Delta ASDA-A3 3.0kW Servo Amplifier ASD-A3-3021-L — Heavy-Duty Industrial Servo
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Highlight
Delta ASDA-A3 servo amplifier
,3.0kW heavy-duty servo drive
,industrial servo motor with warranty
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Encoder Type24-bit Absolute (Multi-turn, Battery-backed)
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Velocity Loop Bandwidth3.1 KHz
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Input Phase ConfigurationThree-phase Only
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Continuous Output (Arms)19.4 A
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Peak Output (Arms)70.71 A
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External Regen ResistorSupported (terminal Provided)
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Max DC-Bus Sharing DrivesUp To 8 Drives Parallel
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Weight2.7 Kg
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Mounting OrientationVertical (wall-mount In Control Cabinet)
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Service Life (Capacitors)7-10 Years (typical, Environment Dependent)
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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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Model NumberASDA-A3
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Minimum Order Quantity1
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Price$650 — $1,000
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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 3.0kW Servo Amplifier ASD-A3-3021-L — Heavy-Duty Industrial Servo
Delta ASDA-A3 3.0kW Servo Amplifier ASD-A3-3021-L — Heavy-Duty Industrial Servo
The Delta ASDA-A3 3.0kW Servo Drive (ASD-A3-3021-L) is the high-power flagship of the A3 series, engineered for heavy-duty industrial motion control applications. Delivering 19.4 Arms continuous output and 70.71 Arms peak current, this robust servo amplifier drives large-inertia loads with precision and reliability. The 3.1 kHz bandwidth and 24-bit absolute encoder ensure uncompromising accuracy in demanding environments such as heavy CNC machining, large-format gantry systems, injection molding, and metal forming. With advanced vibration suppression, multi-axis DC-bus sharing, and comprehensive system diagnostics, the 3kW A3 is the ultimate solution for maximizing throughput and machine uptime in high-value production lines.
Product Highlights
- Industrial-Grade Power — 3.0kW rated, 19.4 Arms continuous, 70.71 Arms peak for heavy-load acceleration
- 3.1 kHz Ultra-Fast Response — Maintains precision even under rapidly changing load conditions
- 24-bit Absolute Encoder — Eliminates homing routines on large, slow-moving axes
- Heavy-Duty Fan Cooling — Active thermal management enables continuous high-power operation
- Advanced Resonance Suppression — 5 auto-tuned notch filters + low-frequency vibration suppression
- Multi-Axis DC-Bus Sharing — Significant energy recovery potential in multi-axis heavy machinery
- E-CAM & 99 Motion Segments — Complex synchronized motion without external PLC programming
- Predictive Maintenance Ready — Tend rigidity and damping data to schedule bearing/lubrication service
Specifications
| Parameter | Specification |
|---|---|
| Model Number | ASD-A3-3021-L |
| Rated Power | 3.0 kW (3,000 W) |
| Input Voltage | Three-phase 200-230 VAC (-15% to +10%) |
| Input Current (3-phase) | 20.05 Arms |
| Continuous Output Current | 19.4 Arms |
| Peak Output Current | 70.71 Arms |
| Encoder Resolution | 24-bit (16,777,216 p/rev) |
| Bandwidth | 3.1 kHz |
| Control Method | SVPWM |
| Cooling | Forced fan cooling |
| Built-in Regenerative Resistor | Yes (internal) + external resistor terminal |
| 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) |
| Tuning Modes | Auto / Manual (wizard-guided) |
| Operating Temperature | 0°C to 55°C (forced cooling required above 45°C) |
| IP Rating | IP20 |
| Weight | Approx. 2.7 kg |
| Compatible Motors | ECM-A3 series 2.0kW / 3.0kW (Medium/High Inertia) |
| Dimensions (WxHxD) | Approx. 85 x 170 x 195 mm |
Application Areas
- Heavy-duty CNC machining centers (milling, turning, grinding)
- Large-format gantry & bridge-type machining systems
- Injection molding machines (clamping & injection axes)
- Metal stamping & forming presses
- Automated guided vehicles (AGVs) with heavy payloads
- Industrial printing & converting machinery
- Textile looms & large weaving machines
- Food & beverage processing lines (mixers, conveyors)
- Material handling & palletizing robots
Frequently Asked Questions
Q1: What makes the 3kW A3 suitable for heavy-duty applications?
With 19.4 Arms continuous output and 70.71 Arms peak current capability, the 3kW drive handles large inertia loads and rapid acceleration/deceleration with ease. The forced-air cooling and external regenerative resistor support ensure thermal stability under continuous high-power operation.
Q2: Can an external regenerative resistor be added?
Yes, the ASD-A3-3021-L has a built-in regenerative resistor and an external resistor terminal. For applications with frequent deceleration of large inertia loads, an external high-capacity regenerative resistor is recommended.
Q3: What is the recommended motor for this drive?
The drive is optimized for Delta ECM-A3 series 2.0kW or 3.0kW servo motors (medium or high inertia). For heavy-duty applications, the high-inertia variant provides better load-to-motor inertia matching.
Q4: How many drives can share a common DC bus?
Up to 8 drives can share a common DC bus on the A3 series. This is particularly beneficial for gantry systems and multi-axis machining centers where energy recovery is significant.
Q5: Does the 3kW model require special electrical installation?
Yes, the 3kW drive requires a three-phase 200-230 VAC supply with appropriate circuit protection (recommended 30A circuit breaker). Proper grounding and shielded motor cables are essential for EMC compliance.
Q6: What types of loads benefit most from the vibration suppression features?
Belt-driven axes, long ball screws, cantilevered arms, and flexible couplings benefit significantly. The low-frequency vibration suppression algorithm is specifically designed for mechanically compliant systems that tend to oscillate.
Q7: Can the system diagnosis detect bearing failure?
Yes, by trending the damping coefficient and rigidity measurements over weeks or months, the drive can identify gradual degradation indicative of bearing wear, allowing maintenance to be scheduled before catastrophic failure.
Q8: Is this drive suitable for replacing older Delta A2 or AB series 3kW drives?
Yes, the ASDA-A3 is a direct performance upgrade. It is 20% more compact, offers higher bandwidth, includes advanced vibration suppression and diagnostics, and maintains compatibility with existing A2 motor feedback cables in most configurations.
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