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HEIDENHAIN TNC 306 Technical Manual User Manual

Page 239

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2/97

TNC 406/TNC 306

15 Commissioning and start-up procedure

4-139

The following curve represents the ideal response of the tachometer signal:

U [V]

t [ms]

U

max

T

Tacho-signal

1 Overshoot

Given step
function

The following curves show incorrectly adjusted tachosignals:

U [V]

t [ms]

U

max

Several overshoots

Incorrect!

P-component of the subordinate control loop too
high or I-component too low

U [V]

t [ms]

U

max

Incorrect!

Too flat

P-component of the subordinate control loop too
low or I-component too high

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