INPUT Resistors?

cncburn

cncburn
#1 I am working with DMM to hook up my DYN4 drives. They are asking if there are any resistors built into the Masso inputs. If so what size are they?

#2 On a separate but related question, when using a 5.6K ohm pull-up resistor (24v), for my touch probe, THC outputs, ect. What would be an appropriate wattage?

#3 Lastly, It appears that the diagram for the DMM drive hookup is incorrect. the alarm signal wiring is backwards according to DMM. Thank you for the help.
 

masso-support

MASSO Support
Staff member
  1. there is a 6.7K resistor in series to the opto.
  2. 1/4 watt will be fine.
  3. so you mean pin 18 and 5 needs to be swapped in the diagram? as we don't have the drives, most of the diagrams we make are just as an examples but we can update the drawings.
 

cncburn

cncburn
According to DMM, pin 18 should be the +Ve and pin 5 should go to the Masso input. They are helping me hook up multiple drives using a single alarm and ENA out to the Masso. I still need to test the solution they have gave to me. If everything works as expected, I will update you with the new schematic. Thank you again.
 

masso-support

MASSO Support
Staff member
thank you and please update us with your findings.

is there a particular reason why you are connecting all the drive alarms together because on MASSO you have separate alarm inputs for each drive.
 

clover

clover
#3 Lastly, It appears that the diagram for the DMM drive hookup is incorrect. the alarm signal wiring is backwards according to DMM. Thank you for the help.

According to my reading of the DYN4 data you are absolutely correct, it cannot work with the diagram by Masso. Attached is an alternative that will work although there is a 'gotcha'

Using this wiring you will NOT be able to use any of the following DYN4 outputs:

ONPOS - Pin 6

SRDY - Pin 7

BKO - Pin 19

Time permitting I will put together another diagram that will allow the use of these outputs concurrently with the ALM - Pin 18 but it will probably require the use of an external resistor.
 

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clover

clover
I have just noticed your latest post @cncburn . Using the connections in the diagram I posted there is no reason why you cannot connect multiple alarm signals into the one input pin on the Masso.
 

cncburn

cncburn
To Masso, I wanted to combine the outputs so I wouldn't have to use as many inputs on the masso. I also have a space issue in my control panel, I use Din rail terminal blocks so again, I'm trying to save some space. My theory is that if I get an alarm from any of the drives, everything is stopping anyway, it doesn't matter which drive caused it.

To Clover, I have the schematic that DMM created for this purpose, everything seems to be in order, I just have not tested it out yet. Fortunately, I don't plan on using the other pinouts (6,7,or 19) so I shouldn't experience any feedback issues. Your new schematic looks good. Thank you for your help.
 

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clover

clover
Thanks @cncburn the DMM solution is exactly the same as mine with he exception of the enable of which I became aware after the diagram was completed.
 

machinedude

machinedude
Quote from clover on December 13, 2018, 2:51 am

#3 Lastly, It appears that the diagram for the DMM drive hookup is incorrect. the alarm signal wiring is backwards according to DMM. Thank you for the help.

According to my reading of the DYN4 data you are absolutely correct, it cannot work with the diagram by Masso. Attached is an alternative that will work although there is a 'gotcha'

Using this wiring you will NOT be able to use any of the following DYN4 outputs:

ONPOS - Pin 6

SRDY - Pin 7

BKO - Pin 19

Time permitting I will put together another diagram that will allow the use of these outputs concurrently with the ALM - Pin 18 but it will probably require the use of an external resistor.

looks like I need to flip some connections I just did. glad I noticed this topic and decided to take a look.
 

machinedude

machinedude
my whole controller is in uncharted territory. DMM has you put line reactors on all your drives. the way they show you how to wire them in goes against everything the documentation from the line reactors tell you. so basically I'm winging it :)
 

machinedude

machinedude
this is what DMM sent me for reference on the next update to their documentation.
 

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machinedude

machinedude
these were the instructions from automation direct's line reactors. notice the close up and placement of the line reactor for best results and look how far away DMM has them placed in their new circuit.
 

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clover

clover
Thanks for the docs @machinedude.

Schematic drawings are simply a diagram of the way the individual components are wired relative to each other.Schematic drawings bear absolutely no relationship to the physical placement of the different components. In most cases schematic drawings are laid out for clarity and ease of being able to following the wiring.

Having said this, in the Line Reactor Instal Instructions document they are specifically referring to a VFD. These devices generate a lot of harmonics that can infiltrate the power line wiring and so placement of the reactor/noise filter close to the source of these harmonics helps reduce their effect.

Your DYN4 servo drive on the other hand would not generate anywhere near the same level of interference and so placement of these components is not as critical. Their purpose here is to stop any interference (harmonics etc) from getting into the DYN4 from the power lines.

To sum up - In each case the reactor/noise filter primarily serve different purposes.

1) With a VFD they stop the harmonics from getting into the power wiring.

2) With the servo drive they keep out any harmonics etc. that may be on the power line (perhaps from a VFD!).

Hope this helps.
 

machinedude

machinedude
regardless I have mine parked right in front of my drives. if they have to be there I want to get the most out of them. honestly they take up a lot of space in the enclosure and add extra cost to my build I was not planning for at first .But I had things rolling as far a things ordered so you roll with it and adapt I guess.
 

machinedude

machinedude
seems like the alarm works but I am having issues with the jogging of the motor I have hooked up? my motor and drives work fine in the configuration software by dmm but when I try to use masso to jog I get nothing? I've been over the wires and that looks good so i'm not sure if I over looked something when I set the drive up or if i'm missing something in the settings of masso? I have the drive set to position mode and have it saved to take pulse and direction. I've even been over that end several times?
 

machinedude

machinedude
DMM has a YouTube video on drive setup but this example was given towards the end for a position servo in pulse and direction mode. seems a little different than what was covered here. One thing I noticed while setting up the drive was when you read the drive one of the main things to look for is the OnPos to see if everything is normal. I'm wondering if the pin is left out if that would mess up how the drive communicates with the controller?
 

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