Nor-Cal SDC15 Controller - Manual (Page 92)

5-42
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
Operation type Set value Direct action Reverse action
of operation
type
Loop diagnosis 2 21
PV to be used
as reference
Main setting
Time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satisfied.
Area satisfying
conditions 1
Sub-setting
(0 or more)
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON
HYS
Main setting
Time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satisfied.
Area satisfying
conditions 1
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON
HYS
Sub-setting
(0 or more)
PV to be used
as reference
The event is turned ON when any change in PV corresponding to increase/decrease in MV
(Manipulated variable) is not observed.
This event is used to detect any fault at the operation end.
● Setting items
• Main setting: MV (Manipulated variable)
• Sub-setting: Change in PV from the point that the MV exceeds the main setting.
• ON delay time: Diagnosis time
● Operation specifications
The event is turned ON when the MV exceeding the main setting is held (conditions 2) and
the PV does not reach the value that the sub-setting is added to (subtracted from) the PV at
the point that the MV exceeds the main setting within the diagnosis time (ON delay time)
(conditions 1).
● CAUTION
When setting the ON delay, it is necessary to put in "High function configuration".
The default setting of the ON delay before shipment is 0.0s.
Heat control Cool control