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6.12.12 Current Controller (Only TNC 426 PB/M, TNC 430 PA/M)
Current controller
without DSP
Current controller
with DSP
December 2001
The TNC has various current controllers, depending on the hardware version.
There are logic units with and without spindle DSP:
n
TNC 426 PB/M max. spindle speed 12 000 rpm, without spindle DSP
n
TNC 426 PB/M max. spindle speed 30 000 rpm, with spindle DSP
n
TNC 430 PA/M max. spindle speed 30 000 rpm, with spindle DSP
7 7 7 7
In MP2401, define the current gain for the spindle at standstill.
Some asynchronous motors run rough at relatively high speeds:
7 7 7 7
In this case, enter in MP2402.x a current gain greater than that in MP2400.x.
The current gain from MP2403 is reached at maximum speed. The current
gain is interpolated linearly between standstill and maximum speed.
• If you enter the value zero in MP2403, then the current gain from MP2401
is effective for the entire speed range.
MP2401
Gain for the spindle current controller at standstill
Input:
0.00 to 9999.99 [V/A]
0: Controller disable
MP2403
Gain for the spindle current controller at maximum speed
Input:
0.00 to 9999.99 [V/A]
0: Value from MP2401
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With MP2421.x adjust the proportional factor, and with MP2431.x the
integral factor of the current controller of the first spindle. (See
"Commissioning" on page 6 – 462).
MP2421.0-1 Proportional factor of the spindle current controller for wye
and delta connection
Input:
0.00 to 9999.99 [VA]
MP2431.0-1 Integral factor of the spindle current controller for wye and
delta connection
Input:
0.00 to 9999.99 [V/As]
Spindle
6 – 213
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