Skeletons in my Closet!

[supremewhirlpol]

continuing:

 

9905 - Motor Nominal Voltage

This is the voltage found on the nameplate of the motor.

230VAC

9906 - Motor Nominal Current

This is the current rating found on the nameplate of the motor.

1.6A

9907 Motor Nominal Frequency

This is the normal operating frequency of the motor. I could push the over what the motor is rated for, like what happines in the modern FL machines, but the is not necessary. It creates more problems in the long-run. I keep the value at the default, which is 60Hz.

9908 - Motor Nominal speed

This is the speed (RPM) rating found on the nameplate of the motor. There are 2 speed ratings on the nameplate, one for 50Hz, one for 60Hz. This motor will operate at a max of 60Hz, I use that rating. 3425 RPM.

Group 10: Command Inputs
1003 - Rotation direction lock
3 = Request

Group 11: Reference Select
1105 - EXT REF1 MAX The maximum frequency reference in HZ

I leave the default setting = 60Hz.

Group 12: Constant Speeds
1202 - Const speed 1 11.61Hz -tumble
1203 - Const speed 2 48.96Hz -Spin
1204 - Const speed 3 15Hz (DEFAULT)

My calculations for determining the speeds that I need are approximate.


Group 13: Analog inputs
1301:Minimum AI1
Minimum value of AI1 in percent. Defines relative anaog input value where frequency reference reaches minimum value

0%

Group 15: Analog ouputs
1503:Ao Content Max
Define output frequency where analog output reaches 20mA

I leave this at the default = 50Hz

Group 20: Limits
2003:Max Current
Maximum output current of the VFD
Range: 0.5 * I_n - 1.5 * I_n, where I_n is nominal current of the ACS 140
This is set to 4.5 A

2008:Maximum Frequency
This is the maximum output frequency of the VFD
The range is 0-300 Hz

Over driving the motor is not necessary

I set it to 60 Hz

Group 21: START/STOP
2102: Stop function
These are the conditions during motor stopping
I choose 1 = coast, rather than using dynamic braking

Group 22:Accel/Decel
2202:Accelerate Time 1
Ramp 1: time from zero to max frequency
10.0sec

2203ecelerate Time 1
Ramp 1: time from max frequency to zero
5.0sec

2204:Accelerate Time 2
Ramp 1: time from zero to max frequency
60.0sec

2205ecelerate Time 2
Ramp 1: time from max frequency to zero
60.0sec

Group 26:
2606: U/f below field weakening point
I keep this value at the default, as I want constant torque
1(LINEAR)

 

[Jsneaker]

CHINA? AARGH!

I am so sick of seeing everything made in the United States of China! Thanks to bureaucratic, money-hungry unions, the USA is no longer competitive.

 

[supremewhirlpol]

Competitive? That depends on where you look! They send tons of their kids over here to OUR colleges. They have agencies that forge and create false information just so their kids look good enough on paper to get in the finest schools here. Most of the chinese kids in the US for education purposes are nice, but they lack common sense. The US hasn't been milked dry yet, but we aren't far from it.

 

[supremewhirlpol]

Time to get rid of more unnecessary useless proprietary GE crap! I make my own generic idler pulley. I use 1/4"? thick angle iron left over from another project.

 

[supremewhirlpol]

/

 

[supremewhirlpol]

Time to cut it. Lots of flying metal and sparks!

 

[supremewhirlpol]

Very hot! Still glowing.

 

[supremewhirlpol]

]

 

[supremewhirlpol]

Time to paint the bracket.

 

[supremewhirlpol]

painted black!

 

[supremewhirlpol]

use threaded rods and locking nuts.

 

[supremewhirlpol]

Start relay moved, more things added. Space starting to get tight, still have things to add.

 

[supremewhirlpol]

Idler pulley has internal bearing.

 

[supremewhirlpol]

Use the lock nuts to your advantage to change the position of the pulley.

 

[supremewhirlpol]

I use a spring for tension.

 

[supremewhirlpol]

Oh gee, should I really reveal what I use to control the VFD?

 

[qualin]

This is a much more elegant system, I'll admit. I had to scroll through your whole thread and see how you've evolved this machine. It is incredible the amount of work you've put into this machine so far.

Keep it up.. I'm certainly interested in seeing the final product!

 

[supremewhirlpol]

Oh gee, should I really reveal what I use to control the VFD

Ummmm... hello. Anyone?

 

[toploader55]

Hi Melvin

What are you going to use to control the VFD ?

Your work is truly facinating. Eddie

 

[supremewhirlpol]

I think I may have fallen off my limb.

Eddie:
I thought you'd never ask! What kept you?

I use Siemens LOGO! brick PLC.