AX2850 Most Effective E-Stop Setup?

11 years 4 months ago #29525000 by bccreed
Hi,

I am trying to implement a safer e-stop on our AX2850. We have the E-Stop/Inverter input working, but want an additional hard wired e-stop system.

Which of these options would you guys recommend?

1. Power Control Wire - Add a relay to ground this wire to \"shut off\" the controller. Would this be effective?

2. Relay in line with the main power of the controller - Cut the main power to the controller.

3. Two relays, each in line with the motor outputs - Disconnect one wire from each motor on the controller.

Could any of these options damage the controller or erase controller settings?

Thank You!

-Ben

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11 years 4 months ago #29525003 by cosma
Replied by cosma on topic Re:AX2850 Most Effective E-Stop Setup?
Option 3 would be the safest but requires a more expensive relay

Option 2 is the one that is the gentler to the controller

Option 1 will expose the controller to the effects of motor regeneration. It is not recomended. However you should have a disconnect swich there for the most extreme situations.

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11 years 4 months ago #29525004 by bccreed
Cosma,

I am now leaning towards \"option 3\" and plan to use two 80 amp relays ( www.sonicelectronix.com/item_5288_PAC+PAC-80.html ), one for each motor.

My question:

Can I damage the controller if it is running and suddenly the load is removed from it? (As would be the scenario with this case)

Thanks

-Ben

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11 years 4 months ago #29525005 by cosma
Replied by cosma on topic Re:AX2850 Most Effective E-Stop Setup?
That would be fine. The controller will not see any spike or any other kind of stress at all.

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11 years 4 months ago #29525006 by wstuck
Thanks for the information listed above.

I am also planning on using the same type of E-Stop.
The link for the part is very helpful.

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