Chapter 6: SERVICE-INFORMATION
Page 24 of 30
Operating Manual FU3AM-03
6.2 Configuration und useful information on parameters
All parameters may be changed only when the controller is not enabled!
6.2.1
Mode
6.2.1.1 Static
The inverter operated controlled; i.e., depending on the input set value an output voltage is
output according to the characteristic curve (see Section 6.2.2).
6.2.1.2 Controller mode
For controller mode operation feedback with the pulse generator is required. Over param-
eters n-nominal, number of poles, the motor and the desired nominal speed is set. The pa-
rameter number of strokes defines the sensor resolution of the attached impulse device for
speed feed-back, The control properties can be influenced with the parameters KPn (pro-
portional part) and Kln (integral part).
If the feedback jitters, i.e. indicates speed fluctuations which are not present, these can be
smoothed by means of the speed actual value filter. The parameter ‘t-n-Act.’ specifies the
time constant for this filter.
The speed controller’s control variable affects the inverter’s characteristic curve, but ex-
cessive displacements of the characteristic curve must be avoided; otherwise the motor
may exceed its breakdown torque. The limit is imposed by means of the ‘Influence’ param-
eter.
The two parameters ‘Threshold Nom.-Act.’ and ‘t-Nom.-Act’ relate to the ‘Nom.-Act. OK’
signal contact. The maximum permissible speed deviation from the set point is specified by
‘Threshold Nom.-Act.’; ‘t-Nom.-Act.’ defines how long an excessively high speed deviation
is tolerated (e.g. during start-up). In the static mode, the signal output is permanently
closed.
6.2.1.3 f-Takt
The pulse frequency of output stage is to adjust by the parameter f-Takt.
Lower cycle frequency
=
better device efficiency
Higher cycle frequency
=
lower current ripple
=
quieter running
!
