IDEC MicroSmart Pentra - Manual (Page 107)

C ONFIGURING PID M ODULE USING W IND LDR
6-42 FC5A MicroSmart PID Module User’s Manual FC9Y-B1283
PV Start Action [Process variable (PV) is 170°C]
*1: In the above program pattern, if the set point (SP) of step 4 is 0°C and the step time of step 4 is 0 minutes (falling
gradient step does not exist), the time will be advanced to the end of Step 3, and the program control will be terminated.
PVR Start Action [Process variable (PV) is 25°C]
SP Start Action [Set point (SP) when Program Control Starts is 0°C]
When the program control is started, the time will be advanced
(shown in dotted line) to the start of step 4 (falling gradient step),
and then the program control starts from this point. *1
Program Control Run
60 min
150°C
170°C
Set Point (SP)
Step Number 0 3 4
100°C
50°C
Time
180
min
30
min
30
min
When the program control is started, the time will be
advanced (shown in dotted line) until the set point (SP)
becomes equal to 25°C of the process variable, and
then the program control starts from this point. When the program control is repeated,
the time will be advanced until the set
point (SP) becomes equal to 60°C of the
process variable (PV), and then the
program control starts from this point.
Time
Set Point (SP)
100°C
25°C
150°C
50°C
Step Number 0 1 2 3 4 0 1
60°C
60 min 60 min 45 min 48 min 15 min
Program Control Run Program control is repeated.
The process variable is 60°C.
Time
100°C
150°C
50°C
When the program control is started, the program control will start from
0°C of the set point (SP) configured with “Set Point (SP) when Program
Control Starts” regardless of the current process variable (PV).
0 1 2 3 4
Set Point (SP)
Step Number
30
min
60 min 60 min 60 min 30
min
0°C