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Topic: Best compact approach for Monorail stair climbing Lift (Read 663 times) previous topic - next topic

mi1400

NEMA-42 (D-Type) way seems promising.. in any of following two ways; NEMA-42 can hold without falling back...

I just need to keep it ENERGIZED i.e. power and backup power present.. the holding and locking it will provide is called HOLDING TORQUE.
http://forum.arduino.cc/index.php?topic=338619.0

Detent torque and holding torque
One feature of stepper motors that differentiates them from other motor types--particularly servo motors--is that they exhibit holding torque. This means that when the windings are energized but the rotor is stationary, the motor can hold the load in place. But a stepper motor can also hold a load in place when there is no current applied to the windings (for example, in a power-off condition). This is commonly known as the detent torque or residual torque.
https://www.motioncontroltips.com/faq-whats-the-difference-between-detent-torque-and-holding-torque/

NEMA D-Type
https://info.panelshop.com/blog/torque-characteristics-of-nema-a-b-c-d-e-motors

https://www.ebay.com/itm/20Nm-NEMA52-Stepper-Motor-Drive-Kit-HIGH-Torque-6-9A-3Phase-for-CNC-Machining/122270118942
(last image from above ebay item.. "D" at last in code shows/confirms D-Type
https://i.ebayimg.com/images/g/vyQAAOSwImRYUgWH/s-l1600.jpg)

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