5
ANTRIEBSTECHNIK
6
4
5
KEB COMBIVERT F4-C
Name: Basis
28.01.98
6
©
KEB Antriebstechnik, 1997
All Rights reserved
Functional Description
Set Value and Ramp Adjustment
Section
Page
Date
Chapter
The AUX-Function offers the possibility to change other set values (Ref-internal, the
absolute digital set value oP.1 or the motor-poti function) by an analog signal (Aux-
internal) within the preadjusted maximum values. At the output of the function stands
the „Analog_Set Value“ signal (see picture 6.4.2) - thus in the subsequent selection
the set value to be changed with An.13 must generally be selected as analog set
value (oP.0 = 0, 1 or 2). The Aux-function provides following possibilities for linkage:
An.13
AUX - Input Function
0
Analog_Set value= Ref_internal; Aux not active
1
Analog_Set value= Ref_in Aux_internal
2
Analog_Set value= Ref_in (Aux_internal/100%) * Ref_internal
3
Analog_Set value= oP.1 + Aux_internal
4
Analog_Set value= oP.1 + (Aux_internal/100%) * oP.1
5
Analog_Set value= Motor-poti + Aux_internal
6
Analog_Set value= Motor-poti + (Aux_internal/100%) * Motor-poti
To adjust a setpoint value two analog set values (±REF und REF), two digital set
values (oP.1, oP.2), the motor-poti function, the profile parameters (Pr.8, Pr.38), the
PI-Control and two channels for the speed detection are available at KEB COMBIVERT
F4-C.
The analog setpoint values are set via ±REF or REF. Chapter 6.2
„Analog In- and
Outputs“ describes the analog signal processing, at the outputs the signals REF-
internal and AUX-internal are available for further processing. The display of the
setpoint value is done in percent in the parameters ru.23 and ru.24.
With parameter oP.1
„Absolute digital set value setting“ a set frequency of -409,5875...
409,5875 Hz can be adjusted.
With parameter oP.2
„Percent digital set value setting“ a set frequency of -100% ...
+100% of the maximum frequency /oP.5 / oP.7) can be adjusted (also see 6.4.3 „Set
Value Calculation“).
Adjustment of absolute set values in rev/min (Pr.8) or percent set value (Pr.38) via
the profile parameters according to DRIVECOM specification (also see 11.2.4.
„DRIVECOM-Profile Parameter“).
With the motor-poti function a set value of -100%...0...100% can be set within the
limits adjusted in parameter oP.4 / oP.5 and oP.6 by way of the digital inputs (see
6.9.13 „Motor-Poti Function“).
At controlled operation the manipulated variable of the built-in PI-controller can be
used as set value signal. The set value signal has a value range of -100%...100% and
is represented by ru.30 (also see 6.11 „Controlled Operation“)
For synchronous speed control channel 1 or channel 2 can serve alternatively as
speed reference. For example, the incremental encoder of the master system is
evaluated via channel 1 and used as setpoint value. The incremental encoder of the
slave drive is evaluated via channel 2 and used as actual speed value (also see 6.11
„Controlled Operation“)
Set value sources
AUX-Function (An.13)
Motor-poti function
Analog set value
Digital set value
Profile parameter
PI-Controller
Speed detection
