On 8 August 2010 04:35, Igor Chudov ichu...@gmail.com wrote:
Say, I say S3000 and drill. Then I change tool to a tap and say S300
and rigid tap. To accomplish that, EMC would actuate SPEED DECREASE
solenoid and wait until the output speed, as reported by the encoder,
approximately equals the
On Sun, Aug 8, 2010 at 5:33 AM, Andy Pugh a...@andypugh.fsnet.co.uk wrote:
On 8 August 2010 04:35, Igor Chudov ichu...@gmail.com wrote:
Say, I say S3000 and drill. Then I change tool to a tap and say S300
and rigid tap. To accomplish that, EMC would actuate SPEED DECREASE
solenoid and wait
Igor Chudov wrote:
Andy, my feeling on the matter, is that your solution is great. I
should somehow activate these comparators for a short time after a
speed change command (like for 7 seconds) and then disable them
afterwards. That way reversing with a VFD, is not a problem.
There is a
Jon Elson wrote:
Igor Chudov wrote:
Andy, my feeling on the matter, is that your solution is great. I
should somehow activate these comparators for a short time after a
speed change command (like for 7 seconds) and then disable them
afterwards. That way reversing with a VFD, is not a
On Sun, Aug 8, 2010 at 1:08 PM, Jon Elson el...@pico-systems.com wrote:
Igor Chudov wrote:
Andy, my feeling on the matter, is that your solution is great. I
should somehow activate these comparators for a short time after a
speed change command (like for 7 seconds) and then disable them
On 8 August 2010 19:08, Jon Elson el...@pico-systems.com wrote:
There is a spindle-at-speed function that could be used to decide when
the speed control logic has finished.
I believe that is an input, used to feed-hold until the drive
indicates that the spindle is at the correct speed.
--
Guys, I am just thinking, perhaps what I am trying to accomplish
(speed change via varidrive), could be best accomplished via an M100
command (shell script). Shell or perl scripts have access to hal,
right? I would write something like (in pseudocode)
$desired_speed = ARGV[0]
$delta = max( 5,
I forgot to cancel SPEED INCREASE/DECREASE at the and of the pseudocode. Sorry!
On Sun, Aug 8, 2010 at 1:51 PM, Igor Chudov ichu...@gmail.com wrote:
Guys, I am just thinking, perhaps what I am trying to accomplish
(speed change via varidrive), could be best accomplished via an M100
command
Igor Chudov wrote:
Jon, what is FF?
Anyway, I will start with easy buttons, such as BRAKE AUTO/OFF.
But I want to do everything right when it comes to other things, such
as spindle speed control, etc.
Sorry, flip-flop. a mechanism that sets to one logic value on a
particular trigger,
Jon, yes, good point on brake. I also want to let the vfd to stop the
spindle, and will use the brake for speed changes.
On Aug 8, 2010 3:10 PM, Jon Elson el...@pico-systems.com wrote:
Igor Chudov wrote:
Jon, what is FF?
Anyway, I will start with easy buttons, such as BRAKE AUTO...
Sorry,
I have a Bridgeport Interact mill with a three phase spindle motor on a VFD.
In addition, the mill has a vari-drive system with SPEED INCREASE and
SPEED DECREASE selector.
This selector activates pneumatic solenoids that drive an air motor.
The motor actually increases and decreases speed of the
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