[SOLVED] MesaCT problems with 7i96 pwm spindle

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1 year 5 months ago #328909 by oddwick
thanks tom, i tried some changes in this section and those didnt work, but later on last evening i finally got it working, but i dont remember exactly which ones i changed. when i get back to the shop later today, i will log all the keys i modified and put a list together for anyone with this model of vfd. also, there was some keys where i could adjust the scale of the pwm so at the anything under 5v gives me 12k rpm and i get 400mhz at 9.45v
The following user(s) said Thank You: tommylight

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1 year 5 months ago #329376 by oddwick
So it was a busy week, but here is the list of keys that I modified to get the spindle running.  Some of the values are specific to the spindle itself.  My spindle is 2.2kw air cooled, so my max rpm is 24000 and the minimum rpm is 12000.  also my pwm range is from about 5v to around 9.6, so i adjusted the values is the 5 section to make my max voltage equal 24000 rpm. the values in the parenthesis are the values that i used, but will vary depending on your spindle

P00.01 - 1
P00.03 - [MAX OUTPUT FREQUENCY] (400)
P00.04 - [MAX RUNNING FREQUENCY] (400)
P00.05 - [MIN RUNNING FREQUENCY] (200)
P00.06 - 2 [ANALOG INPUT 2]
P00.07 - 1
P00.10 - 60 
P00.11 - 6 (seconds to accelerate)
P00.12 - 6 (seconds to decelerate)
P00.14 - 4.0 (2.2 KW)

P02.01 - [MOTOR RATED POWER] (2.2)
P02.02 - [MOTOR FREQUENCY] (400)
P02.03  - [MAX RPM] (24000)
P02.04 - [MOTOR VOLTAGE] (220)
P03.05 - [MOTOR RATED AMPS] (6)

with this section, anything under 5v will also give me 50% power, so the spindle can never run less than 12k rpm.  just to be on the safe side, i also set the AI2 settings to the same values (37-40)
P05.32 - 5.00
P05.33 - 50.00
P05.34 - 9.6
P05.35 - 100.0
P05.37 - 5.00
P05.38 - 50.00
P05.39 - 9.6
P05.40 - 100.0

This allows me to use the stop key to override the spindle in case of emergency
P07.04 - 3 
 

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