KEB COMBIVERT F4-C Applications Manual page 122

Functional Description
Example to AUX-Function
Picture 6.4.2.b Example to AUX-Function
Selection of set value and
rotation direction (oP.0)
Set value sources:
Sources of direction of rotation:
1. Direction of rotation via
parameter oP.3 „Digital
Rotation Setting"
Chapter Section Page
6 4 6
To preset the speed of a drive two potentiometers shall be set. A coarse adjustment
of the set value shall be made with the first potentiometer and a fine adjustment with
the second potentiometer.
1. Connect potentiometer for coarse adjustment of set value to REF
2. Connect potentiometer for fine adjustment to ±REF
3. Reduce the amplification of the ±REF-channel to the desired fine adjustment
(e.g. An.3 = „0,1" for ±10% change)
4. Adjust An.12 so that ±REF serves as AUX-signal (An.12 = „1", see 6.2.7)
5. Adjust the AUX-function so that the analog set value is created from Ref_internal
+Aux_internal (An.13 = „1")
Analog_Set
100%
Fine adjustment
With parameter oP.0 „Selection of set value and direction of rotation" the requuired
set value source can be linked with the corresponding rotation source (see picture
6.4.2).
The possible set value sources are a result of the previously described set values.
Regarding the source of direction of rotation there are three different settings
possibilitie:
oP.3 Display
0 LS
1 F
2 r
Date Name: Basis
KEB COMBIVERT F4-C
28.01.98
Set Value and Ramp Adjustment
±10%
Set direction of rotation
(Low Speed)standstill
(Forward) forward
(Reverse) reverse
REF / ±REF
100%
© KEB Antriebstechnik, 1997
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