Emergency stop button

[Brendan P]

Although I rearely run machines on the floor anymore,one thing that always aggravates me is when I go to boot up a machine I only get so far then I realize that someone had hit the E-stop button.

 

Is there any real logical reason for hitting this button on shut down at the end of the night??

I think that some of our operators have it instilled in their head that this needs to be done.

 

I personally have never done it,and never had a problem the next day on powering up.

I have never read that this needs to be done.

[mold100]

I actually got in the habit of throwin the switch,

If I even shut it down, I think for the most part exept during a storm why to even shut it down.

[robk]

Proper shut down procedure is; Emergency Stop On, Control Power Off, Machine Power Off. I just had to sign that off for the new machine we just had installed. Not sure why, but it doesn't hurt any. Just like Corey mentioned, I think it's more of a habit for me now than anything else.

[chris m]

Don't really know if it 'needs' to be done but I always E-stop, twist the button to release the E-stop [so the machine doesn't come up in an E-stop condition], Control Off, then shut the Main off.

 

The first thing I always do when I walk up to a machine that's shut down is twist the E-stop; just a habit...

 

C

[George_Gerhard]

There is a belief that you should press estop first to turn off the servo drives, so that when you turn off the main power there is no spike in the drive system

 

George

[Dan Schnars]

Our SH-630 gets FREAKED OUT if I try to power it up and that E-Stop has been pushed... I mean it ruins that thing's morning. Just habit here though too... Control Power Off, E-Stop, then Main Breaker...Right Wrong Indifferent, thats just habit...

[McRae]

The reason that I hit the estop first was to shut down the hydraulics and all the other drives under a "controlled" shutdown. The old guy I learned from suggested that the control would avoid electrical spikes this way if it was shut down on its own. Is this truth or just his opinion? Anyone... Anyone...

[Rekd™]

Andrew, I've heard the same from meh 'elders'

 

'Rekd teh E-Stop, Power off, Reset E-Stop

[Joels]

If i remember correctly i ran a Guildemiester cnc lathe and we had to put the machine in E Stop as part of the shutdown procedure.

[Mark H]

When we went to Mazak for training they said, Home the machine, turn off the controller and then turn off the breaker (on the machine)

 

Estop was never mentioned.

 

[ 05-28-2004, 09:43 AM: Message edited by: Mark H ]

[robk]

quote:

---

The reason that I hit the estop first was to shut down the hydraulics and all the other drives under a "controlled" shutdown.

---

Not sure about that Andrew considering that to turn on machine hydraulics only, one of the requirements is that E-stop has to be activated. That's on the Mitsubishis, not sure about other brands.

[Salahuddin]

I press the E stop too, I looked in the operation manual , it says the E Stop only for the Emergency sitution.

but I think I will continue to press it any way.

[Salahuddin]

the machine I have is Mitsubishi

[Brendan P]

I just found this in one of our newest purchased machines.

 

So maybe this is the proper procedure and dummy me has it all wrong.......

It doesn't say why though!

[TREV]

imo the e-stop is for when the machine is on fire.i have ran many diffrent machine makes and never e stoped them always power of then breaker.

maybe its wrong but it always works.to me if i want to simply turn of the machine this does not constitute a emergency.

trevor

[gcode]

A Haas servise tech told be you should always

hit the E stop when shutting down. It protects

the servo motors and drive cards from power spikes

during shut down, but more importantly,

it completely islotates the drive cards and contollers from spikes while powering up.

 

If the E stop is engaged during power up, the drive cards get no juice at all until the onboard

power supllies are up and runing.

[Guest CNC Apps Guy 1]

When the E-Stop is hit on my pallet pool - EVERYTHING ceases to function. GUess it's a safety feature so if you're at any part of the system and you see something going wrong, you can stop everything. Kind of a pain. E-Stop ONLY for an EMERGENCY, no other reason.

[Philcott]

I also always hit the "E-stop" at shut down. Always have, always will (unless the machine manufacturer says otherwise).

 

Have you ever thought there might be covert training going on? Every day we practice pushing the e-stop. This way in a real emergency our arms will reach out and hit the big red button without even having to think about where it is. Think about the last time you were doing a set-up and got wet when the coolant came on unexpectedly. How long did it take you to find the coolant off button/switch compaired to the last time you needed the e-stop button. Just a thought..

 

Phil

[Rekd™]

If I have to hit the E-Stop while the machine is running, it's too late, or the spindle has already gone thru the table and is penetrating the cement floor.

 

'Rekd

[chip]

I got into that habit for a while. On some 'ol school Mori's, part of the shut down procedures was to hit the E-stop. I guess you had to release the hydrolics. After a while with the hydrolics under pressure would blow the seals. One morning you show up and there's a big puddle of hydrolic fluid on the floor. With these new machines I think it releases the prsseure from the pumps when you hit the power button. I did it for years up until recently!

[chip]

quote:

---

If I have to hit the E-Stop while the machine is running, it's too late, or the spindle has already gone thru the table and is penetrating the cement floor.

---

+1

[Guest CNC Apps Guy 1]

Yeah, machines are so fast these days that you can't react fast enough to save the part let alone the macine if it's going at full rapid.

[gcode]

When I was first learning NC, I once hit an

E stop so hard I drove it through the face of the control (Anilam-Cursader).

[Brendan P]

quote:

---

When I was first learning NC, I once hit an

E stop so hard I drove it through the face of the control (Anilam-Cursader).

---

That is too funny!

I bet your heart skipped a couple 'o beats too!

[mold100]

I have emergency sropped with a 2" face mill before