Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

tecno
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8 years 1 month ago #117198 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

tecno wrote: As a side note, homed all my axis and suddenly X is out of order.

Power on but not stiff as I can rotate shaft by hand = no error message on driver.

I found the error = SHIT CONNECTORS!!!!!!
From motor there is a fixed cable and ends in 4-pole connector = bad hooks !! So now I have to do something that fixes this this connection SOLID!

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Hakan
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8 years 1 month ago #117199 by Hakan

Replied by Hakan on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

tecno wrote:
Hakan wrote: I know, but there is no code to set different max speeds when the pin is high or low.
I added that code.

# Motor High
net motor-high-signal <= GB-2speed.0.motor-high
net motor-high-signal => hm2_7i76e.0.7i76.0.0.output-10

Gear setting 10-11-12-13 should activate above as I understood this.

This is not what I call code. These are hal connections.

There is no code in the comp to use anything but 2500 rpm as the max speed.
Add the four lines. Or Andy maybe has an other idea how to do it.

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tecno
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8 years 1 month ago #117201 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Will the 4 lines handle output 10 when needed?

Code:

FUNCTION(_){
	int actual, message, double motor_max_speed;
	int i;
	// These need to be edited to suit the gearbox
	int speeds[15]    = {0,     80,  125,  160,  215,  270,  360,  450,  595,  750, 1000, 1191, 1500, 2500, 0x1P30};
	int reqd_gear[15] = {0x0, 0x01, 0x21, 0x02, 0x22, 0x04, 0x24, 0x08, 0x28, 0x10, 0x48, 0x68, 0x50, 0x70, 0x0};

	if (spindle_speed_in == 0) return;
	actual = (gear_high * 0x40 + motor_high * 0x20  + gear_A * 0x10 + gear_B * 0x08  + gear_C * 0x04 + gear_D * 0x02 + gear_E * 0x01);
	for (i = 0; spindle_speed_in > speeds[i] && i < 14; i++);
	gear_required = reqd_gear[i];
	if (gear_required == actual && gear_required != 0x0){ // We are in the right gear
		spindle_enable_out = spindle_enable_in;
		if (motor_high)
                   motor_max_speed = 2500;
                else
                   motor_max_speed = 1450;
		motor_speed_out = speeds[13] * (spindle_speed_in / speeds[i+1]);

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Hakan
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8 years 1 month ago #117212 by Hakan

Replied by Hakan on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Almost, the "speed[13]" on the last line needs to be replaced as well.

Check forum.linuxcnc.org/39-pncconf/33069-help...ing?start=640#117193

If you have a different max speed than 1450 you can just change to whatever is the max speed.

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tecno
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8 years 1 month ago #117214 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Compiles but will not install

Code:

bengt@CombiMll ~/linuxcnc/configs/GB_2speed $ sudo halcompile  --install GB_2speed.comp
Compiling realtime GB_2speed.c
GB_2speed.comp: In function ‘_’:
GB_2speed.comp:25:23: error: expected identifier or ‘(’ before ‘double’
GB_2speed.comp:38:20: error: ‘motor_max_speed’ undeclared (first use in this function)
GB_2speed.comp:38:20: note: each undeclared identifier is reported only once for each function it appears in
/usr/share/linuxcnc/Makefile.modinc:113: receptet för målet ”GB_2speed.o” misslyckades
make: *** [GB_2speed.o] Fel 1

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tecno
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8 years 1 month ago #117216 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

FUNCTION(_){
int actual, message, motor_max_speed;

deleted word double and now it installs.

S80 now spinning at 63rpm

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tecno
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8 years 1 month ago #117217 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Attachment not found

I have no rpm fb only rps fb, that explaines why gmoccapy does not show rpm meter.

edit//
net spindle-vel-cmd-rpm-abs => gmoccapy.spindle_feedback_bar

Above line only gives numer correct but nothing on colored bar.

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tecno
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8 years 1 month ago #117219 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

I noticed one thing that must be addressed and that is to implement a delay before spindle to start.

If I command S80 and have the correct gear the spindle starts = OK
If I have wrong gear I get prompted to change gear but as soon as I get that gear close or near it starts to spin with the risk of damaging gears within the gearbox. It is in this situation a delay is a must.

How can this be done?

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tecno
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8 years 1 month ago #117240 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Changed value 1450 to 1875 = S80 is very close to 80rpm with a few tenths over.
if (motor_high)
motor_max_speed = 2500;
else
motor_max_speed = 1875;

But there is other problems, see picture below

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Commanded S100
suggestion is wrong gear setting
No output to VFD when High-Gear is involved

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tecno
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8 years 1 month ago #117243 by tecno

Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.

Maybe this is the right medicine to get gear ranges in place?

// These need to be edited to suit the gearbox
int speeds[13] = {80, 125, 160, 215, 270, 360, 450, 595, 750, 1000, 1190, 1500, 2500};
int reqd_gear[13] = {0x01, 0x21, 0x02, 0x22, 0x04, 0x24, 0x08, 0x28, 0x10, 0x48, 0x68, 0x50, 0x70};

for (i = 0; spindle_speed_in > speeds && i < 12; i++);

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