Delta ECM-B3M-C20807RS1 Servo Motor

The Delta ECM-B3M-C20807RS1 is a 750W AC servo motor from the ASDA-B3 series, featuring a 24-bit incremental encoder for high-precision positioning. With a rated torque of 2.39 N-m at 3000 rpm and flange size of 80x80mm, this medium-inertia motor is 31% shorter than previous ECMA generation motors while maintaining the same mounting dimensions for easy replacement. It is designed for high-performance motion control in CNC machinery, robotic arms, packaging equipment, and automated production lines. The ASDA-B3 series delivers a 125 μs synchronization cycle for superior dynamic response.


**FAQ:**

**Q: Can this motor replace ECMA-C series motors?**
A: Yes, the ECM-B3M series maintains the same flange sizes and shaft diameters as ECMA-C, allowing direct mechanical replacement. The B3 series is 31% shorter and features a 24-bit encoder vs 20-bit on ECMA.

**Q: Does this motor have a brake?**
A: No, the RS1 suffix indicates no brake. For brake-equipped version, select ECM-B3M-C20807SS1.

**Q: What servo drive is required?**
A: Use with Delta ASDA-B3 series servo drives (ASD-B3-0721 for 750W). B3 motors can also work with ASDA-A2 drives but will run at A2's 1 ms communication cycle instead of B3's 125 μs.

**Q: What cables are needed?**
A: Encoder feedback cable (ASD-ABEN series) and power cable (ASD-ABPW series), sold separately.

**Q: What is the protection rating?**
A: IP65 for the motor body with oil seal. The shaft end should be protected from direct fluid exposure.