Description
Product Overview
The Kollmorgen SERVOSTAR SP CP306250 is an industrial servo drive/power stage designed for use in motion-control systems. The CP306250 model belongs to the SERVOSTAR SP family and is used with compatible motion controllers and servo motors in demanding industrial and equipment applications.
The referenced listing identifies the unit as a used Kollmorgen SERVOSTAR SP CP306250.
SERVOSTAR SP drives are designed as servo power stages and interface with external control systems through dedicated command and feedback connections. Kollmorgen documentation describes the SP family as a power-stage platform capable of receiving PWM commands and returning current measurement and fault information to the associated controller.

Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Kollmorgen |
| Product Family | SERVOSTAR SP |
| Model | CP306250 |
| Product Type | Servo Drive / Servo Power Stage |
| Continuous Current Class | 6 A* |
| Peak Current Class | 18 A* |
| Logic Power Configuration | External 24 V logic power* |
| Control Interface | PWM command interface |
| Controller Feedback | Current measurement and fault indication |
| Controller Connection | 36-pin mini D-type interface |
| Feedback Interface | External feedback interface board/configuration |
| Application | Industrial motion control |
| Referenced Listing Condition | Used |
*The SERVOSTAR SP ordering code documentation defines the CP3 06 configuration as a 6 A continuous / 18 A peak power-stage class and the 26 configuration as external 24 V logic power. The complete electrical compatibility of an individual CP306250 should still be verified against its nameplate and system documentation before installation.
Key Features
- Kollmorgen SERVOSTAR SP servo drive platform
- Model CP306250
- Industrial servo power-stage design
- PWM command interface
- Current-feedback monitoring
- Drive fault reporting
- External motion-controller integration
- Compatible with system-specific motor feedback configurations
- Suitable for legacy industrial motion-control systems
Kollmorgen documentation describes the SERVOSTAR SP as a power-stage drive that communicates with the associated controller through a standard 36-pin mini D-type connection for PWM commands, current feedback, and fault indications.
Typical Applications
The CP306250 can be encountered in equipment requiring controlled servo motion, particularly legacy systems using the SERVOSTAR SP architecture.
Typical applications include:
- Semiconductor manufacturing equipment
- Industrial automation machinery
- Precision positioning systems
- Motion-control platforms
- Automated production equipment
- Robotics and material-handling systems
- Machine retrofits
- Legacy servo control cabinets
The exact application depends on the external controller, motor-feedback configuration, and system software.
Installation and Replacement
Before replacing an existing servo drive, verify the complete identification of the original unit.
- Confirm the model number CP306250.
- Check the complete product and configuration markings on the drive.
- Verify the required logic-power configuration.
- Confirm the motor current requirements.
- Check the controller interface and cable arrangement.
- Verify the motor-feedback configuration.
- Isolate all incoming electrical power.
- Wait for stored DC-bus energy to discharge according to the equipment safety procedure.
- Use appropriate electrical and ESD precautions.
- Install the drive securely in the designated equipment position.
- Reconnect controller, motor, feedback, and power wiring exactly as documented.
- Perform controlled commissioning before returning the machine to production.
A physically similar SERVOSTAR drive should not automatically be treated as a compatible replacement. Current rating, control configuration, logic power, motor feedback, and controller interface must be matched.
Inspection and Testing
For a used or surplus CP306250, recommended inspection includes:
Visual Inspection
- Verify the Kollmorgen identification.
- Confirm CP306250 model marking.
- Inspect the enclosure for impact damage.
- Check all connectors and terminals.
- Inspect for overheating or discoloration.
- Check mounting points and cooling surfaces.
- Verify that labels and configuration markings are readable.
Functional Testing
Where a compatible test system is available:
- Controlled power-up
- Logic-power verification
- Fault-status check
- PWM command response
- Current-feedback verification
- Motor output test
- Feedback-interface verification
- Controller communication
- Extended operating test under controlled conditions
Servo drives contain hazardous voltages. Testing should be performed by qualified personnel using appropriate electrical safety procedures.
Current Loop Configuration
SERVOSTAR SP documentation describes internal current-loop compensation requirements for certain operating modes. The compensation is matched to the motor and operating configuration, meaning that replacing the drive may require verification of the existing compensation settings.
Before commissioning, retain or document:
- Motor model
- Motor inductance
- Existing drive compensation configuration
- Operating mode
- Controller type
- Feedback hardware
Changing the drive without checking these settings may affect motor-current performance.
Maintenance and Storage
Recommended maintenance practices include:
- Keep ventilation areas clean.
- Inspect connectors periodically.
- Avoid moisture and conductive contamination.
- Check cable connections for looseness.
- Protect the unit from excessive vibration.
- Store spare units in a dry environment.
- Use suitable ESD protection for electronic interfaces.
- Keep complete model and configuration information with the spare part.
For long-term inventory storage, recording the complete drive identification is important because SERVOSTAR SP units may have different current, logic-power, and configuration options.
Frequently Asked Questions
Q: What is the CP306250?
A: The CP306250 is a Kollmorgen SERVOSTAR SP industrial servo drive/power-stage unit.
Q: What does the SERVOSTAR SP drive connect to?
A: The SP platform is designed to interface with an external motion controller and receive PWM commands while returning current and fault information.
Q: What is the current rating?
A: Based on the SERVOSTAR SP ordering-code documentation, the CP3-06-25-0 configuration corresponds to a 6 A continuous and 18 A peak power-stage class. The actual unit nameplate should be checked before use.
Q: Can another SERVOSTAR SP model replace CP306250?
A: Not automatically. Current rating, logic-power configuration, controller interface, motor feedback, and system configuration should all be checked.
Q: Can the unit be tested by simply applying power?
A: A power-on test can verify basic status, but complete functional testing should include the compatible controller, motor configuration, and feedback system.
Identification and Ordering Notes
Before ordering a replacement, verify:
Brand: Kollmorgen
Series: SERVOSTAR SP
Model: CP306250
Product Type: Servo Drive / Power Stage
Where available, also record the complete nameplate configuration, connector arrangement, serial number, and associated motor/controller information.
Suggested eBay Title
KOLLMORGEN CP306250 | SERVOSTAR SP Industrial Servo Drive
