22
Parameter functions and setting procedure
PRoG
Ramp soak control (004)
[Description] –––––––––––––––––––––––––––––––––––––––––––––––––––––––
Allows you to switch between Ramp soak states.
Setpoint
Description
oFF
Ramp soak is stopped.
RUN
Ramp soak starts.
HLd
Ramp soak hold. To release the hold, select “ RUN ” again.
This function automatically changes the SV (Set value) according to the program pattern set in advance as shown
in the following line graph. Up to eight pairs of rampsoak operation can be programmed.
Up to SV-8
SV-3
SV-2
SV-1
SV-4
PV
tM1R tM2R tM3R tM4R
tM1S tM2S tM3S tM4S Up to tM8S
Up to tM8R
First ramp Fourth soak
Ramp : the section in which the SV changes toward the target value.
Soak : the section in which the SV is the target value, and remains unchanged.
First soak
Second ramp
Second soak
Third ramp
Third soak
Fourth ramp
The rst ramp starts at the PV that is the one just before running the program.
By setting the Ramp soak mode parameter [Mod] to “power-on start,” you can make the controller start with the
ramp soak program (Power-on starting function).
The parameter information changes automatically depending on the ramp soak state.
• “ ENd ” (end): Ramp soak has nished.
During ramp soak operation, one of RUN, HOLD, or END indicators light according to the state of ramp soak.
(see page 11)
During ramp soak operation, on-going step No. and “ r ” (ramp) or “ - ” (soak) are displayed on the screen No.
area of operation screen (PV/SV screen).
For example, “ 2r ” appears during step 2 ramp, and “ 2- ” during step 2 soak.
Related parameters:
• Status display of ramp soak [StAt] (see page 51)
• Ramp soak execution pattern [PtN] (see page 52)
• 1st target SV to 8th target SV [SV-1] to [SV-8] (see page 53)
• 1st ramp time to 8th ramp time [tM1R] to [tM8R] (see page 53)
• 1st soak time to 8th soak time [tM1S] to [tM8S] (see page 53)
• Ramp soak mode [Mod] (see page 55)
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