Description
Product Parameters
- Model Number: KSD1-32 (Part Number: E93DA113I4B531)
- Manufacturer: KUKA (OEM by Lenze)
- Rated Current: 32 Amps
- Input Voltage: 400V / 480V AC (3-Phase)
- Control System Compatibility: KUKA KR C2 / KR C2 Edition 2005
- Interface: Interbus / Standard KUKA Drive Bus
- Cooling: Integrated Heatsink with Forced Air Cooling
- Country of Origin: Germany
- Weight: 11.46 lbs (5.20 kg)
- Dimensions: 13.78 in x 3.94 in x 9.84 in (35.0 cm x 10.0 cm x 25.0 cm) The KUKA KSD1-32 is a high-power servo drive module specifically designed for the axes of KR C2 industrial robot controllers. Operating as a single-axis drive, it manages the precise movement of the robot’s motors by converting the DC bus voltage into a pulse-width modulated (PWM) AC signal based on commands from the RDW (Resolver Digital Converter). This 32-amp variant is typically utilized for the primary major axes (A1, A2, or A3) of heavy-payload robots, featuring advanced thermal monitoring and regenerative braking capabilities to handle high-inertia movements with millimetric accuracy.

KUKA KSD1-32 E93DA113I4B531

KUKA KSD1-32 E93DA113I4B531

KUKA KSD1-32 E93DA113I4B531
Model Comparison
The KSD1-32 is the high-capacity version within the KSD1 family, offering significantly more current than the KSD1-08 (8A) or KSD1-16 (16A) units used for the smaller wrist axes. While it shares the same physical mounting height as other KSD1 modules, the “32” model features a wider chassis and a more robust power stage to dissipate heat. Compared to the newer KSP (KUKA Servo Pack) used in KR C4 controllers, the KSD1-32 is a standalone single-axis unit that communicates via the older Interbus protocol, making it an essential replacement part for maintaining legacy KR C2 systems.
Operation Tips
- DC Bus Safety: Before removing the module, wait at least 10 minutes after powering off the controller to allow the high-voltage DC bus capacitors to discharge to a safe level.
- Interbus Addressing: Ensure the Interbus “Out” and “In” cables are securely clicked into place; a loose connection in the drive chain will trigger a “General Drive Bus Error” and stop all robot motion.
- Fan Inspection: Regularly check the cooling fan at the bottom of the module for dust buildup, as the 32A model generates significant heat during heavy duty cycles and may overheat if airflow is restricted.
- Axis Configuration: When replacing a drive, verify that the module is assigned to the correct axis (e.g., A1) via the drive bus cabling sequence, as the KR C2 identifies drives based on their physical position in the communication loop.

