Ramp Function Generator For The Main Setpoint - Lenze 8400 StateLine C Reference Manual

16.1.29.6

Ramp function generator for the main setpoint

The setpoint is now led via a ramp function generator with linear characteristic. The ramp
function generator converts setpoint step-changes at the input into a ramp.
w1, w2 = change of the main setpoint as a function of t
RFG-OUT = output of the ramp function generator
[16-14] Acceleration and deceleration times
 t and t
ir if
 S-ramps are possible by selecting S-ramp times.
 The t /t
ir if
formula:
Setting and selection of Ti times
Via parameters, you can select 16 different Tir and Tif times each for the ramp function
generator.
 The selection is made via the binary coded selection inputs bTI1 ... bTI8:
bTI8
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE
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RFG-OUT
100 %
w2
w1 t
ir
0 %
T
ir
are the desired times for changing between w1 and w2.
values are converted into the required Ti times according to the following
100 %
T t ⋅
----------------------
=
ir ir
w2 w1
–
Selection inputs
bTI4 bTI2
FALSE FALSE
FALSE FALSE
FALSE TRUE
FALSE TRUE
TRUE FALSE
TRUE FALSE
TRUE TRUE
TRUE TRUE
FALSE FALSE
FALSE FALSE
FALSE TRUE
FALSE TRUE
TRUE FALSE
TRUE FALSE
L
8400 StateLine C | Reference manual
Function blocks | L_NSet_1
t
ir
T
ir
and t
ir if
T t
=
if if
Used
Acceleration time
bTI1
FALSE C00012
TRUE C00101/1
FALSE C00101/2
TRUE C00101/3
FALSE C00101/4
TRUE C00101/5
FALSE C00101/6
TRUE C00101/7
FALSE C00101/8
TRUE C00101/9
FALSE C00101/10
TRUE C00101/11
FALSE C00101/12
TRUE C00101/13
Function library
t
100 %
⋅
----------------------
w2 w1
–
Used
Deceleration
time
C00013
C00103/1
C00103/2
C00103/3
C00103/4
C00103/5
C00103/6
C00103/7
C00103/8
C00103/9
C00103/10
C00103/11
C00103/12
C00103/13
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