Description
Core Product Summary
The Harmonic Drive FPA-32-33 is a configuration designation associated with an AC servo actuator designed for compact, precision motion-control applications. The FPA family integrates an AC servo motor with a precision planetary gear reducer, reducing the overall axial space required compared with certain motor-and-reducer arrangements.
The exact configuration should be identified from the complete nameplate code. In Harmonic Drive’s FPA nomenclature, frame size, reduction ratio, motor winding, feedback system, and brake options affect the actuator’s operating characteristics and compatibility. A model description ending at “FPA-32-33” does not establish all of these details.
For replacement procurement, compare the complete part number, mechanical mounting, output interface, motor feedback, drive compatibility, and required torque and speed. Use the applicable manufacturer documentation for final sizing and commissioning.
Key Technical Specifications
| Parameter | Available information |
|---|---|
| Manufacturer | Harmonic Drive |
| Model designation supplied | FPA-32-33 |
| Product family | FPA AC servo actuator |
| Product type | Integrated AC servo motor and precision planetary gear reducer |
| Frame designation | 32 |
| Ratio designation | Requires confirmation against the complete model code |
| Motor winding | Not established by the shortened model number |
| Feedback device | Not established by the shortened model number |
| Brake configuration | Not established by the shortened model number |
| Rated voltage and current | Confirm using the complete part number and applicable datasheet |
| Output torque and speed | Depend on the exact actuator configuration |
| Mounting dimensions | Confirm from the corresponding mechanical drawing |
Important: Do not use specifications from a different FPA-32 configuration as guaranteed ratings for this unit.
Engineering Selection Highlights
- Integrated actuator design: Combines a servo motor and precision planetary reducer in one assembly.
- Low-profile construction: Intended to reduce overall length in space-constrained machinery.
- Motion-control integration: Requires matching the actuator’s feedback and electrical configuration to the selected servo drive.
- Configuration-sensitive performance: Reduction ratio and motor configuration influence available output torque and speed.
- Replacement verification: The full model code and nameplate are necessary to distinguish mechanically similar but electrically different versions.
FPA-32-33
FPA-32-33FPA-32-33
System Compatibility and Integration Requirements
Before selecting a replacement, verify the following:
| Area | What to check |
|---|---|
| Servo drive | Supported motor and feedback configuration |
| Motor winding | Exact winding code and drive electrical requirements |
| Encoder or resolver | Feedback type, resolution, interface, and connector pinout |
| Brake | Whether the existing actuator has a holding brake and its required supply |
| Mechanical interface | Mounting pattern, shaft or flange, coupling, and available clearance |
| Motion profile | Required continuous torque, peak torque, speed, and acceleration |
| Control system | Command interface and feedback handling |
| Cabling | Motor power, feedback, brake wiring, and connector compatibility |
The FPA product family has been documented for use with compatible servo-drive systems, but compatibility should be established for the specific actuator code and drive model rather than inferred from the family name alone.
Dimensions, Mounting, and Connection Notes
The exact dimensions and connection details cannot be confirmed from the shortened designation alone.
During replacement planning:
- Record the full model number from the nameplate, including all letters and suffixes.
- Compare the mounting interface and output-shaft or flange geometry with the existing actuator.
- Verify motor and feedback connector types and pin assignments.
- Check whether a brake is fitted and confirm its electrical requirements.
- Confirm the allowable output torque, speed, and duty cycle from the relevant manufacturer documentation.
- Follow the servo drive manufacturer’s procedures for wiring, parameter setup, and commissioning.
Do not assume that two actuators with the same frame and reduction-ratio designations are interchangeable.
Detailed Product Overview
Integrated motor and reducer
The FPA design integrates a dedicated AC servo motor with a precision planetary gear reducer. This arrangement can simplify packaging compared with a separate motor and an offset or orthogonal reducer arrangement. The actual benefit depends on the machine’s mechanical layout and required motion profile.
Reduction ratio and output performance
The “33” portion of the designation should be checked against the complete model code and the applicable product documentation. Ratio, motor winding, and other configuration choices affect output speed, torque, and drive requirements. Engineers should use the exact configuration’s performance curves and ratings when sizing a replacement.
Feedback and servo-drive matching
The feedback system is a critical part of actuator selection. A resolver-based unit and an encoder-based unit may require different drive hardware, feedback settings, cables, or commissioning procedures. Confirm the feedback designation before ordering or installing the actuator.
Maintenance and replacement
Before replacement, document the original actuator code and drive parameters. Inspect mechanical couplings, mounting surfaces, connectors, and cabling. After installation, follow the manufacturer’s setup procedure and verify direction of rotation, feedback operation, limits, and motion performance before returning the equipment to production.
Applications and System Role
The FPA family is designed for compact servo-driven machinery where controlled rotation, reduced installation space, and precise mechanical transmission are important.
Potential application areas include:
- Industrial automation equipment
- Robotics and positioning mechanisms
- Machine tools
- Semiconductor and flat-panel display manufacturing equipment
- Compact indexing and motion-control assemblies
These are application areas for the FPA family, not confirmation that a particular FPA-32-33 configuration meets every application’s load, accuracy, environmental, or duty-cycle requirements.
Frequently Asked Questions
Q1: What is the Harmonic Drive FPA-32-33?
It is a designation associated with the FPA AC servo actuator family, which integrates a servo motor and precision planetary gear reducer.
Q2: Does FPA-32-33 identify the complete actuator configuration?
Not necessarily. Additional code characters can identify important motor, feedback, brake, or other configuration details.
Q3: Can I replace it with another FPA-32 actuator?
Only after checking the complete model code, mechanical interface, feedback system, electrical requirements, and performance ratings.
Q4: What servo drive is compatible with this actuator?
Compatibility depends on the exact motor winding and feedback configuration. Confirm the full nameplate code against the actuator and drive documentation.
Q5: What are its rated torque and speed?
These values should be taken from the datasheet for the exact configuration. The shortened designation is insufficient to establish guaranteed ratings.
Q6: What information is needed for a replacement quotation?
Provide the complete part number, nameplate photograph, quantity, required condition, and details of the existing servo drive. These help confirm the correct configuration before purchase.
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