Lenze 8400 - Manual (Page 1194)

18 Function library
18.1 Function blocks | L_ComparePhi_1
1194
Lenze · 8400 protec HighLine · Reference manual · DMS 3.0 EN · 03/2013 · TD05
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18.1.28.1 Function 1: dnIn1 = dnIn2
This function compares two signals with regard to equality. It can, for instance, provide the
comparison "actual speed equals setpoint speed " (n
act
= n
set
).
• Use C01672 to set the window within which the equality is to apply.
• Use C01671 to set a hysteresis if the input signals are not stable and the output oscillates.
[18-12] Function 1: Switching performance
[18-13] Function 1: Example
 C001671 : Hysteresis
 C001672 : Window
TRUE
FALSE
bOut
dnIn2_p dnIn1_p
Œ  Œ 
 C001671 : Hysteresis
 C001672 : Window
dnIn1_p
dnIn2_p
TRUE
FALSE
bOut
t
t
Œ


Œ