Nor-Cal SDC15 Controller - Manual (Page 59)

5 - 3 Control
The following shows the functional block diagram of the control (ON/OFF control, PID control, RationaLOOP
control, and Heat/Cool control, etc.):
5-9
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
MV1 output ON MV1 output OFF
MV1 output ON or output OFF
ON/OFF control
Control method: ON/OFF control
(Setting: Parameter CtrL
must be set at "0".)
ON/OFF control
(Setting: Parameter dIFF, oFFS)
Branching according to
output at READY
(Setting: Setup C17)
Branching according to
output operation at PV alarm
(Setting: Setup C15)
Branching according to
RUN/READY mode selection
READY mode
C17 > 0.0% C17 ≤ 0.0%
MV1 output ON MV1 output OFF
Branching according to
output at PV alarm
(Setting: Setup C16)
C16 > 0.0% C16 ≤ 0.0%
PV is correct or
C15 = 0:
PV is faulty (AL01/02 occurs)
and C15 = 1:
RUN mode