Product Description:

The BL-MS50E-30TB is an AC servo motor manufactured by Okuma within the BL Servo Motors series. Intended for CNC positioning and feed axes, the unit converts controlled electrical energy from a matched drive into repeatable mechanical rotation for machine tools and automated cells. Its electrical characteristics align with Okuma BL drive units, letting the motor operate on single-axis or multi-axis platforms where compact size and steady torque are required. This layout suits machine assemblies that need repeatable axis response without taking up excessive installation space.

During continuous operation, the motor draws a rated phase current of 6.5 Arms, which the drive must supply without exceeding thermal limits. For short acceleration bursts, the controller can raise output to a current ceiling of 27.8 A, giving extra torque while protecting the windings. The paired BL amplifier for this model needs a drive unit capacity of 50 A to maintain margin above these peaks. Under those electrical conditions, the shaft provides a mechanical rated output of 1.5 kW, which suits mid-frame lathes or gantry axes that need fast yet stable response. Onboard switches also allow adjustment of protective behavior within the standard operating range.

The Sw1 bank is factory set to 1 2, which sets resolver polarity and feedback scaling. For single-axis systems, the Sw2 rotary selector is preset to 1 2 3 4, which identifies the motor code on channel one so the controller can load the correct gain table. Dual-axis installations use alternate addressing by setting Sw2 and Sw3 on the second channel to 1 and 1. A board-edge jumper can also enable or disable internal options, and it ships in the Connect position to close the diagnostic circuit. These settings coordinate command input, feedback, and thermal protection without changing the motor's electrical ratings.