What's the Difference Between Brake Packs (Electronic brakes) and Electromagnetic Brakes?
Ms. Ori! What is the difference between a brake pack used in combination with an AC motor and an electromagnetic brake with an AC motor? It's the same brake, right?
Hey, Vex. You're already in your second year and you still don't know that? There are different types of brakes, and you can choose one depending on the purpose of use.
I was so confused by the new employee's question... If I remember correctly, you need a brake pack when you want to perform instantaneous stops, right...?
That's right. The brake pack is an electronic brake with an instantaneous stop function, which applies braking current to the motor to stop it in a short amount of time.
Wait, weren't electromagnetic brakes necessary for vertical operation?
Yes. A holding force is required for vertical operation. It mechanically locks the motor shaft, allowing it to hold a stopped load in the same position. That's why I'd suggest an electromagnetic brake motor if you want to hold the load, even for operations other than vertical.
Okay then, can electromagnetic brake motor perform an instantaneous stop?
Yes, it can. However, electromagnetic brake motors have an overrun of 2 to 3 revolutions. A brake pack on the other hand, can stop with only 1 to 2 revolutions of overrun.
What's overrun?
The amount of overspeed that a rotating motor is turned off to the time it stops is called overrun. The overrun on the motor shaft under no load is 30 to 40 revolutions for induction motors and 5 to 6 revolutions for reversible motors. But when a gearhead is used, each value is equal to the division by the gear ratio on the gearhead output shaft.
Oh, I see. It would be nice to be able to use this useful brake together with that.
What are you talking about? There is.
What?
It's a brake pack called "SB50 W." When used in combination with an electromagnetic brake motor, it can hold a load and perform instantaneous stop. Have you forgotten?
Oh! Yeah, I totally forgot... All right! Now I can explain to junior colleagues as a senior. Thank you, Ms. Ori!
