Function library
Torque (torque control)
Setpoint processing
351
EDBCSXS064 EN 4.0
12.28.3
Setpoint processing
12.28.3.1
Selecting the source for the torque setpoint
The "Torque" function block is supplied with the torque setpoint via the input
TORQUE−NSET.NSet (code C7531/2). The valid values are within the decimal range ±32767.
The torque setpoint is conditioned by a ramp function generator and special controllers.
12.28.3.2
Setting acceleration and deceleration times
The torque 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. 12−35
Diagram for acceleration and deceleration time
Code
Possible settings
IMPORTANT
No.
Designation
Lenze/
{Appl.}
Selection
C0012 TIR (ACC)
0.000
Acceleration time for the
l
speed setpoint (for "speed
control")
l
torque setpoint (for "torque
control")
0.000
{0.001 s}
999.999 Relating to speed variation
0 rpm ... n
max
(C0011)
C0013 TIF (DEC)
0.000
Deceleration time for the
l
speed setpoint (for "speed
control")
l
torque setpoint (for "torque
control")
0.000
{0.001 s}
999.999 Relating to speed variation
0 rpm ... n
max
(C0011)
