29
PU-2A USERS
MANUAL EM-9255-C Rev.14
■
DEAD TIME COMPUTING model JFTS2 (Group 01)
ITEM
MDFY.
DATA INPUT
DISPLAY
CONTENTS
23
P
FUNCTION TYPE
0
0: NO FILTER
Without the function
2
2:
DEAD TIME
With the dead time computing
24
25
26
P
P
P
0.1 – 100.0
1 – 100
0.1 – 100.0
H
N
T
XXX.X
X
XXX.X
Sampling cycle “H” (seconds)
“N” number of samples to be calculated
Time constant “T” (seconds)
[FUNCTION]
The JFTS2 does not respond to an input signal for a preset dead-time duration. In addition, when a time constant T
value is set, it generates a first order lag output after the dead-time.
Xo (s) =
e
–Ls
Xi (s)
1 + Ts
Xi : Input
Xo :
Output
Ls :
Dead-time (H × N) s
H
Sampling cycle (0.1 to 100.0 sec. adj.)
N
Number of samples to be calculated
(1 to 100 adjustable)
T
Time constant (0.1 to 100.0 sec. adj.)
H ≤ T, T = 0 with no first-order lag
INPUT
• Step Input with Dead-Time
t
OUTPUT
t
0
0
H x N
INPUT
• Step Input with Dead-Time Plus Time Constant
t
OUTPUT
t
0
0
T
H x N
