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International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Encoder Type
24-bit Absolute (Multi-turn)
Payment Terms
L/C,D/A,D/P,T/T,Western Union
Max Speed (Motor Dependent)
6,000 rpm
Freight Charge
For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Control Mode
PT (Pulse Train) / PR (Position Register) / S (Speed) / T (Torque)
International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Encoder Type
24-bit Absolute (Multi-turn)
Payment Terms
L/C,D/A,D/P,T/T,Western Union
Max Speed (Motor Dependent)
6,000 rpm
Freight Charge
For Industrial Equipment (E.G., PLC Modules, Inverters..), Shipping Cost Varies By Package Weight/Volume And Delivery Location. Contact Our Sales Team For A Customized Shipping Solution And Quote
Control Mode
PT (Pulse Train) / PR (Position Register) / S (Speed) / T (Torque)
The Delta ASDA-A3 750W Servo Drive (ASD-A3-0721-L) is a high-performance AC servo amplifier engineered for precision motion control in industrial automation. Featuring a 24-bit absolute encoder (16,777,216 pulses/revolution) and 3.1 kHz bandwidth, it delivers ultra-fast response, precise positioning, and exceptional low-speed stability. Compatible with ECM-A3 series servo motors, this compact drive is 20% smaller than its A2 predecessor and supports single-phase and three-phase 200-230 VAC input. Built-in auto-tuning, vibration suppression, and system diagnostics make it ideal for demanding applications including CNC machining, electronic assembly, packaging, and robotics.
Product Highlights
3.1 kHz High Bandwidth — Ultra-fast response with 40% shorter settling time vs. previous generation
What is the difference between ASDA-A3 and ASDA-A2 series?
The ASDA-A3 offers 3.1 kHz bandwidth (vs. 2.5 kHz on A2), 24-bit absolute encoder (vs. 20-bit incremental on A2), vibration suppression, system diagnostics, and is 20% more compact. The A3 is the next-generation upgrade for higher precision and faster response.
Can the ASD-A3-0721-L operate on single-phase 220V power?
Yes, the 750W model supports both single-phase and three-phase 200-230 VAC input, making it versatile for various installation environments.
Does this drive require an external regenerative resistor?
No, the 750W to 1.5kW models have a built-in regenerative resistor. An external resistor may be added if higher regenerative capacity is needed.
What servo motors are compatible with this drive?
The ASD-A3-0721-L is designed for Delta ECM-A3 series 750W servo motors (both low-inertia and high-inertia variants). It is also backward-compatible with ECM-A2 series motors.
How does the 24-bit absolute encoder benefit my application?
The absolute encoder retains motor position even during power loss, eliminating homing routines after restart. With 16,777,216 pulses/revolution, it provides sub-micron positioning accuracy and smooth low-speed operation.
What communication protocols are supported?
The standard L model supports RS-485, CANopen, and USB. EtherCAT and DMCNET variants are also available separately.
Can the vibration suppression be configured automatically?
Yes, the advanced notch filters can automatically search for resonance frequencies and set optimal attenuation levels, protecting machines from vibration damage without manual tuning.
What is the warranty period?
Standard manufacturer warranty is 12 months from the date of shipment. Extended warranty options are available through authorized distributors.
