Function library – Lenze ECSCSxxx User Manual
Page 327
Function library
Speed (speed control)
Setpoint processing
l
327
EDBCSXS064 EN 4.0
12.27.2.2
Setting acceleration and deceleration times
The speed setpoint is led via a ramp function generator. This enables input steps to be
converted into a ramp.
The acceleration time (T
ir
) and deceleration time (T
if
)
refer to a change in speed from "0"
to n
max
(0 ... 100%). The times to be set are calculated according to the formulae:
Acceleration time (code C0012)
Deceleration time (code C0013)
T
ir
+ t
ir
@ 100 %
w2
* w1
T
if
+ t
if
@ 100 %
w2
* w1
[%]
w2
100
w1
0
t
ir
t
if
T
ir
T
if
t
RFG-OUT
ECSXASA001
Fig. 12−30
Diagram for acceleration and deceleration time
In C0101/1 ... 15 and C0103/1 ... 15, 15 time pairs (T
i
times) can be stored additionally. Via
the inputs SPEED−NSET.TIx (C7411/13 ... C7411/16) the T
i
times can be activated:
Signal name
Source for active time pair
SPEED−NSET.TI8
SPEED−NSET.TI4
SPEED−NSET.TI2
SPEED−NSET.TI1
Acceleration
time
Deceleration
time
0
0
0
0
C0012
C0013
0
0
0
1
C0101/1
C0103/1
0
0
1
0
C0101/2
C0103/2
0
0
1
1
C0101/3
C0103/3
0
1
0
0
C0101/4
C0103/4
0
1
0
1
C0101/5
C0103/5
0
1
1
0
C0101/6
C0103/6
0
1
1
1
C0101/7
C0103/7
1
0
0
0
C0101/8
C0103/8
1
0
0
1
C0101/9
C0103/9
1
0
1
0
C0101/10
C0103/10
1
0
1
1
C0101/11
C0103/11
1
1
0
0
C0101/12
C0103/12
1
1
0
1
C0101/13
C0103/13
1
1
1
0
C0101/14
C0103/14
1
1
1
1
C0101/15
C0103/15