7i76e

More
4 years 9 months ago #231661 by Todd Zuercher
Replied by Todd Zuercher on topic 7i76e
I don't have any experience with those drivers so can't say what will or won't destroy them.

Please Log in or Create an account to join the conversation.

More
4 years 9 months ago #231712 by Aldenflorio
Replied by Aldenflorio on topic 7i76e
okay, I am at a complete loss. I have mapped out all of my wires, I have ensured they had good connections, I have done all the suggested things in this reply thread, I have ensured that everything matched up with all the diagrams i found, I used what I know and what I wrote down based on my previous build. Everything on my end in those regards checks out. They drivers are being supplied 30v, they were for a moment supplied 50v I'm not sure if that would fry them, but I am all out of leads.

My motors do not move, they softly hum when idle, they have no response otherwise. they seemed to be locked. Therefore, there must be power going to them. I don't know what to do. My Hal and ini files are both posted (they remain unchanged). I have no clue what to do concerning this. should I get new Drivers? the ones I am currently using are brand new. All four of them, they are all behaving this way.

My motors and drivers are listed, I'm using mesa 7i76e board as stated.

if anyone is willing i am more than open to Video chatting 

Please Log in or Create an account to join the conversation.

More
4 years 9 months ago #231713 by Clive S
Replied by Clive S on topic 7i76e
How are you trying to move the motors ?  Have you homed the machine ?

Can you show a wiring diagram of exactly how you have connected the 7i76e to the drives ?

Please Log in or Create an account to join the conversation.

More
4 years 9 months ago #231717 by Aldenflorio
Replied by Aldenflorio on topic 7i76e
I have all the homing switches set up and they are all properly assigned. When I open Linuxcnc for the table they even respond when being pushed on (the limit switches that is). i am using the limit switches as homes as well. you'll be able to seed that in my hal and ini files i believe. I am trying to move the motors on the test section of the Pfcon setup and i am trying to move them from Linuxcnc.

My motors are wired this way:

1 - From motor to aviation connector

2 - From aviation connector to driver as the pins are said to be on the site I bought the motors from (P1 A+, P2 A-, P3 B+, P4 B-)

3 - From driver to 7i96e board: Pul- to step- or pin2 ______ Pul+ to step+ or pin3_______ Dir- to Dir- or pin4_______Dir+ to Dir+ or pin5 (pin1 & pin6 are unused) (this pattern is repeater except for the Z motor because its a different motor)

Please Log in or Create an account to join the conversation.

More
4 years 9 months ago #231735 by Clive S
Replied by Clive S on topic 7i76e

I have all the homing switches set up and they are all properly assigned. When I open Linuxcnc for the table they even respond when being pushed on (the limit switches that is). i am using the limit switches as homes as well. you'll be able to seed that in my hal and ini files i believe. I am trying to move the motors on the test section of the Pfcon setup and i am trying to move them from Linuxcnc.

My motors are wired this way:

1 - From motor to aviation connector

2 - From aviation connector to driver as the pins are said to be on the site I bought the motors from (P1 A+, P2 A-, P3 B+, P4 B-)

3 - From driver to 7i96e board: Pul- to step- or pin2 ______ Pul+ to step+ or pin3_______ Dir- to Dir- or pin4_______Dir+ to Dir+ or pin5 (pin1 & pin6 are unused) (this pattern is repeater except for the Z motor because its a different motor)

Have you read the manual ?
From the manual:-
STEP/DIR INTERFACE
The 7I76E provides five channels of step/dir interface with buffered 5V differential
signal pairs. Each differential pair consists of two complementary 5V outputs. The
differential signals allows reliable signal transmission in noisy environments and can
directly interface with RS-422 line receivers. Step motor drives with single ended inputs
connect to just one of the STEP and DIR signal outputs, that is either the STEP+/DIR+ or
STEP-/DIR- signals, with the unused signals left unconnected at the 7I76E. The input
common signal on drives with single ended inputs connects to the 7I76Es GND or 5VP
pins depending on the drive type.

The the drives you have are single ended so in my opinion you have them wrongly connected as differential so will never work.

Please Log in or Create an account to join the conversation.

More
4 years 9 months ago #231743 by Aldenflorio
Replied by Aldenflorio on topic 7i76e
What? Yes I read the manual and I actually built one before. Everything electronically remains the same except for the board. I built my last one with a 7i96 board. These drivers worked for that build. So what you’re suggestion is that I have then the wrong drivers entirely? Or are you suggesting that I need to disconnect one the step/dir pairs? I’ll try that but I’m not sure that will do anything.

What about these drivers?  STEPPERONLINE CNC Stepper Motor Driver 1.0-4.2A 20-50VDC 1/128 Micro-Step Resolutions for Nema 17 and 23 Stepper Motor www.amazon.com/dp/B06Y5VPSFN/ref=cm_sw_r..._encoding=UTF8&psc=1

Please Log in or Create an account to join the conversation.

Time to create page: 0.117 seconds
Powered by Kunena Forum