Lenze EVS9332xK - Manual (Page 128)

Function library
Function blocks
3.2.24 Clutch (CLUTCH 3)
3−100
l
EDSVS9332K−EXT EN 4.0
3.2.24.10 Engaging the clutch at to different positions of the external master angle
Description
Engaging the clutch is effected by an advancing internal master angle (PHOUT). The required
acceleration distance of the internal master angle (PHOUT) is automatically calculated from the
machine speed and the acceleration time Ti. Thus the next possible start position is determined.
Simultaneously the sync position results from this, from which the internal master angle (PHOUT)
runs synchronously to the external master angle (PHI−SET). With CLUTCH3−CLOSE = HIGH, the
engaging prcess is started. If the external master angle at CLUTCH3−PHI−SET crosses the start
position, synchronising is started.
Engaging the clutch if the external master angle PHI−SET is before the start position
C L O S E
N S E T
t
t
P H O U T
t
L E N
S y n c - P o s i t i o n
O P E N
t
A C C / D E C
t
A c c e l e r a t i o n d i s t a n c e
A c c e l e r a t i o n d i s t a n c e
S t a r t - P o s i t i o n
S y n c - P o s i t i o n
0 ° / 3 6 0 °
P H I - A C T = P H O U T
P H I - S E T
A c c e l e r a t i o n d i s t a n c e
1 8 0 °
2 7 0 °
A c c e l e r a t i o n d i s t a n c e
S t a r t - P o s i t i o n
v e l o c i t y
fb_clutch3_04
Fig. 3−69 Angle diagram and path−time diagram: Engaging the clutch if the external master angle is before the start position
0
External master angle at CLUTCH3−PHI−SET
1 Internal master angle at CLUTCH3−PHI−ACT
PHI−SET Position of the external master angle at CLUTCH3−PHI−SET at the start of the engaging process
(CLUTCH3−CLOSE = HIGH)
PHI−ACT Position of the internal master angle at CLUTCH3−PHI−ACT at the start of the engaging process
(CLUTCH3−CLOSE = HIGH)
Start position Position of the external master angle at which synchronising is initiated
Sync position Position from which the external and internal master angles run synchronously
OPEN If CLUTCH3−OPEN switches to HIGH, the clutch is engaged
ACC/DEC During the process of engaging the clutch, CLUTCH3−ACC/DEC = HIGH
If CLUTCH3−CLOSE = HIGH, the external master angle is befor the start position calculated. The
process of engaging the clutch is initiated during this clock pulse.
The internal master angle has to be synchronised to the external master angle with regard to position
and angle. The external master angle runs at a constant speed. During the process of engaging the
clutch, the internal master angle covers the "Acceleration distance" to the sync position. The external
master angle covers the "Acceleration distance" twice.