Function library
Process controller, current limitation controller
7−55
L
EDB82MV752 EN 5.2
7.8.4 Switching off process controller functions
Process controller switch−off (PCTRL1−OFF)
The process controller output does not send signals as long as this function is active.
Activation
The function must be linked with a digital input signal under C0410/19.
HIGH level at C0410/19 activates the function.
) Note!
In addition to the free configuration under C0410 you can also use the fixed
assignment under C0007 to combine the function with a digital input.
Process controller stop (PCTRL1−STOP)
The process controller output is frozen on the current value when the function is activated. The value
remains unchanged until the function is deactivated.
Activation
The function must be linked with a digital input signal under C0410/21.
HIGH level at C0410/21 activates the function.
Integral action component switch−off (PCTRL1−I−OFF)
The process controller output provides the difference between setpoint and actual value, if necessary
with gain V
P
.
Thus overcontrolled starting and stopping can be avoided. When the controller operates
normally, the integral action component K
I
can be connected.
Application: e.g. dancer position control
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0184* Frequency
threshold
PCTRL1−I−OFF
0.0 0.0 {0.1 Hz} 25.0 If the output frequency < C0184, the
I component of the process controller
will be switched off
0.0 Hz = Function not active
7−53
Activation
Link the function with a digital input signal in C0410/18.
HIGH level at C0410/18 activates the function.
) Note!
In addition to the free configuration under C0410 you can also use the fixed
assignment under C0007 to combine the function with a digital input.
Activation via frequency threshold
Use C0184 to set the required frequency.
If the output frequency falls below the value in C0184, the integral−action component will be switched
off.
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