Techno CNC Systems

HD Series Troubleshooting & Faultfinding

HD CNC Router
HD Mini CNC Router
Fig. 1
Dust collector hose is arcing to your dust hood.
Check that your dust collector flex hose and metal ducting are properly grounded to the ground rod.

Check that your dust collector flex hose and metal ducting are properly grounded to the ground rod.

In addition, the machine controller should be properly grounded so that system interruption or failure does not occur due to poor ground.
(See Fig. 1.)

Hand held controller display is blank with no power

(This applies to HD, HD Mini, BT/1212 and CNC Plasma with NC Studio Controller.)

Check to confirm the NC Studio controller is good by verifying it has power. It should display illuminated LED lights. To confirm the controller is working properly, place a metal screw driver over any of the (3) axis limit switches, and the input should turn on and off. This verifies the controller has power and is working. If confirmed, replace hand held.

Hand held controller loses power but the rest of the system does not Check the 3 fans on the stepper amplifier to make sure they are all running.
Loud Banging Noise, Cold Motor, Lagging Motor, Out of Square Bad Stepper Driver – Needs Replacement
Machine will not jog or move
  1. Check to see if any of the 3 axes are on a limit switch. This will prevent the machine from enabling.
  2. Shut machine down and manually push the axis off the limit switch.
  3. Re-enable and controller should ask you to reference home.
  4. Hit yes
Spindle is running in reverse speed, meaning that the lowest spindle 'gear' is resulting in the highest rpm, while the highest 'gear' is resulting in the lowest rpm.
  1. Go into the menu and then go to "8.Diagnostics" and "2.Port List".
  2. Scroll down to OUTGY15, OUTGY16, and OUTGY17 and change them from "N" to "P" (press 'shift' to change and 'ok' to enter.)
Make sure you do all three variables. You shouldn't need to reboot. Just back out to the main menu and check it.
Z Axis homes upon startup, but X and Y will not. On the hand held controller the X and Y position indicators show movement.
  1. Check the amplifiers to see if the green LED is illuminated for X and Y. If they are not illuminated, the axis amplifier is not getting power.
  2. Check the fuses on the Power rectifier board. If the fuses are not blown, then the Power rectifier board may be bad.
  HD Fault Finding  
Problem Error Message Solution
When you start the machine it says override0 on the controller Your feedrate is set to zero. Press the #7 on the hand-held controller to increase the feedrate. You will see the feedrate percentage increase in the bottom right corner.
HD Inverter Speed Parameters
05-00  50
05-01  100
05-02  150
05-03  200
05-04  250
05-05  300
HD Mini Inverter Speed Parameters
Parameters  Settings
p01 02
p03 300
p04 300
p05 220
p10 15
p11 15
p17 300
p18 250
p19 200
p20 200
p21 200
p22 200
p23 200
p24 01
p36 300
p37 50
p52 6.9
p64 00
p65 60
p76 00
p148 02
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