The Pacific Scientific LA23GCKX-P500A is a high-performance digital servo controller from the SC900 (Single Axis) series. Engineered for precision motion control, this drive is known for its rugged industrial design and versatility in handling various motor feedbacks. The “LA” designation typically refers to its specialized power stage and control logic, optimized for high-torque applications where positioning accuracy and rapid dynamic response are critical.
Product Specifications
Technical Parameters
- Model Identification: LA23GCKX-P500A
- Manufacturer: Pacific Scientific (Kollmorgen)
- Series: SC900 Single-Axis Servo Drive
- Input Power: 230V AC, Single or Three Phase (50/60 Hz)
- Continuous Output Current: 7.5 Amps (RMS)
- Peak Output Current: 15.0 Amps (RMS)
- Control Modes: Torque, Velocity, and Position Control
- Feedback Support: Resolver (Standard), Encoder, or SinCos (Option dependent)
- Communication Interface: RS-232/RS-485 for configuration; optional plug-in cards for SERCOS or Profibus.
Physical Datasheet
- Dimensions: ~210mm x 75mm x 185mm
- Weight: 2.1 kg (4.6 lbs)
- Country of Origin: USA
- Mounting: Vertical panel mount with integrated heatsink.
- Operating Temperature: 0°C to 50°C.
Application Fields
The LA23GCKX-P500A is predominantly used in high-precision automated machinery:
- CNC Machining: Driving spindle and feed axes for milling and routing.
- Packaging Systems: Synchronized motion for “Flying Cut-off” and “Electronic Camming” tasks.
- Semiconductor Manufacturing: Precise wafer handling and positioning.
- Robotics: Powering multi-axis articulated arms and gantries in automotive assembly.
- Textile Industry: Managing tension and high-speed winding processes.

Product Usage Instructions
- Mounting: Install the drive in a vertical orientation to ensure optimal airflow through the heatsink. Maintain a minimum clearance of 40mm above and below the unit.
- Wiring:
- Power: Connect the L1, L2, and L3 terminals to the 230V source. Ensure a proper ground connection to the PE (Protective Earth) stud.
- Motor: Connect the U, V, and W phases. Use shielded motor cables to prevent EMI.
- Feedback: Plug the resolver or encoder cable into the designated feedback port. Improper feedback wiring is the most common cause of “Runaway” conditions.
- Commissioning: Use the Pacific Scientific Pacific800 (or ServoBASIC Plus) software for setup. You must configure the “Motor ID” parameters to match the connected motor’s thermal and electrical constants.
- Tuning: Utilize the digital auto-tuning feature to establish initial PID gains. Fine-tune the velocity loop to minimize overshoot during rapid acceleration.
- Safety: Ensure the Enable input is wired through a physical safety relay if E-stop functionality is required, as this legacy model does not feature integrated STO (Safe Torque Off).
Q&A – Frequently Asked Questions
Q: Can I use the LA23GCKX-P500A with a motor from a different manufacturer? A: Yes, provided the motor is a permanent magnet synchronous motor (PMSM) and you have the correct electrical data to manually enter into the drive’s parameter set.
Q: What does the “P500A” suffix denote? A: This usually refers to a specific firmware version or a factory-installed option board (such as a specific communication interface or a custom logic configuration).
Q: Where can I get technical manuals or a quote for a refurbished unit? A: For current stock, technical datasheets, and expedited repair services, please visit our Pacific Scientific LA23GCKX-P500A Resource Center.
Product Related News
In 2026, the Pacific Scientific LA23GCKX-P500A remains a staple in the “Maintenance & Repair” (MRO) market. While Kollmorgen has introduced the AKD2G series as a modern successor, thousands of LA23 series drives continue to operate in critical manufacturing lines. To support these legacy systems, specialized service providers are now offering “Component Life Extensions,” which involve replacing aging electrolytic capacitors and updating internal logic fans. This allows factory managers to avoid the high costs of complete system redesigns while maintaining the high positioning accuracy that the SC900 series is famous for. Industry reports indicate that when properly maintained, these drives exhibit exceptional longevity, often exceeding 20 years of continuous service.
