8MSA8M.E1-B6
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The 8MSA8M.E1-B6, designed by B & R Automation, is part of the 8MS Three Phase Synchronous Motors series and features a robust IP65 protection rating. This servo motor boasts a rated power of 8 kW and operates at a rated speed of 3000 rpm. It is equipped with an absolute encoder and utilizes natural cooling for efficiency.
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Product Description:
The 8MSA8M.E1-B6 refers to the B & R Automation Servo motor. It is part of the 8MSA8 series and is designated with size code 8. This motor is configured with a medium torque version labeled as M. The connection side for this model is placed on the A side. The motor employs a self-cooling method and does not require an external fan for heat dissipation.
The shaft of the 8MSA8M.E1-B6 servo motor is designed without an oil seal. The shaft type follows the keyed design standard as per DIN 748 Form E to ensure secure mechanical connectivity. Its rated torque output is 50 Nm while consuming a rated current of 27.8 A. The peak current can reach up to 139.4 A. The rated speed of the motor is 3000 rpm. The maximum achievable speed of the motor is 3600 rpm. The torque constant is rated at 1.90 Nm per Ampere. The encoder type integrated in this 8MSA8M.E1-B6 servo motor is E1. This is an EnDat multi-turn encoder that provides 512 pulses per revolution and can count up to 4096 turns. The servo motor is equipped with six magnetic poles to deliver accurate positioning and smooth operation. The insulation category is classified as Class F in accordance with IEC 60034-1 standards.
The 8MSA8M.E1-B6 servo motor delivers a peak torque of 204 Nm. The stall torque capacity is 68 Nm by consuming a stall current of 35.75 A. The maximum rotational acceleration without the brake is 17598 rad/s². The maximum allowable winding temperature is capped at 140°C. However, it is limited to 110°C by the ACOPOS drive safeguard. The motor adheres to vibration grade R to ensure stability in rigorous conditions. The voltage constant of an 8MS motor is 115 V per 1000 rpm.
Frequently Asked Questions about 8MSA8M.E1-B6:
Q: What drive types are compatible with the 8MSA8M.E1-B6 servo motor?
A: The 8MSA8M.E1-B6 servo motor is optimized for B&R’s ACOPOS servo drives. This supports fast fieldbus communication and integrated safety functions.
Q: Why is no oil seal used in the 8MSA8M.E1-B6 servo motor shaft?
A: The 8MSA8M.E1-B6 servo motor omits an oil seal to minimize shaft friction. It's intended for clean, sealed environments with low contamination risk.
Q: How does the EnDat encoder improve accuracy in the 8MSA8M.E1-B6 servo motor?
A: The 8MSA8M.E1-B6 servo motor uses an EnDat E1 multi-turn encoder for precise absolute tracking. It offers 512 PPR with 4096-turn memory for high-resolution control.
Q: What is the rotor moment of inertia for the 8MSA8M.E1-B6 servo motor?
A: The 8MSA8M.E1-B6 servo motor has moderate rotor inertia, suitable for fast acceleration. The exact value varies based on mechanical setup and load.
Q: Why is the torque constant 1.90 Nm/A in the 8MSA8M.E1-B6 servo motor?
A: The 8MSA8M.E1-B6 servo motor achieves 1.90 Nm/A from optimized coil design and magnetic materials. This is balanced for efficiency at 3000 rpm nominal speed.
