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Messages - danilom

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1
PoKeys / Re: Help me decide which Pokeys Please
« on: December 10, 2016, 09:05:36 PM »
Here is some information about index homing

http://blog.poscope.com/pokeys-update-4-1-58-released/

2
PoKeys / Re: Help me decide which Pokeys Please
« on: December 10, 2016, 08:54:17 PM »
Index homing from encoder shall connect to the inputs stated in manual, but you have not been clear how are you getting the INDEX pulse from servo's encoder, some have encoder signal output A B Z and you can connect this Z to pokeys, some drives have referencing or homing as an internal routine which you activate with input to the drive some have both. In drive parameters you set the limit switch input and to which side does it back off and how many index pulses, after its done it will signal you with an output its referenced which you can read in Mach.

Encoder output from drive is usually 5V, if using internal referencing with output from drive it might work with 5V signals (working like NPN or PNP) or strictly 24V.

My suggestion would be some of the CNC4PC boards you mention, I have not looked deep into their manuals but look for 24V IO if not another nice solution which might be all in one is this
http://www.cncroom.com/interface-cards/pobob
I made my own boards and have been happy with them 24Vdc IO and 5V encoder inputs

3
PoKeys / Re: Change or map axis on Pokeys57CNC
« on: December 10, 2016, 08:37:47 PM »
simplest would be a simple switch with multiple contacts which will route the signals to whatever drive you want, or use some kind of plug connector and swap

as suggested here
https://www.machsupport.com/forum/index.php?;topic=31735.0

From pokeys support replay says that swapaxis does not work on Pokeys

4
PoKeys / Re: MPG increment value
« on: November 15, 2016, 12:53:35 PM »
After installing the new plugin from 31.10.2016 it works better than expected ! Now it moves even in 0.005 increments

Also the problems with machine moving after switching from MPG to Continuous mode if you dont press STOP before switching is gone now.

Can't wait to look at analog Thc ability for my other machine

5
PoKeys / Re: Beware Pokeys 57E is NOT a stand alone BOB
« on: June 21, 2016, 02:15:16 PM »
Well I needed 4axis 125khz with 35 inputs and 15 outputs all at 24V ( except MPG AB line at 5v ) for my retrofit, and I needed inputs to handle NPN sensors, outputs to be sinking.

When I could not find such an interface board I made one myself with pokeys I got at hand.

These might get to production if my Pokeys starts cooperating so I can test the board on the machine for at least a month.

6
PoKeys / Re: Beware Pokeys 57E is NOT a stand alone BOB
« on: June 21, 2016, 02:48:29 AM »
Please look to the schematic from the Pokeys manual page 92




and this is my board... al optos are EL817, and working fine


7
PoKeys / Re: MPG increment value
« on: June 16, 2016, 03:03:27 PM »
I'm using it on a retrofit VMC , Hurco MD1 , 7000mm/min per axis and 400 on accel. before I start turning it real quick its choppy until I drop mpg accel to maybe 20 and then its not so responsive. This is in Mach4. Yes I clear all settings befor switching.

8
PoKeys / Re: MPG increment value
« on: June 14, 2016, 07:34:36 PM »
Mach3 .066 fixed other issues but MPG is the same 4 steps is the lowest it will issue any movemen or ... MPG Multiplier of 1 is 4 steps, but its very smooth and as realtime as it could be.

Installed Mach4 just to try it and it allowed me to use 0.0001 increment , on the other hand I could not tune the MPG in Mach4 to behave smooth and realtime like it did handled by Pokeys in Mach3.

Someone might have an recipe for correct Velocity and Acceleration in % for the Mach4 MPG ? When does it transition from single step to velocity?

9
PoKeys / Re: Cant command any movement after homing
« on: June 14, 2016, 07:27:59 PM »
After installing .066 build Mach3 this issue is gone

I never used 066 because everyone suggested its buggy so I did not even try it, always used 062

10
PoKeys / Re: Beware Pokeys 57E is NOT a stand alone BOB
« on: June 13, 2016, 05:22:11 PM »
cant help with pwm output for the spindle as I don't use those but  for the VFD digital inputs you just can't wire them like that.

If you look at the manual https://inverterdrive.com/file/Teco-L510-Manual-EN-v2  on 24th page (3-15) the wiring for the S1 - S4 multifunction inputs is NPN or PNP depending on the model, if using relays this does not matter and you only need to supply 24v or Common from the VFD terminal to the wanted input, only other way that the design will allow is to use a optocoupler transistor output or an Proxy switch NPN or PNP .

You should not try to use pokeys common to switch those inputs on/off and it ofcourse will not work.

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