Lenze 9200 Series Operating Instructions Manual page 53

Speed controller setting
Set a low speed set value. Enable the controller release (close
RFR switch or apply a voltage of 13...30 V to X5 terminal 28). The
speed controller can now be set. In case of uncontrolled motor
running (oscillation etc.), the drive can be immediately stopped by
pressing the STP key. After reducing the gain adjustment V
C070, release the controller again using SH+STP.
• C070 Gain adjustment Vpn
Increase V until the drive becomes unstable (motor noise and
pn
LED I illuminated), then reduce V
max
drive operates smoothly. Read the V
third of the value.
Increase the speed set value. If the motor speed does not follow
the higher speed set value, but stays at 50...300 rpm, the drive
must be disconnected from the mains and after a period of 5
min, the motor connections U and V must be interchanged.
Switch on the mains and readjust the gain.
• C071 Integral action time of the speed controller
Factory setting optimized to the torque loop. It may be
necessary to adjust higher values if the field weakening range
is completely used or if non-adapted motors are employed. For
higher time constants in the speed control loop (e.g. for chain
drives), it may also be necessary to readjust the integral action
time. To change the integral action time, select the extended
code set -2- under code C000. Increase T
stable. Read T and adjust to approx. double the value.
n
• C072 Amplification of the difference component of the
speed controller.
This adjustment is only necessary if the time has been set to a
larger time constant. The difference component of the the speed
controller is used for compensation of the time behaviour of the
torque control circuit. The adjustment of the difference
component is only possible in the extended code set -2-.
Change K until achieving optimum control behaviour.
d

pn
amplification until the
pn
value and adjust to one
pn
until the drive is
n
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