5-12
Chapter 5. FUNCTIONS
■
G.Soak (guarantee soak)
G.Soak ON/OFF and G.Soak width can be set
for each segment. The G.Soak time can also be
set by the variable parameter
G
S
.
t
item.
The G.Soak function ensures a segment execu-
tion time with PV close to SP. G.Soak functions
not only in soak segments but also in ramp
segments.
At the segment start point, PV and SP are
compared, and the absolute value of the result-
ing deviation continues for the G.Soak time or
longer. When the absolute value is smaller than
the G.Soak width, operation of that segment is
started.
The controller is in the G.Soak standby state
until this condition is satisfied, and the linear
lamp on the left of the profile display blinks.
The operation state is the same as hold at the
segment start point (time is set to 0). However,
note that in the FAST mode, the controller
does not enter the G.Soak standby state even if
G.Soak is set to ON. The G.Soak standby state
can also be canceled by external switch output.
The following cancel conditions can be selected
by the setup date
C
5
2
to
C
5
4
settings:
(1) G.Soak cancel when external switch input
contact is ON or PV satisfies the G.Soak
cancel conditions
(2) G.Soak cancel when external switch input
contact is ON and PV satisfies the G.Soak
cancel conditions
G.Soak time-out time can be set for each seg-
ment.
If the G.Soak width and G.Soak time-out time
are both set, the G.Soak standby state is force-
fully cancelled after the passage of G.Soak
standby time for the set time, and then the seg-
ment time count starts.
If the G.Soak width is not set, the G.Soak func-
tion does not function. As a result, this time-out
function also does not function.
SP
SP
PV
G.Soak width
G.Soak width
Segment execution time
G.Soak standby time
Time count start
Segment set time
Time
G.Soak at segment start point
Time
SP
G.Soak width
SP
PV
Segment execu-
tion time
G.Soak time-out time
Time count start
G.Soak width
