Function library
7-264
L
EDSVS9332P-D21 EN 3.0
7.5.76.3 Dead time
This function is available only for the FB SP2.
Purpose
Delayed triggering of subsequent machine parts (e.g. spray jets).
Function
•
The dead time is entered via C1657.
– The setting is possible for SP2-STAT1 ... SP2-STAT4 only.
Assignment of the code to the outputs:
Code Subcode Output FB SP2
C1657
1 SP2-STAT1
2 SP2-STAT2
3 SP2-STAT3
4 SP2-STAT4
•
The dead time acts on switching points and hysteresis.
Positive dead time
I N x - 1 I N x - 2
S P 2 - L - I N
P 2 - S T A T x
H I G H
L O W
T
d e a d
T
d e a d
T r a v e l d i r e c t i o n
I N x - 1 I N x - 2
S P 2 - L - I N
P 2 - S T A T x
H I G H
L O W
T
T o t
T
T o t
T r a v e l d i r e c t i o n
( p o s i t i v e d e a d t i m e )
( p o s i t i v e d e a d t i m e )
Fig. 7-217 Function of the positive dead time with different travel directions
•
With a positive dead time, the drive reacts earlier by the time period set.
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