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Lenze 8400 - LSrfg1

Lenze 8400
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23 1510
17 Function library
17.1 Function blocks | L_SRFG_1
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
17.1.162 L_SRFG_1
This FB is a ramp function generator with S-shaped ramps for limiting the increase over time of
analog signals. The S-shape of the ramps is a result of trapezoidal acceleration.
The ramp function generator is provided with a setting function so that a value can directly be
loaded into the internal ramp generator.
The balanced acceleration/deceleration time is set in C01040
.
An S-ramp time can be set in C01041
for jerk-free acceleration until maximum acceleration is
reached.
At the nDeltaOut_a output, the dy/dt slope of the nOut_a output signal is output.
Inputs
Outputs
Parameters
Designator
Data type
Information/possible settings
nIn_a
INT
Input signal
nSet_a
INT
Starting value for the ramp function generator
Will be accepted if bLoad = TRUE
bLoad
BOOL
Initialise ramp function generator
FALSE With the set acceleration/deceleration time, the ramp function
generator switches over from the value loaded via nSet_a to the
value at nIn_a.
TRUE At the nOut_a output, nSet_a is output.
nDeltaOut_a remains at 0 %.
Designator
Data type
Value/meaning
nDeltaOut_a
INT
Acceleration of the ramp function generator
Internal limitation to ±100 % (100 % 16384)
nOut_a
INT
Output signal
Internal limitation to ±199 % (100 % 16384)
Parameters Possible settings Info
C01040/1
0.001 s 999.999 Acceleration/Deceleration time
Initialisation: 100.000 s
C01041/1
0.001 s 50.000 S-ramp time
Initialisation: 0.200 s
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