Kollmorgen / Pacific Scientific 121-236 Motor Controller Power Unit

The Kollmorgen/Pacific Scientific 121-236 is an SC750 series motor controller power unit engineered for industrial automation systems demanding precise, drift-free servo motor control. This digital position controller integrates resolver feedback with full digital motion control capabilities, delivering stable performance in rugged manufacturing environments.

## Technical Specifications

• **Input Power:** 230 VAC, 3-Phase, 50/60 Hz
• **Current Rating:** 30 A continuous, 60 A peak, 29 A FLA
• **Feedback:** Rugged single resolver feedback
• **Function Code:** Position controller with resolver (Function 5)
• **Motor Compatibility:** Brushless servo motors rated 4.8 lb-in to 451 lb-in continuous torque; 10 lb-in to 800 lb-in peak torque
• **Weight:** Approximately 45 lbs
• **Packed Dimensions:** 20″ × 20″ × 20″ (estimated)

## Key Features

• Full digital control with resolver feedback eliminates drift across industrial temperature and vibration environments
• Total front access design streamlines installation and field maintenance
• Single resolver input provides rugged, proven feedback topology for demanding applications
• Digital precision motion control paired with analog-equivalent reliability
• Supports broad torque range via Pacific Scientific brushless servo motor integration

## Typical Applications

Positioning and motion control in factory automation, machine tools, material handling, and process equipment where resolver-based feedback and 3-phase power availability are standard.

## Compatibility & Integration

Designed for operation with Pacific Scientific brushless servo motors within the SC750 platform. The 121-236 accepts resolver feedback and drives motors across the full torque range of the Pacific Scientific brushless servo line. Integration with broader automation networks depends on external interface architecture and communication modules not detailed within this unit’s specification set.