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

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23 Aug 2018 08:35 #116476 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Hmmm, I sent a reply to this but something must gone wrong.

Anyways I am not 100% sure it is a Dahlander wound motor but I can`t find any details on this motor. So I am assuming it is.



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23 Aug 2018 09:34 #116477 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
This is what I think will be the solution to get most out of speed range without too many gears/switches to handle.

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Motor in Hi only for A and B in Hi/Lo gear ~1001 to 2500rpm

Motor in Lo for B to E in Hi/Lo gear ~80 to 1000rpm
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23 Aug 2018 12:44 #116485 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Andy

Is this close to a working comp with the new arrangement of gears and motorspeed + part of hal??
component gearblocker;

pin in bit spindle-enable-in;
pin out bit spindle-enable-out;
pin in float spindle-speed-in;
pin out float motor-speed-out;

pin in float gear.#.min-speed[12];
pin in float gear.#.max-speed[12];
pin in float gear.#.ratio[12]; >>>>>>>>>>> is this needed as motor goes H/L and small adjusts via VFD within min/max of gear?

pin in bit high-gear;
pin in bit gear-AH;
pin in bit gear-BH;
pin in bit gear-B;
pin in bit gear-C;
pin in bit gear-D;
pin in bit gear-E;



license "gpl";
function _;

;;

FUNCTION(_){
int i;
int gear;
if (spindle_speed_in == 0) return;
switch  (gear_AH  + gear_BH * 2 + gear_B * 4  + gear_C * 8 + gear_D * 16 + gear_E *32) {
case 1: // Gear AH
    gear = (high_gear != 0) ? 1 : 7;
    break;
case 2: // Gear BH
    gear = (high_gear != 0) ? 2 : 8;
    break;
case 4: // Gear B
    gear = (high_gear != 0) ? 3 : 9;
    break;
case 1: // Gear C
    gear = (high_gear != 0) ? 4 : 10;
    break;
case 1: // Gear D
    gear = (high_gear != 0) ? 5 : 11;
    break;
case 1: // Gear E
    gear = (high_gear != 0) ? 6 : 12;
    break;
case else: // gear selection is bitmasked to be able to spot double-engagement
    gear = 0;
}

if (spindle_speed_in >= min_speed(gear) && spindle_speed_in <= max_speed(gear)) {

    motor_speed_out = spindle_speed_ * gear_ratio(gear);
    spindle_enable_out = spindle_enable_in;
} else {
    motor_speed_out = 0;
    spindle_enable_out = 0;
}
}



hal

net input-ah-signal => gearblocker.0.input-ah  <=  hm2_7i76e.0.7i76.0.0.input-09
net input-bh-signal => gearblocker.0.input-bh  <=  hm2_7i76e.0.7i76.0.0.input-10

net input-ah-signal => hm2_7i76e.0.7i76.0.0.output-10
net input-bh-signal => hm2_7i76e.0.7i76.0.0.output-10


net input-b-signal => gearblocker.0.input-b  <=  hm2_7i76e.0.7i76.0.0.input-10
net input-c-signal => gearblocker.0.input-c  <=  hm2_7i76e.0.7i76.0.0.input-11
net input-d-signal => gearblocker.0.input-d  <=  hm2_7i76e.0.7i76.0.0.input-12
net input-e-signal => gearblocker.0.input-e  <=  hm2_7i76e.0.7i76.0.0.input-13

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24 Aug 2018 11:19 #116532 by andypugh
Replied by andypugh on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Well, the repeated case 1: is a definite fault. Didn't I post an updated version?

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24 Aug 2018 11:22 #116533 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Oboy that´s a typo from my part as I did copy and paste.

No I have not seen any updated version.

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24 Aug 2018 11:24 #116534 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Hope this part is more OK
FUNCTION(_){
int i;
int gear;
if (spindle_speed_in == 0) return;
switch  (gear_AH  + gear_BH * 2 + gear_B * 4  + gear_C * 8 + gear_D * 16 + gear_E *32) {
case 1: // Gear AH
    gear = (high_gear != 0) ? 1 : 7;
    break;
case 2: // Gear BH
    gear = (high_gear != 0) ? 2 : 8;
    break;
case 3: // Gear B
    gear = (high_gear != 0) ? 3 : 9;
    break;
case 4: // Gear C
    gear = (high_gear != 0) ? 4 : 10;
    break;
case 5: // Gear D
    gear = (high_gear != 0) ? 5 : 11;
    break;
case 6: // Gear E
    gear = (high_gear != 0) ? 6 : 12;
    break;
case else: // gear selection is bitmasked to be able to spot double-engagement
    gear = 0;
}

if (spindle_speed_in >= min_speed(gear) && spindle_speed_in <= max_speed(gear)) {

    motor_speed_out = spindle_speed_ * gear_ratio(gear);
    spindle_enable_out = spindle_enable_in;
} else {
    motor_speed_out = 0;
    spindle_enable_out = 0;
}
}

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24 Aug 2018 11:28 #116535 by andypugh
Replied by andypugh on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
The version here:
forum.linuxcnc.org/39-pncconf/33069-help...ing?start=460#116030

Should work better.

But doesn't actually disallow high speed in low gears.

But the other component does a better job of suggesting which gear should be used.

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24 Aug 2018 11:35 #116537 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
Same same but different mine is.

I have yours as a base but now motor speeds HI and LO needs to be implemented.

Have a closer look at
forum.linuxcnc.org/39-pncconf/33069-help...ing?start=560#116477

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27 Aug 2018 11:58 #116645 by tecno
Replied by tecno on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
This compiles, but I would like to know what following lines actually does (as I think it is wrong).

pin in float gear.#.ratio[12];
motor_speed_out = spindle_speed_in * gear_ratio(gear);

As the spindle should go max at HI/LO motorspeed on each gear max and only adjust to min speed of that gear via VFD.



component GB_2speed;

pin in bit spindle-enable-in;
pin out bit spindle-enable-out;
pin in float spindle-speed-in;
pin out float motor-speed-out;

pin in float gear.#.min-speed[12];
pin in float gear.#.max-speed[12];
pin in float gear.#.ratio[12]; 
pin in bit high-gear;
pin in bit gear-AH;
pin in bit gear-BH;
pin in bit gear-B;
pin in bit gear-C;
pin in bit gear-D;
pin in bit gear-E;

license "gpl";
function _;

;;

FUNCTION(_){
int gear;

if (spindle_speed_in == 0) return;
switch  (gear_AH  + gear_BH * 2 + gear_B * 4  + gear_C * 8 + gear_D * 16 + gear_E *32) {
case 1: // Gear AH
    gear = (high_gear != 0) ? 1 : 7;
    break;
case 2: // Gear BH
    gear = (high_gear != 0) ? 2 : 8;
    break;
case 3: // Gear B
    gear = (high_gear != 0) ? 3 : 9;
    break;
case 4: // Gear C
    gear = (high_gear != 0) ? 4 : 10;
    break;
case 5: // Gear D
    gear = (high_gear != 0) ? 5 : 11;
    break;
case 6: // Gear E
    gear = (high_gear != 0) ? 6 : 12;
    break;
default: // gear selection is bitmasked to be able to spot double-engagement
    gear = 0;
}

if (gear >= 0 && spindle_speed_in >= gear_min_speed(gear) && spindle_speed_in <= gear_max_speed(gear)) {
    motor_speed_out = spindle_speed_in * gear_ratio(gear);
    spindle_enable_out = spindle_enable_in;
} else {
    motor_speed_out = 0;
    spindle_enable_out = 0;
}
}

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28 Aug 2018 12:24 #116704 by andypugh
Replied by andypugh on topic Help needed to get my 7i76E + 7i85S + 7i73 on my mill going.
The cases need to be 1, 2, 4, 8, 16 etc.
(Like the updated version that I posted, and gave you a link to).

Are you saying that you want to always run the VFD at 50 Hz?

The code that you have highlighted is intended to calculate the motor speed for the current spindle speed. as input it has a HAL pin where you need to set the ratio for each gear.

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