ECMA-C20604RS 400W AC Servo Motor 3000rpm 17-Bit Encoder | Delta

The Original New Delta ECMA-C20604RS is a 400 W low-inertia AC servo motor from the ECMA-B2 series, designed for high-precision motion control in general-purpose machine automation. Rated 400 W (0.5 HP) at 220 V AC with 3000 rpm rated speed and 1.27 N·m rated torque, this low-inertia motor delivers fast dynamic response for loads with minimal inertia. The integrated oil seal protects internal windings and encoder from lubricant and cutting fluid ingress, extending operational life in demanding machining environments. Equipped with a 17-bit incremental encoder, keyway shaft with tap, and a 60 mm frame size, the ECMA-C20604RS is suitable for packaging machinery, textile equipment, material handling systems, and small CNC applications. This model is compatible with Delta ASDA-B2 series servo drives.

Core Engineering Highlights:
400 W (0.5 HP) rated output | 1.27 N·m rated torque / 3.82 N·m peak torque | 3000 rpm rated speed / 5000 rpm max speed | 17-bit incremental encoder (160,000 ppr) | 60 × 60 mm frame size | Oil seal and keyway w/ tap | 220 V AC | 2.60 Arms continuous output current / 7.80 Arms instant max current | Low-inertia rotor | 0°C to +40°C operating temperature | CE, cURus certified

Key Features:

• Original New Delta ECMA-C20604RS servo motor

• Low-inertia rotor design for fast acceleration and high-frequency positioning

• 400 W (0.5 HP) rated output power with 3000 rpm rated speed

• 1.27 N·m rated torque, 3.82 N·m peak torque (approx. 3× rated)

• Built-in 17-bit incremental encoder for high-resolution feedback (160,000 pulses/revolution)

• Integrated oil seal prevents lubricant and cutting fluid ingress

• Keyway shaft with tap for secure mechanical coupling

• Compact 60 × 60 mm frame size for space-efficient machine integration

• Natural cooling (fanless) for reduced maintenance

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

• Three control modes available: Built-in position, Speed, and Torque

• Compatible with ASDA-B2 series servo drives

• Part Status: Obsolete — no longer manufactured; available as spare part while stocks last

Applications:

• Packaging machinery

• Textile machinery

• Material handling and conveying systems

• Small CNC machines and milling heads

• Automated assembly lines

• General-purpose machine control with moderate power requirements

• 3C automation equipment

• Small conveying mechanisms and transfer manipulators

Technical Specifications:

System Compatibility:

• Compatible with Delta ASDA-B2 series servo drives, including ASD-B2-0421-B (400 W, 230 V 1-phase/3-phase). Drive model and firmware compatibility should be verified before installation.

• Supports 17-bit incremental encoder configuration

• Compatible with Delta ASDA-Soft configuration software for tuning and setup

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

• Supports Modbus communication protocol (RS-485/RS-422/RS-232)

• Power and encoder cables are shared with ASDA-B series for easy upgrades

Related Products:

• ASD-B2-0421-B – 400 W servo drive, 230 V 1-phase/3-phase (recommended matching drive)

• ECMA-C20604SS – Same motor with brake (alternative configuration)

• ECMA-C20807RS – 750 W low-inertia servo motor (higher power)

• ECMA-C10604RS – 400 W low-inertia servo motor (alternate frame)

• ASD-ABEN0003 – Incremental encoder cable, 3 m, for ASDA-A2/B2 series

• ASD-ABPW0003 – Servo motor power cable, 3 m, for ASDA-A2/B2 series

• 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 and ECMA are trademarks of Delta Electronics, Inc.