Rotary indexing mechanisms
- Belt-driven axes
- Non-suspended machine loads
For vertical or gravity-loaded applications, the brake-equipped GYS201D5-RC2-B should be evaluated.
No Oil Seal Configuration
The standard GYS201D5-RC2 configuration does not include a shaft oil seal.
Avoid continuous exposure of the shaft area to:
- Cutting oil
- Coolant
- Lubricating oil
- Process liquid
- Heavy contamination
Additional mechanical protection may be required where liquid exposure is unavoidable.
GYS201D5-RC2 vs GYS201D5-RB2
GYS201D5-RC2
200 W
20-bit incremental encoder
Keyed shaft with tapped center hole
No holding brake
GYS201D5-RB2
200 W
20-bit incremental encoder
Straight shaft without key
No holding brake
The principal difference is the mechanical shaft connection.
GYS201D5-RC2 vs GYS201D5-RC2-B
GYS201D5-RC2
No holding brake
Suitable for horizontal axes
GYS201D5-RC2-B
Integrated holding brake
Suitable for stationary load holding
The brake-equipped motor has different length, mass and wiring requirements.
GYS201D5-RC2 vs GYS201D5-HC2
GYS201D5-RC2
20-bit incremental encoder
Keyed and tapped shaft
GYS201D5-HC2
18-bit absolute/incremental encoder
Keyed and tapped shaft
The primary difference is the feedback configuration.
GYS201D5-RC2 vs GYS101D5-RA2
GYS201D5-RC2
200 W
0.637 N·m rated torque
Keyed shaft with center thread
GYS101D5-RA2
100 W
0.318 N·m rated torque
Keyed shaft for the smaller frame
The 200 W motor provides greater continuous and acceleration torque.
Compatible Amplifier
The documented compatible amplifier is:
RYH201F5-VV2
Before replacement, verify:
- Servo amplifier reference
- Motor power cable
- Encoder cable
- Controller command interface
- Shaft key dimensions
- Center-thread dimensions
- Flange mounting dimensions
- Load inertia
- Brake requirement
Matching only the 200 W rating does not confirm complete compatibility.
Legacy Equipment Replacement
When replacing a motor in an existing ALPHA5 Smart system, record:
- Complete motor model
- Amplifier model
- Cable references
- Servo parameters
- Electronic gearing
- Homing procedure
- Coupling position
- Shaft key orientation
A different shaft or encoder version may require mechanical or control-system changes.
Installation Notes
- Disconnect all servo-system power
- Confirm the keyed RC2 shaft configuration
- Use the correct key and coupling
- Check center-bolt thread compatibility
- Align motor and load shafts accurately
- Do not strike the shaft or encoder
- Protect the unsealed shaft area from liquid
- Restore servo parameters
- Test positioning at low speed
FAQ
Q1: What is the rated output of GYS201D5-RC2?
A1: Its rated output is 200 W or 0.2 kW.
Q2: What encoder does it use?
A2: It uses a 20-bit incremental encoder.
Q3: Does this motor include a brake?
A3: No. The brake-equipped version is GYS201D5-RC2-B.
Q4: What is the shaft configuration?
A4: It uses a keyed shaft with a tapped center hole.
Q5: What is its rated speed?
A5: The rated speed is 3000 r/min, and the maximum speed is 6000 r/min.
Q6: What distinguishes it from GYS201D5-RB2?
A6: RC2 has a keyed and tapped shaft, while RB2 has a straight shaft without a key.
Q7: Does it include an oil seal?
A7: No. The standard RC2 configuration does not include a shaft oil seal.
Q8: What amplifier is compatible?
A8: The documented compatible amplifier is RYH201F5-VV2.
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