Nor-Cal SDC15 Controller - Manual (Page 60)

5-10
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
MV1 = MV
Fixed PID
Control method: Fixed PID
(Setting: Parameter CtrL
must be set at "1".)
ST
Control method: ST (Self-tuning)
(Setting: Parameter CtrL
must be set at "2".)
Adjustment according to
step response/hunching
(Setting: Extended tuning
St.SA, St.Sb, St.Hb, St.Ud)
ST is not run in the following cases:
• Heat/Cool control is used.
• Just-FiTTER is used.
READY mode
AUTO mode
MANUAL mode
RUN mode
SP lag overshoot suppression
(Setting: Extended tuning SP.Lg)
RationaLOOP high precision
control logic
(Setting: Extended tuning Ctr.A)
Just-FiTTER overshoot suppression
(Setting: Extended tuning
JF.ov, JF.bd)
Bumpless transfer/Preset selection
(Setting: Setup C19, C20)
Branching according to
AUTO/MANUAL mode
Branching according to
RUN/READY mode
MV
MV1 = MV
Branching according to
output operation at PV alarm
(Setting: Setup C15, C16)
PID control
(Setting: PID P-1, I-1, d-1, rE-1,
oL-1, oH-1, P-1.C, I-1.C, d-1.C,
oL-1.C, oH-1.C)
Output at PV alarm
(Setting: Setup C16)
Branching according to
Heat/Cool control
(Setting: Setup C26)
C26 = 0 C26 = 1
Branching according to
Heat/Cool control
(Setting: Setup C26)
MV1 = Heat MV MV2 = Cool MV MV1 = Heat MV MV2 = Cool MV
Output at READY
(Setting: Setup C17, C18)
Heat/Cool control
(Setting: Setup C28, C29)
Output at READY
(Setting: Setup C17)
PV is correct or
C15 = 0:
C26 = 0
C26 = 1
PV is faulty and C15 = 1: