4 evaluation of the output signal, 5 comparison function "actual value = setpoint, Evaluation of the output signal – Lenze 8400 StateLine User Manual
Page 978: Comparison function "actual value = setpoint, 17 function library
17
Function library
17.1
Function blocks
978
Lenze · 8400 StateLine · Reference manual · DMS 12.0 EN · 06/2014 · TD05/TD14
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17.1.39.4 Evaluation of the output signal
After the limitation, the output signal is evaluated with the influencing factor nInfluence_a. The
evaluation is activated/suppressed along a ramp when the bEnableInfluenceRamp input is set to
TRUE. The ramp times are set with the parameters "Influence acceleration time" (
) and
"Influence deceleration time" (
).
17.1.39.5 Comparison function "Actual value = setpoint"
If setpoint and actual value are identical and there is no system deviation, the bSetEqAct status
output is set to TRUE.
• The hysteresis of the comparison function has a fixed value of 1 %.
•
From version 06.00.00 onwards
, the symmetrical window around the setpoint for the
comparison function can be set in
(Lenze setting: 2 %).
[17-20] Comparison function: Switching performance
[17-21] Comparison function: Example
Hysteresis (1 %, fixed value)
: Window
TRUE
FALSE
bSetEqAct
Set value
Act value
Hysteresis (1 %, fixed value)
: Window
Act value
Set value
TRUE
FALSE
bSetEqAct
t
t