KEB COMBIVERT F5-A, Applications Manual, Page: 459 / 552

Special functions
© KEB, 2012-10 COMBIVERT F5-A, -E, -H Page 7.15 - 27
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PID controller KP (cn.04)
Determines the proportional gain factor in the range of 0,00...250,00.
PID controller KI (cn.05)
Determines the integral gain factor in the range of 0.000...30.000.
PID controller KD (cn.06)
Determines the differential gain factor in the range of 0.000...250.00.
PID positive limit (cn.07), PID negative limit (cn.08)
The maximum positive manipulated variable in the range of -400.0...400.0 % is specified with cn.07, the maxi
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mum negative manipulated variable in the range of -400.0...400.0 % with cn.08.
PID fading time (cn.09)
Thereby the controller intervention can be linerarly increased at the start or linearly decreased at the reset of
fading. The time refers to 100% controller output value. If an input is programmed to „fade in reset (cn.13)“, the
fade in is counted down when the input is active and counted up when the input is inactive.
If „- 0.01“ is adjusted fade in is calculated in accordance with the following formula:
Fade in factor = f
setting
(ru.02) / max. setpoint (oP.10/11)
The function is only active if the technology controller is used as process controller (cS.00 Bit 0...2 = 1). The
fading time is 0 if it is used as setpoint controller.
PID reset condition (cn.10)
The reset condition of the PID controller can be preset via cn.10. Simple speed controls for both directions of
rotation can be realized thereby.
cn.10: PID reset condition
Value Explanation
0 PID controller is not reset
1 PID controller = 0 (constantly reset)
2 PID controller is reset if the modulation is off
Value „2“ must be adjusted for speed control in order that the I-component of the controller is reset at LS or nOP.
Value „1“serves primary for the start-up, in order to reset the controller manually.
Reset of the controller via digital inputs (cn.11...13)
The total controller, the I-component, as well as the controller fading can be reset via the digital inputs. The
fade-in time is valid at reset of fading. For that the decimal value of the corresponding inputs must be entered