Delta ASDA-A3 750W Premium Servo Drive ASD-A3-0721-L — 24-bit Encoder, 3.1kHz BW
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Highlight
Delta ASDA-A3 750W servo drive
,ASD-A3-0721-L servo drive with 24-bit encoder
,Delta servo drive 3.1kHz bandwidth
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Encoder Type24-bit Absolute (Multi-turn)
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Velocity Loop Bandwidth3.1 KHz
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Input Phase ConfigurationSingle-phase / Three-phase
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Control ModePT (Pulse Train) / PR (Position Register) / S (Speed) / T (Torque)
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Built-in Brake ControlYes (24V DC Brake Output)
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Safety FunctionSTO (Safe Torque Off) Via External Wiring
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Max Speed (Motor Dependent)6,000 Rpm
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Positioning Accuracy±1 Pulse (24-bit Resolution)
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Service Life10+ Years (typical Industrial Environment)
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Firmware UpgradeVia USB & Delta ASDA-Soft Software
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Shipping TermInternational Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
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Freight ChargeFor 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
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Place of OriginChina
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Brand NameDelta
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CertificationIEC/EN 61800-5-1 、UL、CE、RoHS、ISO
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Model NumberASDA-A3
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Minimum Order Quantity1
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Price$350 — $550
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Packaging DetailsOriginal
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Delivery Time3-5Workdays
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Payment TermsL/C,D/A,D/P,T/T,Western Union
Delta ASDA-A3 750W Premium Servo Drive ASD-A3-0721-L — 24-bit Encoder, 3.1kHz BW
Delta ASDA-A3 750W Premium Servo Drive ASD-A3-0721-L — 24-bit Encoder, 3.1kHz BW
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
- 24-bit Absolute Encoder — 16,777,216 pulses/revolution ensures sub-micron positioning accuracy
- Auto-Tuning Wizard — Step-by-step guidance via keypad or software lowers commissioning barriers
- 5-Set Advanced Notch Filters — Up to 5 kHz tunable bandwidth with automatic resonance detection and attenuation
- Low-Frequency Vibration Suppression — Eliminates mechanical shaking without sacrificing response speed
- Compact Design — 20% smaller and shorter than ASDA-A2, saving valuable cabinet space
- Multi-Axis DC-Bus Sharing — Collects regenerative energy and stabilizes DC-bus voltage for energy savings
- System Diagnosis — Measures machine rigidity and damping coefficient; tracks wear condition over time
Specifications
| Model Number | ASD-A3-0721-L |
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| Rated Power | 750 W |
| Input Voltage | Single-phase / Three-phase 200-230 VAC (-15% to +10%) |
| Input Current (3-phase) | 5.01 Arms |
| Input Current (1-phase) | 8.68 Arms |
| Continuous Output Current | 5.1 Arms |
| Peak Output Current | 21.21 Arms |
| Encoder Resolution | 24-bit (16,777,216 p/rev) |
| Bandwidth | 3.1 kHz |
| Control Method | SVPWM |
| Cooling | Natural air circulation |
| Built-in Regenerative Resistor | Yes |
| Communication Interfaces | RS-485 / CANopen / USB |
| Command Sources | External pulse train (PT mode) / Internal parameters (PR mode) |
| Max Input Pulse Frequency | 4 Mpps (Line Driver) / 200 kpps (Open Collector) |
| Electronic Gear Ratio | N: 1-536,870,911 / M: 1-2,147,483,647 |
| Tuning Modes | Auto / Manual |
| Operating Temperature | 0°C to 55°C |
| IP Rating | IP20 |
| Weight | Approx. 1.3 kg |
| Compatible Motors | ECM-A3 series 750W (Low/High Inertia) |
| Dimensions (WxHxD) | Approx. 60 x 155 x 180 mm |
Application Areas
- CNC machine tools & precision engraving
- Electronic component assembly & inspection
- IC packaging & semiconductor handling
- Industrial robotics & articulated arms
- Packaging & labeling machinery
- Textile machinery
- TFT LCD cutting systems
- Gantry processing systems
Frequently Asked Questions
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.
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