8JSA54.EA028D100-0
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The 8JSA54.EA028D100-0 is a motor starter designed with a rated operational voltage of 400 V AC and accommodates up to 28 A current. Manufactured by B & R Automation and part of the 8JS Synchronous Motors series, it provides IP20 protection. This DIN rail-mounted device ensures a mechanical life of 10 million cycles and weighs 1.5 kg.
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Product Description:
The 8JSA54.EA028D100-0 is an AC motor from the 8JS series, developed by B & R Automation for dynamic industrial needs. It delivers a nominal speed of 2750 r/min and a peak speed of 6100 r/min. This motor gets self-cooled through natural convection and it comes with a size 1 connector for encoder and power wiring.
The 8JSA54.EA028D100-0 motor provides a nominal torque of 11.17 Nm and a maximum torque of 54.5 Nm. It utilizes a normal current of 5.98 A and its peak current reaches 38.5 A in overload conditions. This motor makes use of 3217 W power and possess a torque constant of 1.87 Nm/A, along with a back emf of 120.3 V per 1000 rounds. The 8JSA54 motor’s electrical time constant is 6.1 ms, to cope with sudden load changes and it take 31 minutes as a thermal time constant to dissipate heat. This motor has five pole pairs for mutual induction inside the enclosure to deliver steady torque at all times, while its rotor inertia is rated at 12 kg·cm² to provide control over rapid acceleration and deceleration. The 8JSA54 motor has a total weight 9 kg without a brake and its built-in holding brake offers a torque of 14.5 Nm, along with an inertia of 0.173 kg·cm². The brake system weighs 1.1 kg and operates on a 24 V source.
The 8JSA54.EA028D100-0 motor requires 0.75 mm² of cable cross-section for connection and it is compatible with ACOPOS 1090, ACOPOS P3 8X8X servo drives as well as ACOPOSmulti 0110 systems. Its thermal and electrical parameters support continuous industrial duty up to 40°C and 95% RH. The 8JSA54 motor features a stator resistance of 1.58 Ohms and an inductance of 9.6 mH.
Frequently Asked Questions about 8JSA54.EA028D100-0:
Q: Why is natural convection cooling beneficial for the 8JSA54.EA028D100-0?
A: Natural convection cooling reduces the need for additional cooling components, lowering maintenance and increasing reliability. It suits environments where silent operation and minimal airflow disturbances are essential.
Q: What advantage does the 1.87 Nm/A torque constant provide?
A: A torque constant of 1.87 Nm/A means the motor delivers predictable torque proportional to current, facilitating precise control. This is vital in applications requiring fine speed and torque adjustments.
Q: How does the 6.1 ms electrical time constant improve motor response?
A: A short electrical time constant allows the motor to quickly adjust current during load changes, enhancing dynamic performance. This responsiveness is crucial for maintaining torque stability under varying conditions.
Q: What role does rotor inertia of 12 kg·cm² play in motor control?
A: Rotor inertia affects how quickly the motor can accelerate or decelerate. A value of 12 kg·cm² strikes a balance between smooth control and rapid response for precision motion applications.
Q: Can the 8JSA54.EA028D100-0 be integrated with other servo drives besides ACOPOS?
A: While optimized for ACOPOS drives, it can also interface with compatible servo systems that support similar electrical and communication protocols. Proper drive tuning ensures optimal motor performance.
