Project

General

Profile

HPC LS3020 connections - July 2012 » History » Version 13

jaap, 2012-08-14 16:40

1 1 Anonymous
h1. HPC LS3020 connections - July 2012
2
3 4 Anonymous
{{>toc}}
4
5
h2. Wiring diagram
6
7 11 Anonymous
Here is a schematic diagram of how everything should be wired up (see message#26):
8 1 Anonymous
9 2 Anonymous
!LaOS-wiring.jpg!
10 1 Anonymous
11 4 Anonymous
h2. Laser ON cable
12
13 9 Anonymous
The laser-on cable, as it comes shipped with the laser cutter needs to have one wire switched over, from this:
14 4 Anonymous
15 8 Anonymous
!DSC_3499.jpg! ... to this: !DSC_3500.jpg!
16 1 Anonymous
17
It then plugs into the mainboard like this: !laser-on.png!
18 10 Anonymous
19
h2. Disabled laser PWM
20
21
To get started fast, just run the laser without PWM support - you can accomplish the same by manually turning the front-panel potmeter back to reduce the power.
22
23
With the July 12 power supply, you're done. To disable PWM on the older power supply, make sure the D+ and D- pins are jumpered on the power supply:
24
25
!DSC_3645.jpg!
26 6 Anonymous
27 4 Anonymous
h2. Y stepper cable
28
29 5 Anonymous
The Y stepper cable (with a 4-pin JST connector on the end) may be too short to reach the proper socket on the [[LAOS mainboard v0.3]] - this can be solved by manually splicing some extra wires, to extend it by about 15 cm:
30 4 Anonymous
31
!DSC_3647.jpg!
32 6 Anonymous
33 12 jaap
h2. Flatcable for X stepper and endstops
34
35
|_.Pin|_.Signal|_.Connect to|
36
|PIN12|XA-|J24.1 A|
37
|PIN11|XA+|J24.2 A|
38
|PIN10|XB-|J34.3 B|
39
|PIN9|XB+|J34.4 B|
40
|PIN6|COMMON|J34.4 GND|
41
|PIN5|XHOME|J34.2 XHOME|
42
|PIN4|YHOME|J34.3 YHOME|
43
|PIN3|+5V|J34.1 Vsensor|
44
45 13 jaap
!783px-HPC-flat-cable-pinning.jpg!
46 12 jaap
47 6 Anonymous
h2. Stepper driver orientation
48
49
Be *very* careful how you place the stepper drivers on the mainboard. Mistakes can blow up both the stepper driver _and_ the mbed controller!
50
51 7 Anonymous
Here is the proper orientation for the purple "StepStick" drivers, with heatsinks mounted on top of the A3984 driver IC's:
52 6 Anonymous
53
!stepstick.png!