TA2S V40 ER TW KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB TA2S V40 ER TW is part of the TA Synchronous Servo Motors series and has a mass of 2.2 kg with IP54 protection. This servo motor operates with a nominal torque of 1.39 Nm, a maximum torque of 4.2 Nm, and a nominal speed of 4500 revolutions per minute. It features a 400 V nominal voltage and includes a PTC thermistor and a BRX 2-pole resolver.
Internal Product Review
The TA2S V40 ER TW is a KEB synchronous servo motor that delivers impressive motion performance with 1.39 Nm nominal torque at 4500 rpm. IP54 protection and a BRX 2-pole resolver support dependable feedback and consistent operation in industrial automation service. A 4.2 Nm maximum torque stands out as a strong advantage for responsive servo applications.
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Product Description:
The TA2S V40 ER TW is a synchronous servo motor manufactured by KEB within the TA Synchronous Servo Motors series. It serves as a compact rotary actuator that converts controlled electrical power into accurate shaft motion for positioning and velocity control in industrial automation cells and machine tool axes. Its synchronous design supports closed-loop motion where stable torque and repeatable speed are required during frequent start-stop cycles.
During continuous operation, the stator windings use a nominal three-phase supply of 400 V AC, enabling rated flux without magnetic saturation. Under this voltage, the rotor can sustain a speed of 4500 rpm, which suits high-speed positioning and direct-coupled axis operation. Peak phase demand reaches 3.85 A, setting the current requirement for the matched drive and motor cable. Short-term overload capability allows the shaft to deliver up to 4.2 Nm, providing acceleration reserve above the nominal torque. The phase inductance of 59.4 mH contributes to a slower current rise characteristic during dynamic commands. A stall torque of 1.4 Nm is available at zero speed. The integrated BRX 2-pole resolver operates at 10 kHz and delivers 7 VAC feedback, while a PTC thermistor embedded in the windings reports thermal load to the drive.
The rotor has 6 poles, which supports smooth electronic commutation through the operating range. An inertia of 0.391 kg cm² supports rapid start-stop cycles without large regenerative peaks. The aluminum housing is rated IP54, guarding internal components from dust and splashing water common on factory equipment. Windings use insulation rated to 155 °C, and the 2.2 kg mass helps move heat into the frame during extended duty. The low mass also reduces the load added to brackets, slides, and other moving machine elements.
