Den 2022-05-21 kl. 14:02, skrev gene heskett:
On Saturday, 21 May 2022 04:52:28 EDT you wrote:
Den 2022-05-19 kl. 23:57, skrev gene heskett:
On Thursday, 19 May 2022 16:19:37 EDT Marius Alksnys wrote:
Gene,
how about setting min and max limits to zero (or other initial
value),
maybe also not enabling B drive?
This can be done in a bash script like:
halcmd unlinkp io-board-going-to-b-servo-drive.enable-pin
halcmd setp ini.4.min_limit 0
halcmd setp ini.4.max_limit 0
halcmd setp ini.b.min_limit 0
halcmd setp ini.b.max_limit 0
or in HAL with mux_generic
http://linuxcnc.org/docs/html/man/man9/mux_generic.9.html
First I've heard of this, sounds like it could be usefull. ATM I'm
carving up an e-stop coupling between linuxcnc and a couple of those
3
phase drives.
These 3 phase drives have STO Safe Torque Off you connect to a real
emergency stop button? You use a safety relay?
Not a relay in some cases, although on this machine there is a relay
because there's two power supplies. A 120 volt to run most stuff, and a
250 for the spindle motor.
The low voltage 127 feed and the 254 for the vfd are interlocked in hal
by being disabled when F2 is toggled off. In this machine by a relay, but
in most of my machines by BIG SSR's controlled by logic level signals.
The Fault outputs are simply linked into the E-stop to toggle F2 off, and
by cross linkage in the hal file, toggles F1 to the inactive state also.
A safety relay like this one in link
https://se.farnell.com/pilz/pnozx4/relay-safety-3pst-no-240vac-8a/dp/4301237?ost=pnozx4
missing before connected to the emergency button. This one seems to be
German made, me myself have French pilz in my machine and guess it work
equally well.
It is common relay have an extra normally closed NC contact and plan is
to connect these in series with a magnetic unlock mechanism to the door.
If relays are correctly designed door will be locked until relays are
fully closed.
Nicklas Karlsson
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