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China factory - Shanghai Fradwell Industrial Automation Co., Ltd.

Shanghai Fradwell Industrial Automation Co., Ltd.

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  3. Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter
China Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter
China Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter

  1. China Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter
  2. China Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter

Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter

  1. MOQ： 1
  2. Price： $170 — $260
  3. Get Latest Price
Packaging Details Original
Built-in Brake Output Yes (24V DC brake control)
Series Replacement For ASDA-B (discontinued)
Input Phase Configuration Single-phase / Three-phase
Response Bandwidth 2.5 kHz
Payment Terms L/C,D/A,D/P,T/T,Western Union
Cooling Method Natural convection (no fan)
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
Max Speed (Motor Dependent) 5,000 rpm
Delivery Time 3-5Workdays
Motor Compatibility ECM-E3 / ECM-E2 / ECM-B3
Shipping Term International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Encoder Type 20-bit Incremental
Control Mode PT (Pulse Train) / PR (Position Register) / S (Speed) / T (Torque)
External Regen Resistor Supported (optional terminal)
Certification IEC/EN 61800、CE、RoHS 、ISO
Model Number ASDA-E3
Brand Name Delta
Place of Origin China

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  1. Product Details
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Product Specification

Packaging Details Original Built-in Brake Output Yes (24V DC brake control)
Series Replacement For ASDA-B (discontinued) Input Phase Configuration Single-phase / Three-phase
Response Bandwidth 2.5 kHz Payment Terms L/C,D/A,D/P,T/T,Western Union
Cooling Method Natural convection (no fan) 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
Max Speed (Motor Dependent) 5,000 rpm Delivery Time 3-5Workdays
Motor Compatibility ECM-E3 / ECM-E2 / ECM-B3 Shipping Term International Express（DHL/FEDEX/TNT/UPS/ARAMEX）/Sea Freight / Air Freight / International Special Line
Encoder Type 20-bit Incremental Control Mode PT (Pulse Train) / PR (Position Register) / S (Speed) / T (Torque)
External Regen Resistor Supported (optional terminal) Certification IEC/EN 61800、CE、RoHS 、ISO
Model Number ASDA-E3 Brand Name Delta
Place of Origin China
High Light Delta ASDA-E3 400W servo drive ，low-cost AC servo starter ，economy servo drive with warranty
Delta ASDA-E3 400W Economy Servo Drive ASD-E3-0421-L — Low-Cost AC Servo Starter
The Delta ASDA-E3 400W Servo Drive (ASD-E3-0421-L) is the entry-level workhorse in Delta's economy servo lineup — purpose-built for cost-sensitive industrial automation applications that demand reliable performance without unnecessary complexity. Inheriting the proven response characteristics of the ASDA-B3 series, the E3 delivers 2.5 kHz bandwidth with simplified wiring and a streamlined interface for fast commissioning. Supporting both single-phase and three-phase 200-230 VAC input and compatible with ECM-E3, ECM-E2, and ECM-B3 motors, this compact 400W drive is the ideal choice for simple point-to-point positioning, conveying, and feeding applications where budget matters as much as performance.
Product Highlights
  • 2.5 kHz High Response Bandwidth — Settling time reduced by 13% vs. previous generation for snappy positioning
  • 25% More Compact Design — Saves valuable control cabinet space compared to older B/A series models
  • 5-Set Auto-Tuning Notch Filters — Automatically searches and suppresses mechanical resonance up to 5,000 Hz
  • Simplified Wiring — Streamlined I/O interface reduces installation time and wiring errors
  • Broad Motor Compatibility — Works with ECM-E3, ECM-E2, and ECM-B3 series motors for flexible system design
  • RS-485 & Analog Control — Standard communication interfaces for integration with most PLCs and motion controllers
  • Pulse Train (PT) Position Mode — Supports up to 4 Mpps line driver input for precise step control
  • Energy-Efficient Natural Cooling — Fanless design reduces maintenance and noise in light-duty applications
Specifications & Models
Parameter Specification
Model Number ASD-E3-0421-L
Series ASDA-E3 (Basic Economy Type)
Rated Power 400 W
Input Voltage Single-phase / Three-phase 200-230 VAC (-15% to +10%)
Input Current (1-phase) Approx. 4.6 Arms
Input Current (3-phase) Approx. 2.7 Arms
Continuous Output Current Approx. 2.6 Arms
Peak Output Current Approx. 10.6 Arms
Encoder Resolution 20-bit incremental (1,048,576 p/rev)
Response Bandwidth 2.5 kHz
Control Method SVPWM
Cooling Natural air circulation (fanless)
Built-in Regenerative Resistor No (external resistor supported)
Communication Interfaces RS-485 / Modbus
Command Sources External pulse train (PT mode) / Internal register (PR mode)
Analog Input Speed & Torque control via ±10V analog
Max Input Pulse Frequency 4 Mpps (Line Driver) / 200 kpps (Open Collector)
Tuning Modes Auto / Manual / Quick Setup
Operating Temperature 0°C to 55°C
IP Rating IP20
Weight Approx. 0.84 kg
Compatible Motors ECM-E3 (100W-400W), ECM-E2, ECM-B3
Dimensions (WxHxD) Compact chassis (approx. 55 x 145 x 155 mm)
Application Areas
  • Simple conveyor belt positioning & speed control
  • Automatic feeding & material handling systems
  • Labeling & date-coding machines
  • Small packaging machinery
  • Pick-and-place stations (low-to-medium speed)
  • Cut-to-length & simple cutting machines
  • Tension control winders & unwinders
  • Educational & training automation equipment
  • Printing press auxiliary axes
Frequently Asked Questions
Q1: What does "E3" mean in the ASDA-E3 series?
The "E" stands for Economy — the E3 is Delta's value-oriented servo series, designed to replace the discontinued ASDA-B series. It offers essential performance at an affordable price point, ideal for straightforward automation tasks.
Q2: Does the 400W E3 require a braking resistor?
The 400W model does not include a built-in regenerative resistor. For applications with frequent deceleration or vertical loads, an external regenerative resistor can be connected to dissipate excess energy.
Q3: Can I use ECM-B3 motors with the E3 drive?
Yes, the ASDA-E3 series is fully compatible with ECM-E3, ECM-E2, and ECM-B3 series servo motors, giving you flexibility in motor selection based on availability and performance needs.
Q4: What is the maximum cable length between drive and motor?
Delta recommends motor power cables up to 20 meters and encoder cables up to 20 meters. For longer runs, contact technical support for cable selection guidance to avoid signal degradation.
Q5: Is the E3 series suitable for CNC positioning?
Yes, the E3 supports pulse train input (PT mode) at up to 4 Mpps, making it compatible with most CNC controllers that output step/direction or CW/CW pulse signals. It's well-suited for 2-3 axis low-to-medium precision CNC applications.
Q6: What software is used to configure the E3 drive?
Delta ASDA-Soft provides a user-friendly graphical interface for parameter configuration, auto-tuning, and real-time monitoring via USB connection. Free download from the Delta Download Center.
Q7: How does the E3 differ from the B3 series?
The E3 is a cost-optimized version of the B3, with simplified I/O, fewer advanced motion functions, and a lower price point. It retains the same 2.5 kHz bandwidth and motor compatibility. Choose B3 if you need advanced features like EtherCAT or full-closed-loop control.
Q8: Is the drive suitable for 24/7 continuous operation?
Yes, with its fanless natural cooling design and rated operating temperature up to 55°C, the 400W model is reliable for continuous-duty applications within its rated load. Ensure adequate cabinet ventilation.

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  • Shanghai Fradwell Industrial Automation Co., Ltd.
  • No. 168, Chengnan Road, Pudong New Area, 201399 Shanghai, China
  • https://www.industrial-automationcontrol.com/

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