Lenze 9325 - Calculation and Setting of the Times Tir and Tif; Loading of the Ramp Generator

Function block library
7-200

SHB9300CRV EN 2.0
7.6.65.1 Calculation and setting of the times T
ir
and T
if
The acceleration time and deceleration time refer to a change of the output value from 0 to 100 %.
The times T
ir
and T
if
to be set can be calculated as follows:
100%
0
t
ir
t
if
T
ir
T
if
t
RFG1-OUT
[%]
w1
w2
T
ir
 t
ir
100%
w2  w1
T
if
 t
if
100%
w2  w1
Fig. 7-164 Acceleration and deceleration times of the ramp generator
Here, t
ir
and t
if
are the desired times for the change between w
1
and w2. The calculated times T
ir
and
T
if
can be set under C0671 and C0672.
7.6.65.2 Loading of the ramp generator
The ramp generator can be initialized with defined values via the inputs RFG1-SETand RFG1-LOAD.
l As long as the input RFG1-LOAD = HIGH, the input RFG1-SET is switched to the output.
l If the input RFG1-LOAD = LOW, the ramp generator accelerates from this value to its input
value via the set T
i
times.
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