Lenze EVF9383 - Manual (Page 180)

Application examples
Traversing for a wire winder
3−10
l
EDSVF9383V−EXT EN 2.0
Remaining path during deceleration and acceleration
The linear ramp function generator in the FB NSET (controlled via the input NSET−RFG−0) decelerates
and accelerates the traversing drive.
Functional sequence
1. If the traversing unit reaches a limit switch (NC contact), the FB R/L/Q detects a change of
direction of rotation.
2. The D−flipflop FLIP1 is set via the FB TRANS1.
3. The input NSET−RFG−0 is activated via the FB OR1 and deceleration starts.
4. When the ramp function generator has been decelerated to zero (NSET−NOUT = 0), the FB
CMP2 enables the calculation of the angle of rotation for the traversing break.
5. When the traversing break is over, the D−flipflop FLIP1 is reset via the FB INT1
(INT1−DOUT = HIGH).
6. The traversing drive starts with a new direction of rotation.
Tip!
When the basic configuration C0005 = 3000 is loaded for this application, the ramp function
generator is default−set to traversing drive deceleration and acceleration with constant path
(C0104 = 2) and independently of the winding speed.
Determining the distance traversed during deceleration and acceleration
The distance traversed during deceleration and acceleration corresponds to a certain number of
motor revolutions (N). The number N is determined by setting the Ti−times (C0012, C0013).
l The number of motor revolutions during deceleration or acceleration are calculated according
to the following formula:
N
+
n
max
60
@
T
i
2
N Number of motor revolutions
n
max
Maximum speed (value in C0011)
T
i
Acceleration time T
ir
(value in C0012) or deceleration time T
if
(value in
C0013)