RKC INSTRUMENT RB Series User Manual

8. PARAMETER DESCRIPTION
IMR02C15-E4
8-25
Startup tuning (ST)
Factory default setting:
The screen is displayed.
Use to set the number of execution times of Startup tuning (ST).
Data range Factory set value
0: ST unused
1: Execute once
2: Execute always
0
Startup tuning (ST) is not displayed when the block selection at F05
[S.F05] (P. 8-72) is set to “1: No display” in the Engineering mode.
When in Heat/Cool PID control, it is possible to execute the Startup
tuning (ST) function only in the temperature rise direction. The PID
values on the heat side are automatically calculated.
If the optimum PID constants cannot be obtained by the Startup tuning
(ST), please execute the Autotuning (AT).
For details of the Startup tuning (ST), refer to 6.3 Startup Tuning (ST)
(P. 6-11).
Related parameters
Engineering mode:
• Startup tuning (ST) (P. 8-71)
• ST start condition (P. 8-132)
 Description of function
The Startup tuning (ST) function is used to automatically calculate PID constants from the temperature
rise characteristic (gradient: arrival time to SV) when power is turned on or the Set value (SV) is
changed. Startup tuning (ST) eliminates the lag time in applications when conventional autotuning
requires a long time.
Timing of activating the Startup tuning (ST) can be selected from among the following three types.
- Activate the Startup tuning (ST) function when the power is turned on; when transferred from STOP to RUN; or
when the Set value (SV) is changed.
- Activate the Startup tuning (ST) function when the power is turned on; or when transferred from STOP to RUN.
- Activate the Startup tuning (ST) function when the Set value (SV) is changed.
Power is turned on or control is changed
to RUN from STOP.
Set value (SV)
Startup tuning (ST)
is turned on.
A
ctivate the Startup tuning (ST) function when
the power is turned on;
or when transferred from STOP to RUN.
Set value (SV) is changed.
Set value (SV)
Startup tuning (ST)
is turned on.
A
ctivate the Startup tuning (ST) function when
the Set value (SV) is changed.
Set value (SV)
is changed.
Set value (SV)
Startup tuning (ST)
is turned on.
A
ctivate the Startup tuning (ST) function when the
power is turned on; when transferred from STOP
to RUN; or when the Set value (SV) is changed.
Set value (SV)
after being
changed
Power is turned on or
control is changed to
RUN from STOP.
Set value (SV)
after being
changed
STU

RKC INSTRUMENT RB Series Specifications

General

Brand	RKC INSTRUMENT
Model	RB Series
Category	Temperature Controller
Language	English