8LSC74.EA045D011-3
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The B & R Automation 8LSC74.EA045D011-3, part of the 8LS Synchronous Motors series, is a synchronous servomotor with a keyway output shaft design. It features a 74mm flange size, self-cooling via natural convection, and supports a maximum speed of 6000 rpm with IP65 protection for reliability.
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Product Description:
The 8LSC74.EA045D011-3 is an elite 8LS servo motor manufactured by B&R Automation for high power and torque applications. Equipped with a built-in fan module, this servo motor supports flange mounting at various orientations. As a compact servo motor, the mounting flange must be attached to the machine to dissipate heat effectively alongside the built-in fan module on the motor’s rear side. The advantage of 8LSC motors compared to their 8LSA motor counterparts is that 8LSC motors have higher nominal torque and current ratings due to their built-in fan modules. Aside from its efficient cooling system, this servo motor also has an inductive EA encoder that utilizes the EnDat 2.1 protocol.
The 8LSC74.EA045D011-3 has a nominal speed of 4500 rpm. With its five pole pairs, this machine can safely achieve a nominal torque output of 24.6 Nm. At this torque output, the shaft delivers a typical power of 11.59 kW. The winding, on the other hand, draws a nominal RMS current of 22.57 A. At stall conditions, this motor achieves a stall torque of 43 Nm. For most AC machines, the stall torque is usually higher than the nameplate torque. At most, however, this synchronous machine can operate at a ceiling torque of 150 Nm.
Like all other servo motors, the 8LSC74.EA045D011-3’s maximum speed can only be achieved at rated torque conditions. At most, this motor can achieve a shaft velocity of 6000 rpm. Owing to its efficient built-in fan module, this servo motor has a thermal time constant of 41 minutes, which is around 30% less than self-cooled 8LS motors. Without a blocking brake, this motor has a net mass of 24 kilograms and a moment of inertia of 60 kg(cm^2).
Frequently Asked Questions about 8LSC74.EA045D011-3:
Q: What type of encoder does the 8LSC74.EA045D011-3 employ?
A: The 8LSC74.EA045D011-3 employs a single-turn optical encoder.
Q: What is the switching frequency of the 8LSC74.EA045D011-3’s encoder?
A: The 8LSC74.EA045D011-3’s encoder has a switching frequency of 6 kHz.
Q: What is the stall current of the 8LSC74.EA045D011-3?
A: The 8LSC74.EA045D011-3 has a stall current of 39.45 A.
Q: What is the torque constant of the 8LSC74.EA045D011-3?
A: The 8LSC74.EA045D011-3 has a torque constant of 1.09 Nm/A.
Q: What is the voltage constant of the 8LSC74.EA045D011-3?
A: The 8LSC74.EA045D011-3 has a voltage constant of 65.97 V per 1000 rpm.
