Zero Point Hysteresis - KEB COMBIVERT F5 MULTI Applications Manual

Functional Description
Input selection table
6.2.6 Zero Point Hyste-
resis (An.4;
An.14; An.24)
Value range
Chapter Section Page
6 2 6
Bit -No. Decimal value Input
0
1
2
3
4
5
6
7
8
9
10 1024
11 2048
Through capacitive as well as inductive coupling on the input lines or voltage fluctuations
of the signal source, the motor connected to the inverter can still drift (tremble) during
standstill in spite of the analog input filter. It is the task of the zero point hysteresis to
suppress this.
With the parameters An.4 / 14 / 24 the respective analog signals can be faded out
within a range of 0...10% . The adjusted value is applicable for both directions of
rotation.
If a negative percent value is adjusted the hysteresis acts in addition to the zero point
around the current setpoint. Setpoint changes are accepted only if they are larger than
the adjusted hysteresis.
Fig. 6.2.6
Input Parameter
AN1
AN2
AN3
Date Name: Basis
04.05.04
KEB COMBIVERT F5
1 ST (prog. input Ñcontrol release/Resetì)
2 RST (prog. input ÑResetì)
4 F (prog. input Ñforwardì)
8 R (prog. input Ñreverseì)
16 I1 (prog. input 1)
32 I2 (prog. input 2)
64 I3 (prog. input 3)
128 I4 (prog. input 4)
256 IA (internal input A)
512 IB (internal input B)
IC (internal input C)
ID (internal input D)

Zero point hysteresis

for the further signal processing
10%
-10%
-10%
Value range
An.4 0...±10%
An.14 0...±10%
An.24 0...±10%
Analog In- and Outputs
from interference
suppression filter
10%
fade-out range
Resolution Default value
0,1%
0,1%
0,1%
© KEB Antriebstechnik, 2002
All rights reserved
Terminal
X2A.16
X2A.17
X2A.14
X2A.15
X2A.10
X2A.11
X2A.12
X2A.13
none
none
none
none
0,2%
0,2%
0,2%