#### AlfaGTA

##### Diamond

- Joined
- Dec 13, 2002

- Location
- Benicia California USA

So i am trying to sort out my Harrison 1330 lathe.

Fanuc 21it control.

Issue is that the axis travels exceed the physical length of the screws. Bottoms out and generated a servo overload alarm.

Looking at parameters 1320, 1321, 1322 and 1323.

Do not understand the difference between them.

1320 and 1321 are labeled " Limit 1 Plus, and Limit 1 Minus"

1322 and 1323 are listed as " Limit 2 Plus, and Limit 2 Minus"

Why are there two sets of limits?

Currently the values have mixed sines, is this normal? All the "Plus" entries are "Plus" but the " Minus" settings have both plus and minus values?

1320 Plus =X 318000 Z 1037000

1321 Minus= X -30000 Z 35000

1322 Plus= X 118110 Z 407480

1323 Minus= X -13779 Z 3500

Can someone explain the difference and tell me which parameter i need to change to limit the travels.

Cheers Ross

Fanuc 21it control.

Issue is that the axis travels exceed the physical length of the screws. Bottoms out and generated a servo overload alarm.

Looking at parameters 1320, 1321, 1322 and 1323.

Do not understand the difference between them.

1320 and 1321 are labeled " Limit 1 Plus, and Limit 1 Minus"

1322 and 1323 are listed as " Limit 2 Plus, and Limit 2 Minus"

Why are there two sets of limits?

Currently the values have mixed sines, is this normal? All the "Plus" entries are "Plus" but the " Minus" settings have both plus and minus values?

1320 Plus =X 318000 Z 1037000

1321 Minus= X -30000 Z 35000

1322 Plus= X 118110 Z 407480

1323 Minus= X -13779 Z 3500

Can someone explain the difference and tell me which parameter i need to change to limit the travels.

Cheers Ross

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