6. PARAMETER SETTING MODE
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IMR01N12-E7
Area soak time (AST)
Area soak time is used for Ramp/Soak control function in conjunction with Link area number and Setting change
rate limiter (up/down).
Data range:
0 hour 00.00 second to 9 minutes 59.99 seconds or
0 hour 00 minute 00 second to 9 hours 59 minutes 59 seconds
Factory set value:
0.00.00 (0 minute 00.00 second)
Related parameters:
Setting change rate limiter (up) (P. 38), Setting change rate limiter (down) (P. 39),
Link area number (P. 41), Memory area soak time monitor (P. 107)
The unit time can be changed by the Soak time unit selection in the Engineering mode. (P. 97).
(Factory set value: 0 minute 00.00 second to 9 minutes 59.99 seconds)
The Area soak time can be changed during normal operation with Ramp/Soak control function, but
Read the following example carefully how the time change affects Ramp/Soak control time. For
example, the memory area which has 5-minute soak time is executed. When 3 minutes passed, the
Area soak time is changed from 5 minutes to 10 minutes. The remaining time of the currently
executed Memory area is calculated as follows.
(The new soak time 10 minutes) – (lapsed time 3 minutes) = (remaining time 7 minutes)
The old soak time does not have any effect on remaining time.
For the instrument with the 2-input specification, its area soaking starts based on the arrival at the
memory area set value of Input 1 or that of Input 2, whichever later.
Area soak time
Measured value (PV)
Set value (SV) of
memory area 1
Present set value (SV)
Time
Input 1
Input 2
Area soak time start-up
Area soak time:
5 minutes
Area soak time is changed 10 minutes.
Measured value (PV)
Set value (SV) of
memory area 1
Present set value (SV)
Time
Time of remaining
operating hour:
7 minutes
Changing
Operation start:
3 minutes
