Lenze 8615E - Manual (Page 82)

4.6 Additional functions
For applications, you use a variety of additional
functions:
Input integral action component 0
Using this function, the integral action component (I-component)
of
the
PI controller
be reset to zero. You activate this
additional function via one of the freely assignable digital inputs.
Fur
information programming of the freely assignable
inputs see page 81.
This function is e.g. useful for applications where a drive to
standstill either after zero and remains in standstill without
the controller being inhibited. By resetting the
I-component, a motor drifting is avoided. If the drive is braked
mechanically with zero setpoint, a resetting of the 1-component
avoids the drive to jerk after releasing the brake.
Output act. value
The digital function act. value = that the controller
deviation between and act. value) is within a
preset range. The thresholds are considered as a window
you determine The value to be entered
refers to (CO1 1).
Code Name Parameter (Factory setting is printed in bold) Acceptance
Window act. 0 . 5 % 0 . 0 % (0.1 100.0 % ON-LINE
v a l u e =
In open-loop control the “setpoint reached” (Controller
is transferred to the function “act. value = setpoint”.
You assign the function to one of the freely assignable digital
Fur
information
programming of the freely
assignable see page 90.
Output act. value 0
The function act. value = 0 that there is no act. value or the
motor does not run. The range, where the function is is
fixed in the form of a window of 0.5% related to
You assign the function to one of the freely assignable digital
Outputs and use it for example to reset the I-component of the Pl
controller. Fur
information programming of the freely
assignable see page
Act. vaiue display
The act. value is displayed According to the
display
of the
1 you select a relative or an
absolute display in Hertz. In open-loop control (without
back) is shown the act. value input is not used.
Monitor Signals
You assign the input and output data of the Pl controller to the
freely assignable monitor if necessary. For closed-loop
control with frequency control, the controller output is
an approximate value
for the motor torque.
l
Controller (total from and
l
Controller act. value via input or
l
Controller output (variable of the Pl controller)
For information programming of the monitor
see page 94.
80