Maybe I'm lost... But do you need this? Control side of the drives is up
and encoders are counting right? So why do the drives need to be ready to
actually move just because you're going to send disable estop?
The machine still isn't in the "machine on" state, so drive enables aren't
driven high yet anyways so why does it need to be ready to move when the
ESTOP comes off?
Regards,
Dave
On Wed, 23 Oct 2019 20:16:39 -0400, John Dammeyer <[email protected]>
wrote:
I've added back the safety aspect of an ESTOP event shutting down all
high voltages. The low voltage 24V stays on as does the PC/Monitor and
the AC to the PMDX-126 BoB. Ie. I have two 220VAC circuits. One for
all the Motor power and one for the Control power. Only the Motor Power
is removed.
Now click on the little orange icon to re-enable the system, ENABLE goes
active and the AC Motor Power Relay switches ON.
Interlocks prevent this while:
1. An ESTOP is still pressed
2. Spindle Motor Switch is in ON position,
3. Limit Switches are not in override if they were the cause of the
ESTOP in the first place and are still activated.
The ENABLE from the PC goes through the BoB and out to the various
drives. This happens faster than the high voltage power supplies for
the drives.
Is there a way to delay the ENABLE out?
Or will I be forced to build a circuit that makes sure the high voltages
are within range and use the output of that to gate the ENABLE?
What's everyone else doing?
Thanks
John
"ELS! Nothing else works as well for your Lathe"
Automation Artisans Inc.
www dot autoartisans dot com
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