OpenBuilds Documentation

Part Store Documentation Software Community Support
docs:blox:faq-identify-motor-coils

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision 		Previous revision
docs:blox:faq-identify-motor-coils [2024/08/19 18:42]
admin 		docs:blox:faq-identify-motor-coils [2024/08/19 20:01] (current)
admin
Line 1: Line 1:
-===== 7.1 Troubleshoot stepper motor wiring / Identify Stepper Motor Coil wiring pairs =====+===== 11.1 Troubleshoot stepper motor wiring / Identify Stepper Motor Coil wiring pairs =====
  
-==== 7.1.1 Troubleshooting ====+==== 11.1.1 Troubleshooting ====
  
 If you have incorrectly identified the pairs, or made a wiring mistake where for example only 3 of the 4 wires are making good contact, then typically you will see one/more of the following symptoms: If you have incorrectly identified the pairs, or made a wiring mistake where for example only 3 of the 4 wires are making good contact, then typically you will see one/more of the following symptoms:
Line 20: Line 20:
 ---- ----
  
-==== 7.1.2 Identifying Stepper Motor Coil wires ====+==== 11.1.2 Identifying Stepper Motor Coil wires ====
  
 A stepper motor is a type of brushless motor, consisting of a permanent magnet Rotor, and two static 'stator coils' inside the housing (for the purpose of our typical configurations, these are called Bipolar Stepper motors, there are other less popular configurations such as Unipolar as well, but usually these not applicable to our typical configurations. This section deals with Bipolar 4-wire motors specifically) A stepper motor is a type of brushless motor, consisting of a permanent magnet Rotor, and two static 'stator coils' inside the housing (for the purpose of our typical configurations, these are called Bipolar Stepper motors, there are other less popular configurations such as Unipolar as well, but usually these not applicable to our typical configurations. This section deals with Bipolar 4-wire motors specifically)
Line 40: Line 40:
 ---- ----
  
-==== 7.1.3 Procedure (with a Multimeter) ====+==== 11.1.3 Procedure (with a Multimeter) ====
  
-=== 7.1.3.1 Set your Multimeter to Continuity ===+=== 11.1.3.1 Set your Multimeter to Continuity ===
  
 Set your Multimeter to Continuity / Diode Test mode: Set your Multimeter to Continuity / Diode Test mode:
  
-=== 7.1.3.2 Connect the Negative probe ===+=== 11.1.3.2 Connect the Negative probe ===
  
 Start with any random wire, and touch that to the Black/negative probe on your multimeter Start with any random wire, and touch that to the Black/negative probe on your multimeter
  
-=== 7.1.3.3 Test first wire ===+=== 11.1.3.3 Test first wire ===
  
 Select any remaining wire and touch it with the Red/Positive probe of your multimeter: You have a 33% chance of finding that first wire's companion on the first try, but lets assume you did not. Thanks to our visualisation of the coils, you can see that we hit a wire belonging to the other coil on our first try. So that's not the one we are looking for… If the Multimeter shows [1] it means "no connection" - indicating we did not find a coil between these two wires. Some multimeters also "beep" when it does find a connection, so if there is no beep noise, it also could indicate the coil is not between these two wires Select any remaining wire and touch it with the Red/Positive probe of your multimeter: You have a 33% chance of finding that first wire's companion on the first try, but lets assume you did not. Thanks to our visualisation of the coils, you can see that we hit a wire belonging to the other coil on our first try. So that's not the one we are looking for… If the Multimeter shows [1] it means "no connection" - indicating we did not find a coil between these two wires. Some multimeters also "beep" when it does find a connection, so if there is no beep noise, it also could indicate the coil is not between these two wires
Line 56: Line 56:
 {{:docs:blackbox-x32:probe1.png?400}} {{:docs:blackbox-x32:probe1.png?400}}
  
-=== 7.1.3.4 Test another wire ===+=== 11.1.3.4 Test another wire ===
  
 Let's try another wire, again a 33% chance you are going to find the one we are looking for. Keep the Black/Negative probe on the wire from (2) above. As you can see, multimeter is still showing us [1] (and no 'beep') so we still did not find the wire that pairs up with the wire touching the Black probe… Let's try another wire, again a 33% chance you are going to find the one we are looking for. Keep the Black/Negative probe on the wire from (2) above. As you can see, multimeter is still showing us [1] (and no 'beep') so we still did not find the wire that pairs up with the wire touching the Black probe…
Line 62: Line 62:
 {{:docs:blackbox-x32:probe2.png?400}} {{:docs:blackbox-x32:probe2.png?400}}
  
-=== 7.1.3.5 Test correct wire ===+=== 11.1.3.5 Test correct wire ===
  
 Moving to the last remaining wire, we finally see a reading on the multimeter. The actual number does not matter too much, its more important that it has some low value reading, and that the multimeter no longer displays [1] on the display. Some multimeters may "beep" when you have continuity between the wires (circuit completed by the coil in between) Moving to the last remaining wire, we finally see a reading on the multimeter. The actual number does not matter too much, its more important that it has some low value reading, and that the multimeter no longer displays [1] on the display. Some multimeters may "beep" when you have continuity between the wires (circuit completed by the coil in between)
Line 72: Line 72:
 {{:docs:blackbox-x32:probe3.png?400}} {{:docs:blackbox-x32:probe3.png?400}}
  
-=== 7.1.3.6 Confirm remaining wires has a coil ===+=== 11.1.3.6 Confirm remaining wires has a coil ===
  
 Lets just probe the two remaining wires to make sure there is a coil between them: If there is, as shown below, label these two wires as belonging to a coil. Display should show a reading, and the multimeter may beep Lets just probe the two remaining wires to make sure there is a coil between them: If there is, as shown below, label these two wires as belonging to a coil. Display should show a reading, and the multimeter may beep
Line 82: Line 82:
 ---- ----
  
-==== 7.1.4 Procedure (without a Multimeter) ====+==== 11.1.4 Procedure (without a Multimeter) ====
  
-=== 7.1.4.1 Twist together two random wires ===+=== 11.1.4.1 Twist together two random wires ===
  
 Start by taking any two random motor wires and twisting/touching them together as shown. If the two wires you joined together, belong to one coil, they will self-induce a magnetic field in the motor when you try to turn the shaft by hand. This will be noticable with an increased resistance against turning, and may even feel like you are turning against a clicking feeling. If that shaft still spins easily, you have not identified a coil yet Start by taking any two random motor wires and twisting/touching them together as shown. If the two wires you joined together, belong to one coil, they will self-induce a magnetic field in the motor when you try to turn the shaft by hand. This will be noticable with an increased resistance against turning, and may even feel like you are turning against a clicking feeling. If that shaft still spins easily, you have not identified a coil yet
Line 90: Line 90:
 {{:docs:blackbox-x32:twist_1.png?400}} {{:docs:blackbox-x32:twist_1.png?400}}
  
-=== 7.1.4.2 Try a different combination ===+=== 11.1.4.2 Try a different combination ===
  
 If you have not identified a coil yet, disconnect the two wires joined together before, and join a different pair. In the example below, you can see that this wire pair still does not belong to the same coil. If the two wires you joined together, belong to one coil, they will self-induce a magnetic field in the motor when you try to turn the shaft by hand. This will be noticable with an increased resistance against turning, and may even feel like you are turning against a clicking feeling. If that shaft still spins easily, you have not identified a coil yet If you have not identified a coil yet, disconnect the two wires joined together before, and join a different pair. In the example below, you can see that this wire pair still does not belong to the same coil. If the two wires you joined together, belong to one coil, they will self-induce a magnetic field in the motor when you try to turn the shaft by hand. This will be noticable with an increased resistance against turning, and may even feel like you are turning against a clicking feeling. If that shaft still spins easily, you have not identified a coil yet
Line 96: Line 96:
 {{:docs:blackbox-x32:twist_2.png?400}} {{:docs:blackbox-x32:twist_2.png?400}}
  
-=== 7.1.4.3 Find a valid combination ===+=== 11.1.4.3 Find a valid combination ===
  
 If you join together two wires that do result in the motor presenting resistance against turning, you can label these two wires as belonging to the same coil, and wire them to the A+/A- outputs of your stepper driver If you join together two wires that do result in the motor presenting resistance against turning, you can label these two wires as belonging to the same coil, and wire them to the A+/A- outputs of your stepper driver
Line 102: Line 102:
 {{:docs:blackbox-x32:twist_3.png?400}} {{:docs:blackbox-x32:twist_3.png?400}}
  
-=== 7.1.4.4 Confirm the remaining pair also forms a coil ===+=== 11.1.4.4 Confirm the remaining pair also forms a coil ===
  
 Repeat the test with the remaining two wires, just to confirm that they are also a pair connected to one coil. If it is, you will feel the tell-tale resistance against turning the shaft by hand. Repeat the test with the remaining two wires, just to confirm that they are also a pair connected to one coil. If it is, you will feel the tell-tale resistance against turning the shaft by hand.
docs/blox/faq-identify-motor-coils.1724092954.txt.gz · Last modified: 2024/08/19 18:42 by admin

Page Tools

All works Copyright © by OpenBuilds®, LLC
All rights reserved. This Documentation or any portion thereof including but not limited to (menu structures, images, layout, videos, graphical artwork, logos, names, trademarks, etc.) may not be reproduced or used in any manner whatsoever without the express written permission of OpenBuilds, LLC