Automated Braking i...
 
Notifications
Clear all

Automated Braking if loss of power

11 Posts
1 Users
0 Likes
28.8 K Views
(@bmick08)
Posts: 17
Active Member Guest
Topic starter
 

I am having trouble using the BRKSRV command. I need the servo to engage the break when it loses power, so that the stroke of my linear actuator cannot be changed. How should this command be used? I do not know where to put the command since I do not know where in the code the power would fail. Basically it would be nice to see some example code using this command.

 
Posted : 25/05/2012 11:21 am
(@csearcy)
Posts: 0
New Member Guest
 

BRKSRV is the default mode, but if you want to make sure it is always set(in case someone changed it in the Terminal window), add that as the first line in your program.

You can test it by issuing "OFF" in the Terminal window, which will turn drive power off and engage the brake. You should hear an audible "click" and the brake LED will change states.

 
Posted : 25/05/2012 11:46 am
(@bmick08)
Posts: 17
Active Member Guest
Topic starter
 

My program is in an infinite loop using an analog signal. Whenever I type OFF, there is no response. It continues reading and making its adjustments. Should I not be able to test it by simply unplugging the SmartMotor and then seeing if the actuator can be moved?

 
Posted : 25/05/2012 12:08 pm
(@csearcy)
Posts: 316
Reputable Member Guest
 

Yes. You can check it by cutting the power off. The brake will also engage when power is on, but the drive is faulted or turned off. Your endless loop is probably continuously issuing G commands which is overriding the OFF command.

 
Posted : 25/05/2012 12:11 pm
(@bmick08)
Posts: 17
Active Member Guest
Topic starter
 

So I placed "BRKSRV" at the beginning of my code and when the power is cut, the brakes did not engage. Any ideas as to what is going wrong? I can still move the actuator will a light force of my hand.

 
Posted : 25/05/2012 12:36 pm
(@csearcy)
Posts: 316
Reputable Member Guest
 

Call me on 888-356-0357

 
Posted : 25/05/2012 12:38 pm
(@Beginner)
Posts: 7
Active Member Guest
 

Hi
I am having same problem. "BRKSEV" didn't not engage when power is off. Any idea on solving that?

 
Posted : 04/06/2012 5:54 pm
(@csearcy)
Posts: 0
New Member Guest
 

Take the motor off of the actuator. Issue the BRKRLS and BRKENG commands. If you do not hear a "click" when the brake engages... let me know.

 
Posted : 04/06/2012 6:13 pm
(@Beginner)
Posts: 7
Active Member Guest
 

I can't hear any "click"

 
Posted : 04/06/2012 6:28 pm
(@csearcy)
Posts: 0
New Member Guest
 

ok... if you remove power from the motor... you can rotate the shaft?
If so... the brake is damaged. Has it ever worked?... or have you only worked with it after assembly to the actuator?

 
Posted : 04/06/2012 6:31 pm
(@Beginner)
Posts: 7
Active Member Guest
 

I can rotate after power is cut off.

Thanks

 
Posted : 04/06/2012 6:36 pm
Share: