ASD-B2-0421-B 400W AC Servo Drive 220V 1/3-Phase | Delta

The Original New Delta ASD-B2-0421-B is a 400 W AC servo drive from the ASDA-B2 series, designed for general-purpose machine control applications requiring precise positioning and cost-effective motion control. Rated 400 W (0.5 HP) with 2.6 Arms continuous output current and 7.8 Arms instant maximum output current, it operates on 220 V AC single-phase or three-phase input. The drive supports position, speed, and torque control modes, with pulse command input up to 4 Mpps (differential) for high-precision positioning. Equipped with RS-232 and RS-485 communication interfaces and compatible with Delta ECMA series servo motors featuring 17-bit encoders, the ASD-B2-0421-B delivers reliable performance for packaging, textile, material handling, and small CNC applications. The built-in auto-notch filters and friction compensation improve low-speed stability and reduce mechanical resonance.

Core Engineering Highlights:
400 W (0.5 HP) rated output power | 2.6 Arms continuous output current / 7.8 Arms instant max current | 220 V AC, 1-phase or 3-phase input | Position, Speed, and Torque control modes | 4 Mpps max pulse input frequency | 17-bit encoder support (160,000 ppr) | RS-232 + RS-485 communication | Built-in auto-notch filters (2 auto + 1 manual) | Friction compensation | 0°C to +55°C operating temperature

Key Features:

• Original New Delta ASD-B2-0421-B servo drive

• 400 W (0.5 HP) rated output power with 2.6 Arms continuous output current

• 7.8 Arms instant maximum output current for dynamic load handling

• Supports 220 V AC single-phase or three-phase input

• Three control modes: Position, Speed, and Torque (freely switchable via parameters)

• High-speed differential command input up to 4 Mpps for high-precision positioning

• Supports 17-bit incremental encoders (160,000 pulses/revolution) for smooth low-speed operation

• Built-in auto-notch filters (2 auto + 1 manual) for mechanical resonance suppression

• Friction compensation function improves low-speed crawling performance

• RS-232 and RS-485 (Modbus RTU) communication interfaces

• Built-in keypad and digital display for parameter setting and real-time monitoring

• Multi-channel DI/DO terminals with customizable functions

• Compact chassis-mount design for control cabinet installation

• Natural cooling structure with IP20 protection

Applications:

• Packaging machinery

• Textile machinery

• Material handling and conveying systems

• Automated assembly lines

• Small to medium-sized CNC machines

• General-purpose machine control with moderate power requirements

• 3C automation equipment

• Small conveying mechanisms and transfer manipulators

Technical Specifications:

System Compatibility:

• Compatible with Delta ECMA series AC servo motors with 17-bit encoders, including ECMA-C20604RS, ECMA-C20604ES (with brake), ECMA-C20404RS, and ECMA-C20404ES (with brake). Motor model and firmware compatibility should be verified before installation.

• Supports Delta ASDA-Soft configuration software for tuning and parameter management

• Compatible with Delta DVP, AS, AH series PLCs for motion control integration

• Supports pulse train command from PLC positioning modules and motion controllers

• Direct interface to mainstream PLC pulse output ports without additional conversion modules

Related Products:

• ECMA-C20604RS – 400 W low-inertia AC servo motor (recommended matching motor)

• ECMA-C20604ES – 400 W low-inertia AC servo motor with brake

• ASD-B2-0721-B – 750 W servo drive (higher power)

• ASD-B2-1521-B – 1.5 kW servo drive (higher power)

• ASD-B2L-0421-B – 400 W servo drive (L-type variant)

• ASDA-Soft – Configuration and tuning software for Delta servo systems

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Delta, ASDA-B2, and ECMA are trademarks of Delta Electronics, Inc.