HEIDENHAIN TNC 407 (243 020) Technical Manual - Manual (Page 728)

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TNC 407/TNC 415/TNC 425 3 Machine interfacing 01.98
If the motor and drive spindle are linked by a toothed belt then an initial overshoot will occur in the
step response – this must be disregarded for trimming purposes.
Monitoring the speed controller
Once the proportional and integral components of the speed controller have been trimmed, a
suitable value must be calculated for MP1910.x.
Example: MP1920.x = 180 MP1940.x = 60
For MP1910.x with a Vlimit = 15 V, the following value is obtained:
MP1910.x =
Vlimit
MP1920.x * 9.7 µV
= 9000