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HPC LS3020 connections - July 2012 » History » Revision 15

Revision 14 (jaap, 2012-08-14 16:45) → Revision 15/16 (jaap, 2012-08-14 16:46)

h1. HPC LS3020 connections - July 2012 

 {{>toc}} 

 h2. Wiring diagram 

 Here is a schematic diagram of how everything should be wired up (see message#26): 

 !LaOS-wiring.jpg! 

 h2. Laser ON cable 

 The laser-on cable, as it comes shipped with the laser cutter needs to have one wire switched over, from this: 

 !DSC_3499.jpg! ... to this: !DSC_3500.jpg! 

 It then plugs into the mainboard like this: !laser-on.png! 

 h2. Disabled laser PWM 

 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. 

 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: 

 !DSC_3645.jpg! 

 h2. Y stepper cable 

 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: 
 |Color|Signal|Connect to| 
 |RED|XA+|J18.2 |-RED|XA+|J18.2 A| 
 |BLUE|XA-|J18.3 A| 
 |YELLOW|XB+|J18.4 B| 
 |WHITE|XB-|J18.5 B| 

 !DSC_3647.jpg! 

 h2. Flatcable for X stepper and endstops 

 |_.Pin|_.Signal|_.Connect to| 
 |PIN12|XA-|J24.1 A| 
 |PIN11|XA+|J24.2 A| 
 |PIN10|XB-|J34.3 B| 
 |PIN9|XB+|J34.4 B| 
 |PIN6|COMMON|J34.4 GND| 
 |PIN5|XHOME|J34.2 XHOME| 
 |PIN4|YHOME|J34.3 YHOME| 
 |PIN3|+5V|J34.1 Vsensor| 

 !783px-HPC-flat-cable-pinning.jpg! 

 h2. Stepper driver orientation 

 Be *very* careful how you place the stepper drivers on the mainboard. Mistakes can blow up both the stepper driver _and_ the mbed controller! 

 Here is the proper orientation for the purple "StepStick" drivers, with heatsinks mounted on top of the A3984 driver IC's: 

 !stepstick.png!