Looking for help with a Mitsubishi Inverter

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ashesman
Posts: 395
Joined: Thu Dec 03, 2020 4:54 am
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Re: Looking for help with a Mitsubishi Inverter

Post by ashesman »

I think the analog output is only capable of +/-10V. Make sure you VFDs maximum frequency limit is set to a sensible value, say 65Hz, then you never have to worry it will over speed the motor.

You could try set both high and low range max RPM to 3000, then in the MDI and do M3 S1500. You should see 5V output (if your gear ratio is 1:1).

If you really want to do some advanced debugging, open the PLC inspection (Ctrl+E) on the main CNC12 screen and add SpinSpeedCommand_FW (usually FW6) to the watch list. That will tell you the spindle speed that CNC12 is commanding. SpinRangeAdjust_FW shows the current gear ratio used. Refer to the code snippet below.

Code: Select all

;------------------------------------------------------------------------------
                             ZeroTo5Or10Stage
;------------------------------------------------------------------------------
;----------------------------------------------------------------
; Convert Spindle "S" command to 16 bit value for output to DAC
;----------------------------------------------------------------
; Commanded Spindle speed (includes override factor) is sent down from CNC11
; in SV_PC_COMMANDED_SPINDLE_SPEED.  This value needs to be converted to a
; 16 bit value (0-65535) where full scale = SV_PC_CONFIG_MAX_SPINDLE_SPEED.

;Display calculated RPM value on PC
IF True_M THEN SV_PLC_SPINDLE_SPEED = SpinSpeedCommand_FW

;Convert RPM to 16 bit value
IF True_M THEN SixteenBitSpeed_FW = SpinSpeedCommand_FW/RPMPerBit_FW

; Factor in gear range
IF True_M THEN SixteenBitSpeed_FW = (SixteenBitSpeed_FW/SpinRangeAdjust_FW)

;Convert to integer word for DAC & I/O display
IF True_M THEN SixteenBitSpeed_W = SixteenBitSpeed_FW

; Bound min to 0, max to 65535
IF SixteenBitSpeed_W < 0 THEN SixteenBitSpeed_W = 0
IF SixteenBitSpeed_W > 65535 THEN SixteenBitSpeed_W = 65535

; Only output to DAC here if spindle orient is not working otherwise spindle orient stage drives DAC
IF !SpindleOrientFastStage THEN WTB SixteenBitSpeed_W SpinAnalogOutBit0_O 16
If you have set gear ratios that are not 1:1 then the commanded RPM at the motor will be what it needs to be to get the correct spindle RPM. Set gear ratios back to 1:1 if you just want to get them motor going at the commanded speed first.
Clutch57
Posts: 8
Joined: Wed Jul 14, 2021 6:03 pm
Acorn CNC Controller: No
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CPU10 or CPU7: No

Re: Looking for help with a Mitsubishi Inverter

Post by Clutch57 »

I cannot even get it run the spindlebenchtest.cnc because now it is telling me I am running the free program and need to upgrade. So what I am doing and it is all in manual, is simply running the spindle in using the software MPG, it is at 50% or lower and then I bring it up to 50%. I did change the 1720 to 1500 and that seems to have corrected the runaway issue for now. I will tach it and see how close we are now. Thank you for your help.
ashesman
Posts: 395
Joined: Thu Dec 03, 2020 4:54 am
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Re: Looking for help with a Mitsubishi Inverter

Post by ashesman »

You should have been sent a license by centroid to activate your software. Check through your emails or contact centroid again.

Until then just send commands in the mdi if it will let you. M3 s1500 to start at a500 rpm m5 to stop m4 s1500 for reverse
Clutch57
Posts: 8
Joined: Wed Jul 14, 2021 6:03 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Looking for help with a Mitsubishi Inverter

Post by Clutch57 »

I do have one sent from Centroid and just tried importing it again, it still says "Free" on the Mill software level line, all the special features are locked out. I did inquire about this early on, I wanted to make sure we had the right software to do the work and I was told it came with the purchase on the "All in One", is there somewhere else I should go to see what is up?
ashesman
Posts: 395
Joined: Thu Dec 03, 2020 4:54 am
Acorn CNC Controller: No
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DC3IOB: No
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Re: Looking for help with a Mitsubishi Inverter

Post by ashesman »

Just email Centroid direct. They will get your license sorted quickly.
cncsnw
Posts: 3763
Joined: Wed Mar 24, 2010 5:48 pm

Re: Looking for help with a Mitsubishi Inverter

Post by cncsnw »

Even with the "Free" license you should be able to use the F3/MDI prompt to run things like "M3 S750" in Auto spindle mode.

You should take a moment to update your CNC12 software to v4.20. There were a handful of bug fixes since the "levels" scheme was introduced with v4.16. I don't recall if any of them had to do with importing license files, but it would be a good idea to keep current nonetheless.
Clutch57
Posts: 8
Joined: Wed Jul 14, 2021 6:03 pm
Acorn CNC Controller: No
Allin1DC CNC Controller: Yes
Oak CNC controller: No
CNC Control System Serial Number: none
DC3IOB: No
CNC12: Yes
CNC11: No
CPU10 or CPU7: No

Re: Looking for help with a Mitsubishi Inverter

Post by Clutch57 »

Thanks for all the help, I did get the license upgraded to Pro, it was supposed to be that anyway but for some reason it didn't import correctly when I put the first license dat file. I will look into the software update as well, this unit has no network connectivity due to company policies.
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