The compensation move is(for me at least), when the 4 leadscrews align the bed. It do the 4 probe point, then it goes down, then it does the compensations, then it goes to the point I configured.

Not when XY moves.
The bed compensation goes as probe the 4 points, the bed moves away a bit, then the bed compensation happens, and then the printer moves the desired point. When the probing moves happens, there is no hearable step loss, but when the compensation move happens, there is hearable loss.

Hello,

First of all, my printer is custom built, and for some reasons I had to change my buildplate from 10mm aluminium to a 15mm steel sheet. Now its about 35 kgs, give or take some, as the plate size is 760x700, and the printer itself 800x800x2200 outer sizes with 550x500x~800 buildsize. I have DuetWifi and Duex5(Z's only), 1x, 1y 2E and 4 independent Z motors(Nema 17, 0.5 Nm, 1,8°) and TR 12x3 threaded rods directly driven, with linear rails.

And now the problem itself:
Motors can move good, but when I give G32, the probing finishes, then the compensation move seems to happen too fast or with less torque, so its move some but lost some steeps(about 0,1-0,3 mm off each). And its obviously not really good.

The solutions I tried: I slowed down my acceleration to 2 mm/s^2 (from 40), and crank my amp from 1800 to 2800(its the max since the motors overheating if i crank it up more). (With this I also lowered the max Z speed form 200 to 50)
The change microstepping from 16 I1 to 8 or 4, its getting loud, the gap lowered a bit, but not much(from the 0,4-0,5 range to 0,1-0,3)
I also lowered the probing fed from 20 to 10, but this doesn't made any change.
Firware version: 1.19.2, with 1.19.3 WebInterface version.

I know stronger motors or if I gear them, probably solves the issue, but I would be happy if I can solve it with a software change, and not with a hardware one, since I should printing at the weekend.
Regards.

1.19.3 webcontrol as well, or thats nothing?

1.19 /1.19.2 since these was marked as latest stable. Should I upgrade to 1.20b1 then?

I use a 4 Z rod machines, for a while its working fine. Today I start the machine, and ran into the error in the picture. Its goes always in a 0,4mm zone but for understandably reasons thats not acceptable.
https://drive.google.com/file/d/0B8gTElAzeWk1bVF6THhQVjg5NHM/view?usp=sharing

Problem solved after a firmware update. The Gcode page doesn't tell it, but its seems not working with 1.8.1. Updated to 1.9.2/1.9 and workinf beautifully.
I have some wifi problems now, but I can live with that(duet doesnt really want to connect automatically to my router, and I have to start the wifi module manually)

@dc42:

I don't see a M671 command in your config.g file. See Bed_levelling_using_multiple_independent_Z_motors.

Its after the Drives section and just before the Heaters.

Dear all,
I ran into several problems during the setup, but now its working. The machine is about 550x590x800 build size. 0,51 nm 2A NEMA17, dual head, 4 independent Z motors.
The problem is, G32 not start autotune my Z rods. It does the probing and the web interface shows the correct map, but then its not start the autotune. Config file, bed and heightmap included.
And photo attached from the board. And I didnt understand why motor mapping works like this. And the Zprobe was moved to the Zprobe input from the E endstop, because it dont want to work neither of the E endstop connectors.
The Board:
https://goo.gl/yP6Bxh

The Config:

[[language]]
; Configuration file for Duet WiFi (firmware version 1.17)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Fri Aug 25 2017 14:31:48 GMT+0200 (W. Europe Standard Time)

; General preferences
M111 S0 ; Debugging off
G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M555 P2 ; Set firmware compatibility to look like Marlin
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X550 Y590 Z800 S0 ; Set axis maxima
M669 K0		;Carthesian

; Endstops
M574 X1 Y1 Z2 S1 ; Define active high microswitches
M558 P5 X0 Y0 Z1 H3 F200 T12000 R0.2 ; Set Z probe type to unmodulated, the axes for which it is used and the probe + travel speeds
G31 P600 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height

; Drives
M569 P0 S0 ; Drive 0 goes forwards X
M569 P1 S1 ; Drive 1 goes forwards Y
M569 P2 S1 ; Drive 2 goes forwards E0
M569 P3 S0 ; Drive 3 goes backwards E1
M569 P4 S1 ; Drive 4 goes forwards ?
M569 P5 S1 ; Drive 5 goes forwards Z0
M569 P6 S1 ; Drive 6 goes forwards Z1
M569 P7 S1 ; Drive 7 goes forwards Z2
M569 P8 S1 ; Drive 8 goes forwards Z3

M584 X0 Y1 Z5:6:7:8 E3:4 	;Drive Maps

M350 X16 Y16 Z16 E16:16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z1066.667 E420:420 ; Set steps per mm
M566 X600 Y600 Z100 E100:100 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000 Y12000 Z600 E3000:3000 ; Set maximum speeds (mm/min)
M201 X1500 Y1500 Z200 E250:250 ; Set accelerations (mm/s^2)
M906 X1800 Y1800 Z1800 E1800:1800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S20 ; Set idle timeout

M557 X5:545 Y5:585 S80 ; Define mesh grid
M671 X-45:625:625:-45 Y-40:-40:690:690 S5 P3

; Heaters
M143 S390 ; Set maximum heater temperature to 390C
M141 H7 ; Assign chamber heater to heater 0
M301 H7 P-1 ; Set heater 7 to bang-bang mode
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M305 P2 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 2
M305 P7 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 7

; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C
M563 P1 D1 H2 ; Define tool 1
G10 P1 X0 Y0 Z0 ; Set tool 1 axis offsets
G10 P1 R0 S0 ; Set initial tool 1 active and standby temperatures to 0C

; Network
M550 PDuet ; Set machine name
M551 P1234 ; Set password
M552 S1 ; Enable network
M587 SZyXEL P"12345678" ; Configure access point. You can delete this line once connected
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Fans
M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1:2:7 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 H1:2:7 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Custom settings are not configured

The Bed

[[language]]
G28

G30 P0 X25 Y25 Z-99999
G30 P1 X25 Y565 Z-99999
G30 P2 X525 Y565 Z-99999
G30 P3 X525 Y25 Z-99999 S4

The heightmap:

[[language]]
RepRapFirmware height map file v1 generated at 2017-08-19 09:46, mean error 0.04, deviation 0.14
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
5.00,545.00,5.00,585.00,-1.00,80.00,7,8
 -0.054,  0.003,  0.054, -0.027, -0.133, -0.207, -0.260
  0.136,  0.197,  0.295,  0.146, -0.039, -0.102, -0.135
  0.222,  0.267,  0.314,  0.218,  0.072,  0.026, -0.017
  0.195,  0.204,  0.216,  0.177,  0.112,  0.070,  0.035
  0.133,  0.151,  0.168,  0.152,  0.117,  0.070,  0.044
  0.064,  0.072,  0.102,  0.096,  0.068,  0.027, -0.010
 -0.025, -0.007,  0.030,  0.027, -0.004, -0.049, -0.104
 -0.117, -0.105, -0.088, -0.088, -0.139, -0.201, -0.243

I have a strange idea, since i have acces a pile of 24v 2,5 amp psu, can i use 5 of them to my printer(1 for the duet and 4 for motors? Or i have to get a 24v 10 amp one?
Regards