West Control Solutions KS98-1 - Manual (Page 129)

III-6.4 DELA1 ( delay time (No. 53))
If the clock input is not wired, the function calculates y1(t) = x1 (t-n
· ts). ( ts= sampling interval,Delay = delay factor n)
Unless clock input clock is wired, the following is applicable: input variable x1 is output with a delay by n times the amount
of adjusted sampling interval ts ( phase shift by n ts × ). The effective delay time corresponds to integer multiples of the selec-
ted time group (sampling interval ts 100/200/400/800 ms). The delay time range covers n= 0 to 255 (0 255 .....
× ts)
With clock input clock wired, DELA1 acts like a shift register with a length of max. 255=Parameter
delay. This register can be switched on by one step by an external event preset .
Switching on is only with a positive flank ( transition from 0 r 1) at the clock input plus the adjusted delay factor (pa-
rameter
delay).
Example:
With
delay = 4 change-over at output y is only after 4 flank changes from 0 r 1 at input clock
Preset: The output provides the value applied to Preset. After (n+1) positive flanks at clock
or (n+1) sampling cycles t
S
(if clock isn't wired), the first input value x1 appears at y1.
reset: The output provides value 0. After a positive flank at clock, value zero still is provided
for the sampling interval ts.
The function has a ‘memory’. This means: after power-on, it continues operating with values y1, z1 and z2, which exis -
ted at power-on, provided that the RAM data are still unchanged.
Inputs/outputs
Digital inputs
clock
= 0->1 clock for delaying
preset = 1 The preset value is taken to the output
reset = 1 Output y1 is set to zero
Analog inputs
x1
Input variable to be delayed
Preset Value output without delay by preset = 1
With several simultaneous control commands:
reset
= 1 has priority over preset and stop
preset = 1 has priority over stop
Analog output
y1
Delayed output variable
Parameter:
Parameter Description Range Default
Delay Delay factor n 0/1/.....255 0
Time functions 9499-040-82711
III-129 DELA1 ( delay time (No. 53))
0
n
t
reset
preset
clock
X1
Preset
Y1