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Parallel Port breakout boards, motherboards, and dedicated accessories / Re: Low port#2 pin#16 voltage - PMDX-126 with jtechphotonics DAC PWM
« on: October 06, 2015, 06:29:29 AM »
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Parallel Port breakout boards, motherboards, and dedicated accessories / Re: Low port#2 pin#16 voltage - PMDX-126 with jtechphotonics DAC PWM
« on: October 05, 2015, 09:01:43 PM »
I am the lucky owner of a still fully functioning BOB :)
I can indeed verify that the relay is driven directly from the input thus requireing more than 50mA on the output...
Which one of the pmdx 104 and 105 should i buy? what are the differences (other than comparing specs) what use can i have for the pricier option?
The DAC PWM Does respond to Step/dir signals, do i nedd additional electronics to be safe?
I can indeed verify that the relay is driven directly from the input thus requireing more than 50mA on the output...
Which one of the pmdx 104 and 105 should i buy? what are the differences (other than comparing specs) what use can i have for the pricier option?
The DAC PWM Does respond to Step/dir signals, do i nedd additional electronics to be safe?
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Parallel Port breakout boards, motherboards, and dedicated accessories / Low port#2 pin#16 voltage - PMDX-126 with jtechphotonics DAC PWM
« on: October 04, 2015, 05:02:27 AM »
This question is posted on CNCZone too but with some changes to my setup since I posted there.
Im adding a Laser to my XZeroCNC Raptor.
I have PMDX electronics (126, 107 and 134) for BOB, spindlecontrol and Geckodrives (203V) receiving data from a EthernetSmoothStepper (ESS) and controlled by Mach3.
The DAC PWM is powered from the same 5V supply which is also used to power the ESS. PMDX is powered from 220V internal supply and Laser Driver board is powered from separate powersupply. Geckos are powered from an Automationtechnologies Toroidal supply at 56V.
I am now adding a JTechPhotonics DAC PWM, http://jtechphotonics.com/wp-content/uploads/2013/05/DAC_PWM-Manual-V1.13.pdf,
to my setup using the outputs from the second parallel port (port 2 pin 1,14,16 and 17).
Symptom:
When I in Mach3 click Mist toggle or Flood toggle the outputs in diagnostics view start to blink, the led associated with pin 16 and 17 light up respectively and the led on the DAC PWM lights up but the Laser driver power connector never goes up to expected 5V but stays at 0V.
I would expect the relay to klick but it does not (maybe it is mor silent than I expect). The DAC PWM board does receive step and direction signals and also sends out pwm signal. When I skip using the DAC-PWM relay for laser driver the laser driver does read 255 different levels as expected but never reaches desired output.
Investigating the source of the problem...
I disconnect Everything related to the DAC PWM from the BOB (PMDX-126) and check output voltage, 0v at low and 4.3V at high. When I reconnect DAC PWM and measure again it shows 0V at low but only 2.7 at high.
For now im guessing that the 5V 10A supply im using drops voltage under load so the driver does not get enough supply but when I disconnect the laser driver excessive load should not be present but the PMDX still has low 5v output.
Im frustration to this problem im about to invest in a lab grade powersupply which should be able to hold up the voltage. Could I have connected something wrong or is my system under no load drawing so much power that a regular 5v 10A supply cannot hold up?
Any help is greatly appreciated!
[edited by Bob to add full URL for DAQ-PWM manual]
Im adding a Laser to my XZeroCNC Raptor.
I have PMDX electronics (126, 107 and 134) for BOB, spindlecontrol and Geckodrives (203V) receiving data from a EthernetSmoothStepper (ESS) and controlled by Mach3.
The DAC PWM is powered from the same 5V supply which is also used to power the ESS. PMDX is powered from 220V internal supply and Laser Driver board is powered from separate powersupply. Geckos are powered from an Automationtechnologies Toroidal supply at 56V.
I am now adding a JTechPhotonics DAC PWM, http://jtechphotonics.com/wp-content/uploads/2013/05/DAC_PWM-Manual-V1.13.pdf,
to my setup using the outputs from the second parallel port (port 2 pin 1,14,16 and 17).
Symptom:
When I in Mach3 click Mist toggle or Flood toggle the outputs in diagnostics view start to blink, the led associated with pin 16 and 17 light up respectively and the led on the DAC PWM lights up but the Laser driver power connector never goes up to expected 5V but stays at 0V.
I would expect the relay to klick but it does not (maybe it is mor silent than I expect). The DAC PWM board does receive step and direction signals and also sends out pwm signal. When I skip using the DAC-PWM relay for laser driver the laser driver does read 255 different levels as expected but never reaches desired output.
Investigating the source of the problem...
I disconnect Everything related to the DAC PWM from the BOB (PMDX-126) and check output voltage, 0v at low and 4.3V at high. When I reconnect DAC PWM and measure again it shows 0V at low but only 2.7 at high.
For now im guessing that the 5V 10A supply im using drops voltage under load so the driver does not get enough supply but when I disconnect the laser driver excessive load should not be present but the PMDX still has low 5v output.
Im frustration to this problem im about to invest in a lab grade powersupply which should be able to hold up the voltage. Could I have connected something wrong or is my system under no load drawing so much power that a regular 5v 10A supply cannot hold up?
Any help is greatly appreciated!
[edited by Bob to add full URL for DAQ-PWM manual]
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