ECM-B3M-E21310SS1 DELTA B3 Series Medium Inertia Servo Motor 1 kW

Product Overview

The ECM-B3M-E21310SS1 (ECMB3ME21310SS1) is a high-performance industrial servo motor from Delta's advanced B3 series, designed to meet the rigorous demands of modern motion control applications. Featuring a 1 kW rated power output and a medium inertia rotor design, this motor strikes an optimal balance between high-speed response and stable control for loads with varying mass. It is equipped with a high-resolution 24-bit incremental optical encoder, providing 16,777,216 pulses per revolution for unmatched positioning accuracy. Built for reliability in harsh industrial environments, this model includes an integrated mechanical brake and a high-grade oil seal, making it ideal for vertical axis applications in CNC machining, automated packaging, and high-precision material handling systems.

Suffix & Part Number Breakdown

The ECM-B3M-E21310SS1 part number follows Delta's structured identification logic for the B3 series:

• ECM: Electronic Commutation Motor.

• B3: Product series (B3 High-Performance Series).

• M: Medium Inertia (Optimized for applications requiring stable control of moderate loads).

• E: Rated Voltage and Speed (220 V / 2000 rpm).

• 2: 24-bit Incremental Optical Encoder.

• 13: Motor Frame Size (130 mm).

• 10: Rated Power Output (1.0 kW).

• S: Shaft and Oil Seal configuration (Keyway with fixed screw holes, includes Brake and Oil Seal).

• S: Standard connector type and standard shaft diameter.

• 1: Special Code (Standard product specifications).

Technical Specifications

Technical FAQs

When should I choose the "Medium Inertia" (M) version over the "Low Inertia" version?

The Medium Inertia rotor in the ECM-B3M-E21310SS1 is designed for applications where the load inertia is relatively high or fluctuates during operation. It provides greater mechanical stability and reduces the tuning complexity for the servo drive, making it superior for belt-driven systems and heavy-duty mechanical linkages compared to low-inertia motors which are strictly for ultra-fast acceleration of light loads.

What is the significance of the 24-bit encoder in this motor?

The 24-bit optical encoder provides a significantly higher resolution than standard 17-bit or 20-bit encoders. This allows for smoother low-speed operation, improved surface finish in CNC applications, and much higher rejection of mechanical resonance, as the servo drive can detect and compensate for minute deviations in position.

How does the integrated brake function in vertical applications?

The integrated brake is a holding brake designed to lock the motor shaft in place when power is removed (failsafe). This prevents the "dropping" of vertical axes due to gravity during an emergency stop or power failure. It should not be used as a dynamic brake to stop the motor while it is spinning.

Engineering & Installation Guide

• Oil Seal Maintenance: The integrated oil seal protects the motor internals from gearbox lubricants or cutting fluids. Ensure that the oil level in the connected gearbox does not exceed the center of the motor shaft to prevent excessive pressure on the seal, which could lead to premature wear or fluid ingress.

• Holding Brake Wiring: The brake requires a dedicated 24 VDC power supply. Never connect the brake to the same power source as the servo drive logic without isolation, as back-EMF from the brake coil can cause electrical noise. Always use a surge-protecting diode or varistor across the brake coil to suppress voltage spikes.

• Shaft Alignment: When mounting the motor using the 130 mm frame flange, ensure the coupling alignment is within the manufacturer's specified tolerance (typically < 0.03 mm). Misalignment can cause excessive radial loads on the bearings and the oil seal, leading to increased vibration and shortened motor life.