Omron e5ck User Manual page 65

JProgram example
F Program
structure
F How the program
works
Parameters
Operation
at Input Error
Let's describe a typical example of a ramp rise rate setup program. In an
actual program, set the parameters to match the application.
100
10
Step 0
30
Target SP 0 : 100
Rate of rise 0 : 3
Soak time 0 : 0.30
"Number of steps" = 4, "Time unit of ramp rate" = minutes, "PV start" = 10
In a program comprising four steps, steps 0 and 1 follow the settings of the
target SP 0", rate of rise 0" and soak time 0" parameters. Steps 2 and
3 follow the settings of the target SP 1", rate of rise 1" and soak time
1" parameters.
(1) As the program starts at PV (PV start), the program starts operation
from 10" in this example.
(2) As the rate of rise is set to 3", the Present SP takes 30 minutes
(100 10/3=30) to reach the target SP value 100" in step 0. If the PV
is 40" when the program is started, this time then becomes 20 min
utes using the same formula.
(3) In step 1, the Present SP does not change, and the step time is the val
ue set to the soak time 0" parameter (in this example, 30 minutes").
(4) In step2, the Present SP changes according to the value of rate of rise
1" parameter from that of target SP 0" parameter to that of target
SP 1" parameter It takes 30 minutes in this example.
(5) In step 3, the Present SP does not change, and the step time is the val
ue set to the soak time 1" parameter (in this example, 30 minutes").
Symbol Parameter Name: Mode
Step time/Rate of rise programming
:
Target SP 0 to 7
:
Rate of rise 0 to 7
:
Soak time 0 to 7
: :
to
By ramp rise rate setup method, starting at input error, the program start step is the
step 1".
4.3 Ramp Rise Rate Setup Program
Step 1 Step 2
60
Target SP 1
Rate of rise 1 : 3
Soak time 1 : 0.30
: Expansion
: Program
: Program
: Program
Step 3
90 120
: 10
Description
Ramp rise rate
Ramp rise rate
Ramp rise rate
Ramp rise rate
4–9