<p>When you command a move such as <code>G1 Z10</code>, you are omitting the speed at which the tool head travels. Without specifying the speed, the speed from the last command or speed setting is used. Frequently, after levelling the bed, the tool head is raised in Z direction with a low speed (movement in Z direction is always much slower than in X or Y direction), if you command a movement after raising the tool head it uses this speed. For faster movement you must include the feedrate, e.g. <code>G1 Z10 F600</code>, now it will accelerate from the initial feedrate (e.g. 300) to 600 during the move. If you want instant speed you set the feedrate first and then move the tool head:</p>

<pre><code>G1 F600
G1 Z10
</code></pre>

CC BY-SA 4.0
2020-03-15T10:41:19.997Z
Remember, this is a Delta, the XYZ-"axis"-Motors are all moving along the vertical and their relative position causes the printhead to move in the XY plane as well as the Z axis.
Trish
CC BY-SA 4.0
2020-03-15T17:59:00.680Z
@Trish I know, the fact that this is a delta machine has nothing to do with it, this is generic theory about G-code. But good you mention this for others to understand. :-)
0scar
CC BY-SA 4.0
2020-03-15T08:07:37.950Z
2020-03-15T08:07:37.950Z
0scar
<p>I'm running a large delta 3D printer with Repetier firmware.</p>

<p>The problem that is irritating me is that the speed of the carriages are too slow, like an old lady that is walking in a football field. When I command <code>G1 Z10</code>, for example, the carriages move with a super low speed. I checked everything but I couldn't find the problem.</p>

<p>Here are the specifics and the current settting of the printer:</p>

<ul>
<li>electronics : Arduino Due + RADDS 3 42cmo6 6 kg</li>
<li>2.5 A stepper motors for x,y and z axes </li>
<li>3 TOSHIBA ''TB67S109'' stepper drivers (0.1 resistance, 1/16 mic stepping) </li>
<li>Vref of drivers: 0.7 V (when I    increase this to 1 volt a weird
sound comes from steppers and the carriages won't move)</li>
<li>number of pulley teeth: 20 </li>
<li>belt pitch: 2</li>
<li>steps per rev: 200</li>
<li>micro stepping: 1/16</li>
<li>steps per mm: 80</li>
<li>Max. travel speed: 300 for X,Y,Z</li>
<li>Homing speed: 100 for X,Y,Z</li>
<li>Travel acceleration: 3000 for X,Y,Z</li>
<li>Print acceleration: 1000 for X,Y,Z</li>
</ul>

<p>PS: I'm currently calibrating the printer and haven't printed anything yet.</p>

CC BY-SA 4.0
2020-03-13T20:03:47.853Z
did you write the firmware custom? have you tried to send the command `G1 Z10 F300`?
Trish
CC BY-SA 4.0
2020-03-14T09:22:10.617Z
Thanks for your reply.Yes I tried that but nothing changed.
Mj996
CC BY-SA 4.0
2020-03-14T10:57:14.100Z
ok, try altering max Travel to the insane 10000, then try with `G1 Z100 F1000`?
Trish
CC BY-SA 4.0
2020-03-14T13:59:57.083Z
Thanks Terish.I solved it.But now there's another problem the Z stepper motor only moves in one direction.
I checked all of the endstops.They work fine.
I checked the stepper drivers ,all of them had the same voltage 0.7 v .
When I home the printer all the carriages move upward but when they hit the endstops  the Z endstop stays triggered I mean the carriage holds the lever of microswitch.
Mj996
CC BY-SA 4.0
2020-03-14T14:00:46.780Z
oh? Did you forget to M503 seed the limits? Write your own answer!
Trish
CC BY-SA 4.0
2020-03-14T14:06:01.187Z
I think so.Each time that I uploaded a firmware with new settings the printer remained with old settings.So I had to clean EEPROM first before uploading new settings.
Mj996
CC BY-SA 4.0
2020-03-14T14:10:38.160Z
and another thing that seems weird is that when I swap the X-axis and Z-axis motor cables on the Radds board. Both motors are working just fine but whichever motor that is plugged into the Z-axis motor driver socket would only move in one direction .
Mj996
CC BY-SA 4.0
2020-03-15T07:57:54.850Z
Please check your endstops with `M119`, usually (from experience), when a stepper only moves in one direction, this is caused by a triggered endstop.
0scar
<troubleshooting><delta><repetier><speed>
Slow speed of the delta 3D printer
Mj996
# Slow speed of the delta 3D printer

(Asked by: username_0 on 2020-03-13)

I'm running a large delta 3D printer with Repetier firmware.

The problem that is irritating me is that the speed of the carriages are too slow, like an old lady that is walking in a football field. When I command `G1 Z10`, for example, the carriages move with a super low speed. I checked everything but I couldn't find the problem.

Here are the specifics and the current settting of the printer:

* electronics : Arduino Due + RADDS 3 42cmo6 6 kg
* 2.5 A stepper motors for x,y and z axes
* 3 TOSHIBA ''TB67S109'' stepper drivers (0.1 resistance, 1/16 mic stepping)
* Vref of drivers: 0.7 V (when I increase this to 1 volt a weird
  sound comes from steppers and the carriages won't move)
* number of pulley teeth: 20
* belt pitch: 2
* steps per rev: 200
* micro stepping: 1/16
* steps per mm: 80
* Max. travel speed: 300 for X,Y,Z
* Homing speed: 100 for X,Y,Z
* Travel acceleration: 3000 for X,Y,Z
* Print acceleration: 1000 for X,Y,Z

PS: I'm currently calibrating the printer and haven't printed anything yet.

**Tags:** troubleshooting, delta, repetier, speed

> **Comments:**
> **username_1**: did you write the firmware custom? have you tried to send the command `G1 Z10 F300`?  
> **username_0**: Thanks for your reply.Yes I tried that but nothing changed.  
> **username_1**: ok, try altering max Travel to the insane 10000, then try with `G1 Z100 F1000`?  
> **username_0**: Thanks Terish.I solved it.But now there's another problem the Z stepper motor only moves in one direction. I checked all of the endstops.They work fine. I checked the stepper drivers ,all of them had the same voltage 0.7 v . When I home the printer all the carriages move upward but when they hit the endstops  the Z endstop stays triggered I mean the carriage holds the lever of microswitch.  
> **username_1**: oh? Did you forget to M503 seed the limits? Write your own answer!  
> **username_0**: I think so.Each time that I uploaded a firmware with new settings the printer remained with old settings.So I had to clean EEPROM first before uploading new settings.  
> **username_0**: and another thing that seems weird is that when I swap the X-axis and Z-axis motor cables on the Radds board. Both motors are working just fine but whichever motor that is plugged into the Z-axis motor driver socket would only move in one direction .  
> **username_2**: Please check your endstops with `M119`, usually (from experience), when a stepper only moves in one direction, this is caused by a triggered endstop.  

---

## 1 answers

### Answer by username_2 on 2020-03-15. Score: 1

When you command a move such as `G1 Z10`, you are omitting the speed at which the tool head travels. Without specifying the speed, the speed from the last command or speed setting is used. Frequently, after levelling the bed, the tool head is raised in Z direction with a low speed (movement in Z direction is always much slower than in X or Y direction), if you command a movement after raising the tool head it uses this speed. For faster movement you must include the feedrate, e.g. `G1 Z10 F600`, now it will accelerate from the initial feedrate (e.g. 300) to 600 during the move. If you want instant speed you set the feedrate first and then move the tool head:

```
G1 F600
G1 Z10

```

> **Comments:**
> **username_1**: Remember, this is a Delta, the XYZ-"axis"-Motors are all moving along the vertical and their relative position causes the printhead to move in the XY plane as well as the Z axis.  
> **username_2**: @username_1 I know, the fact that this is a delta machine has nothing to do with it, this is generic theory about G-code. But good you mention this for others to understand. :-)  

---

