Delta ASDA-A3 1.5kW Servo Drive ASD-A3-1521-L — CNC & Robotics Motion Control

The Delta ASDA-A3 1.5kW Servo Drive (ASD-A3-1521-L) is a mid-power AC servo amplifier purpose-built for high-precision motion control in CNC machining, industrial robotics, and automated manufacturing. With 3.1 kHz bandwidth and a 24-bit absolute encoder, it delivers rapid dynamic response, precise multi-axis synchronization, and exceptional torque control. The drive supports advanced E-CAM motion with up to 99 programmable segments, making it ideal for complex coordinated motion applications. Its shared DC-bus design enables energy regeneration across multiple axes, reducing both energy costs and cabinet heat load.

• 3.1 kHz High-Speed Control Loop — Ensures tight trajectory tracking with minimal overshoot for high-speed CNC paths
• 24-bit Absolute Encoder — No need for homing after power loss; maintains precise position data
• E-CAM & 99 Motion Segments — Graphical programming for complex electronic cam, gear, and interpolated motion
• Advanced Vibration Suppression — 5 notch filters + low-frequency vibration suppression protect tooling and workpieces
• System Diagnosis — Real-time monitoring of machine rigidity, damping, and wear condition over time
• Fan Cooling with Built-in Regenerative Resistor — Reliable thermal management for continuous operation
• Multi-Axis DC-Bus Sharing — Share regenerative energy across drives for up to 30% energy savings
• 20% Compact vs. A2 Series — Slimmer profile fits tight multi-axis control cabinets

• CNC milling & turning centers
• Industrial articulated robots (4-axis & 6-axis)
• High-speed pick-and-place systems
• Automated packaging lines
• Semiconductor wafer handling
• PCB drilling & routing machines
• Textile weaving & knitting machines
• Labeling & printing machinery
• Conveyor tracking & synchronized motion

The A3 series offers significantly higher bandwidth (3.1 kHz vs. B3's lower bandwidth), 24-bit absolute encoder as standard, advanced vibration suppression with 5 notch filters, E-CAM motion control, and system diagnostics — making it the premium choice for high-end motion control.

The standard "-L" model supports RS-485, CANopen, and USB. EtherCAT is available on the "-M" variant (ASD-A3-1521-M). Please specify your communication requirement when ordering.

Yes, the ASDA-A3 series is backward-compatible with ECM-A2 servo motors. However, optimal performance is achieved with ECM-A3 series motors.

Multiple ASDA-A3 drives can share a common DC bus, allowing regenerative energy from decelerating axes to be consumed by accelerating axes. This reduces resistor heat dissipation and saves up to 30% electrical energy.

Yes, with forced-air fan cooling and built-in regenerative resistor, the 1.5kW model is designed for continuous industrial operation. Ensure adequate cabinet ventilation for ambient temperatures above 45°C.

Delta ASDA-Soft provides an intuitive graphical interface with a tree-view index for parameter setup, auto-tuning wizards, oscilloscope functions, and E-CAM programming. Free download from the Delta Download Center.

The drive supports STO (Safe Torque Off) through external wiring, overcurrent protection, overvoltage/undervoltage protection, overheating protection, and encoder disconnection detection.

The drive continuously measures mechanical parameters (rigidity, damping coefficient) and stores historical data. Trend analysis enables early detection of bearing wear, coupling misalignment, or lubrication issues before they cause downtime.