Lenze EVS9332xK - Manual (Page 123)

Function library
Function blocks
3.2.24 Clutch (CLUTCH 3)
3−95
l
EDSVS9332K−EXT EN 4.0
3.2.24.5 Time−controlled engaging
Description
The engaging distance (acceleration distance), the start position and sync position result from the
acceleration time Ti (C1706/3) or the deceleration time Ti (C1706/2) and from the speeds at
CLUTCH3−PHI−SET and CLUTCH3−PHI–ACT.
The acceleration acts in accordance with the time Ti and therefore is independent of the machine
speed.
The engaging distance depends on the machine speed. If the speed is high, the engaging distance
and the duration of the asynchronism is longer than for a lower speed.
Function sequense
S y n c - P o s i t i o n
0 ° / 3 6 0 °
P H I - A C T
P H I - S E T
t i
9 0 °
1 8 0 °
S y n c - P o s i t i o n
0 ° / 3 6 0 °
P H I - A C T
P H I - S E T
t i
4 5 °
1 8 0 °
3 1 5 °
2 7 0 °
t i
t i
fb_clutch3_06
Fig. 3−63 Angle diagrams: Two clutch−engagement processes with different speeds
The two angle diagrams show two clutch−engagement processes at the start of synchronising with
equal acceleration times Ti (C1706/3), but with different machine speeds. From this, different
engaging distances result.
Engaging process for the angle diagram on the right:
l The internal master angle (PHI−ACT) is at 180 ° with a speed of 0 min −1 .
l On the basis of the Ti−time set and the speed of the external master angle (PHI−SET), an
acceleration distance of 135 ° results.
l After the acceleration distance of 135 °, PHI−SET crosses the starting position and the process
of engaging the clutch is automatically initiated if CLUTCH3−CLOSE = HIGH.
l In the sync position, PHI−SET and PHI−ACT are running synchronously with regard to speed
and angle (position).
– From the start position to the sync position, PHI−SET covers twice the distance of PHI−ACT.