Lenze 8600 series - Adjustment of the Act. Value Gain; Automatic Adjustment; Manual Adjustment

4.4 Adjustment of the act. value gain
If you use an incremental encoder for Speed control and you have
entered the encoder constant as described under 4.2. (see page
Fehler! Textmarke nicht definiert.) an adjustment of the act.
value gain is not necessary. For tacho act. value, a gain
adjustment is normally required.
4.4.1 Automatic adjustment
To adjust the act. value gain you tan activate an automatic
adjustment under C029. Proceed as follows:
Activate the closed-loop Speed control (COO5) with Pilot control
of the output frequency by the controller reference
(C238 = -l-).
Set the influence of the Pl controller to zero under C074.
Idle running. If this should not be possible, please note that the
Slip of the machine is added as gain error during the automatic
adjustment. If necessary, set manually.
If possible, enter 100% setpoint. If the setpoint is smaller than
10% an auto-adjustment is not possible.
Enable the controller and wait for the acceleration.
Activate the auto-adjustment via CO29 using SH + PRG.
If the auto-adjustment was successful, “--ok--” appears on the
display. If not, please check your settings. With the acceptance
of the auto-adjustment the act. value gain is set under C027.
Set under CO74 the influence of the PI controller such that the
Slip occuring during Operation tan be controlled.
To set the adjustment time and the gain of the Pl controller see
page Fehler! Textmarke nicht definiert..
4.4.2 Manual adjustment
If, for technical reasons, the above described automatic
adjustment in idle running is not possible or too inaccurate, you
tan measure the motor Speed by hand and calculate the required
act. value gain. Proceed as follows:
l Activate the closed-loop Speed control (COOS) with Pilot control
of the output frequency by the controller reference
(C238 = -1-).
l If possible, enter 100% setpoint. If the setpoint is smaller, the
obtainable adjustment result is normally less precise.
l Enable the controller and wait for the acceleration.
Set under CO74 the influence of the Pl controller such that the
Slip occuring during Operation tan be controlled.
l Measure the motor Speed.
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