1. Do not share user accounts! Any account that is shared by another person will be blocked and closed. This means: we will close not only the account that is shared, but also the main account of the user who uses another person's account. We have the ability to detect account sharing, so please do not try to cheat the system. This action will take place on 04/18/2023. Read all forum rules.
    Dismiss Notice
  2. For downloading SimTools plugins you need a Download Package. Get it with virtual coins that you receive for forum activity or Buy Download Package - We have a zero Spam tolerance so read our forum rules first.

    Buy Now a Download Plan!
  3. Do not try to cheat our system and do not post an unnecessary amount of useless posts only to earn credits here. We have a zero spam tolerance policy and this will cause a ban of your user account. Otherwise we wish you a pleasant stay here! Read the forum rules
  4. We have a few rules which you need to read and accept before posting anything here! Following these rules will keep the forum clean and your stay pleasant. Do not follow these rules can lead to permanent exclusion from this website: Read the forum rules.
    Are you a company? Read our company rules
Shared accounts will be removed Plugin Downloads Zero spam policy Forum Rules

Linear Actuator Build - Yes...another one

Discussion in 'DIY Motion Simulator Projects' started by Blugreen, Dec 20, 2016.

Page 2 of 2
  1. OZHEAT

    OZHEAT Active Member

    Joined:
    Oct 26, 2015
    Messages:
    208
    Location:
    Australia
    Balance:
    2,459Coins
    Ratings:
    +106 / 6 / -0
    My Motion Simulator:
    3DOF, DC motor
    @Blugreen ,
    After looking at the your current design, you have the micro switches configured as an absolute hard stop/limit.
    Your ballscrew cannot go any further and pretty much it has already crashed in to the end.
    Most limit switches are configured before getting to a hard stop/crash so that it has time to do something eg. reverse, brake or shutdown.
    Your best bet would be all limit switches go to relay which shutdown all motor drivers as you can cause more damage if the other actuators keep moving.
    Using enable signals is better than just disconnecting power as you can damage drivers as the now uncontrolled motors generate power and pump it back to the motor driver(same reason that pure electric vehicles cannot be towed).

    The short of it is that, you need to safely shutdown the whole system if you have reached a hard stop.
    • Like Like x 2
    • Agree Agree x 1
    OZHEAT, Dec 29, 2016
    #21
Page 2 of 2