Delta ASDA-E3 750W Economy Servo Drive ASD-E3-0721-L — Simple Motion for Conveyors
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Highlight
Delta ASDA-E3 servo drive
,750W economy servo motor
,servo drive for conveyors
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Encoder Type20-bit Incremental
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Response Bandwidth2.5 KHz
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Input Phase ConfigurationSingle-phase / Three-phase
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Control ModePT / PR / S / T
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Built-in Regen ResistorYes (internal)
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Max Speed (Motor Dependent)5,000 Rpm
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Cooling MethodFan Cooling
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Modbus RTUStandard (RS-485 Port)
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Motor CompatibilityECM-E3 / ECM-E2 / ECM-B3
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Ideal Stepper ReplacementYes — Closed-loop With Auto-tuning
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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、UL、CE、RoHS、ISO
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Model NumberASDA-E3
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Minimum Order Quantity1
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Price$200 — $320
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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-E3 750W Economy Servo Drive ASD-E3-0721-L — Simple Motion for Conveyors
Delta ASDA-E3 750W Economy Servo Drive ASD-E3-0721-L — Simple Motion for Conveyors
The Delta ASDA-E3 750W Servo Drive (ASD-E3-0721-L) is the most popular power rating in Delta's economy servo family, delivering the optimal balance of performance, power, and price for mainstream industrial automation. With 2.5 kHz bandwidth, single/three-phase 220V input flexibility, and full compatibility with ECM-E3/E2/B3 motors, this drive handles a broad range of positioning and speed-control tasks.
From conveyor tracking to packaging machinery and feeder systems, the 750W E3 provides dependable servomotor control with simplified wiring, auto-tuning, and advanced vibration suppression — all at a price point that makes upgrading from stepper motors a clear business decision.
Product Highlights
- 2.5 kHz High Response — 13% faster settling time vs. previous generation for precise stop-and-go motion
- Single or Three-Phase Power — Flexible input configuration adapts to most factory electrical supplies
- 25% Smaller Footprint — Compact design saves panel space for multi-axis machine builds
- 5 Auto-Tuning Notch Filters — Automatically detects and suppresses mechanical resonance for smoother operation
- Pulse + Analog Dual Control — Simultaneously accepts pulse train position commands and analog speed/torque signals
- USB & RS-485 Connectivity — Easy commissioning via Delta ASDA-Soft software or PLC integration via Modbus
- Broad Motor Ecosystem — Compatible with ECM-E3, E2, and B3 motors in 400W-750W range
- Proven Reliability — Built on Delta's mature B3 platform with millions of units in global field service
Specifications & Models
| Parameter | Specification |
|---|---|
| Model Number | ASD-E3-0721-L |
| Series | ASDA-E3 (Basic Economy Type) |
| Rated Power | 750 W |
| Input Voltage | Single-phase / Three-phase 200-230 VAC (-15% to +10%) |
| Input Current (1-phase) | Approx. 8.7 Arms |
| Input Current (3-phase) | Approx. 5.0 Arms |
| Continuous Output Current | Approx. 5.1 Arms |
| Peak Output Current | Approx. 21.2 Arms |
| Encoder Resolution | 20-bit incremental (1,048,576 p/rev) |
| Response Bandwidth | 2.5 kHz |
| Control Method | SVPWM |
| Cooling | Fan cooling |
| Built-in Regenerative Resistor | Yes (internal) |
| Communication Interfaces | RS-485 / Modbus / USB |
| Command Sources | External pulse train (PT mode) / Internal register (PR mode) |
| Analog Input | Speed & Torque via ±10V analog |
| Max Input Pulse Frequency | 4 Mpps (Line Driver) / 200 kpps (Open Collector) |
| Electronic Gear Ratio | Programmable N/M ratio |
| Tuning Modes | Auto / Manual / Quick Setup wizard |
| Operating Temperature | 0°C to 55°C |
| IP Rating | IP20 |
| Weight | Approx. 1.3 kg |
| Compatible Motors | ECM-E3 750W, ECM-E2, ECM-B3 (400W-750W) |
| Dimensions (WxHxD) | Approx. 60 x 155 x 180 mm |
Application Areas
- Conveyor belt speed synchronization & positioning
- Automatic screw feeding & sorting systems
- Rotary indexing tables & turntables
- Basic pick-and-place robotic arms
- Packaging machinery (flow wrappers, cartoners, case packers)
- Filling & dosing machines
- Label application & printing registration
- Simple CNC auxiliary axes (tool changers, pallet changers)
- Wire cutting & stripping machines
- Automated test & inspection equipment
Frequently Asked Questions
Q1: What applications is the 750W E3 best suited for?
The 750W E3 excels in conveyor tracking, rotary indexing, feeding, and simple pick-and-place applications. It's the ideal step up from stepper motors when you need higher speed, smoother motion, and closed-loop accuracy without the cost of premium servo series.
Q2: Can the 750W E3 operate on household 220V single-phase power?
Yes, the 750W model accepts both single-phase and three-phase 200-230 VAC input, making it versatile for both small workshop installations and industrial three-phase environments.
Q3: Does the built-in regenerative resistor need external cooling?
The internal regenerative resistor is designed for typical duty cycles. For applications with frequent high-speed deceleration or large inertia loads, monitor the regenerative load ratio via ASDA-Soft — if it exceeds 80%, add an external resistor.
Q4: How many digital I/O points are available?
The E3 series provides a streamlined I/O set compared to the B3/A3: typically 5 digital inputs (configurable) and 3 digital outputs, plus 2 analog inputs. This covers most basic positioning and speed-control needs.
Q5: Can I control the E3 drive via Modbus RTU from a PLC?
Yes, RS-485 Modbus RTU is standard. You can read/write parameters, monitor status, and even command position/speed moves directly from a PLC or HMI over the Modbus interface.
Q6: Is this a good replacement for older Delta ASDA-B series drives?
Yes — the ASDA-E3 was specifically designed as the direct replacement for the discontinued ASDA-B series. It offers higher bandwidth (2.5 kHz vs. 0.5 kHz), 25% smaller size, and improved vibration suppression while maintaining similar wiring and control interfaces.
Q7: What is the factory default pulse input type?
Factory default is Pulse + Direction (Line Driver). This is configurable to CW/CCW pulse or A/B quadrature phase via parameter P1-00. Always verify your controller output type before wiring.
Q8: Does Delta provide CE-certified motor cables for the E3?
Yes, Delta offers pre-assembled shielded motor power and encoder cables in standard lengths (3m, 5m, 10m, 20m) with CE-compliant connectors. Using genuine Delta cables ensures EMC compliance and reliable encoder communication.
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