Azbil SDC15 User Manual

5-17
Chapter 5. SETTINGS BEFORE STARTING OPERATION
Operation type Set value Direct action Reverse action
of operation
type
Loop diagnosis 3 22
High limit
Low limit
Time
Conditions 3
ON delay
set time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satisfied.
Area satisfying
conditions 2
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON ON
HYS
HYS
PV to be used
as reference
PV to be used as reference
(0 or more)
Main setting
Main setting (0 or more)
Area satisfying
conditions 1
Area satisfying
conditions 1
High limit
Low limit
Time
Conditions 3
ON delay
set time
Conditions 3
ON delay
set time
ON delay is started when conditions 1 and 2 are satisfied.
Area satisfying
conditions 2
Area satisfying
conditions 2
Time
Time
PV
MV
EV
ON ON
HYS
HYS
(0 or more)
Main setting
Main setting (0 or more)
Area satisfying
conditions 1
Area satisfying
conditions 1
PV to be used
as reference
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: Change in PV from the point that the MV reaches the high limit (100%) or low
limit (0%).
• Sub-setting: Range of absolute value of deviation (PV-SP) allowing the event to turn OFF.
• ON delay time: Diagnosis time
• OFF delay time: A period of time from power ON allowing the event to turn OFF.
● Operation specifications
• The direct action is used for the heat control. The event is turned ON when the increase in
PV becomes smaller than the main setting after the diagnosis time (ON delay time) has
elapsed after the MV had reached the high limit or when the decrease in PV becomes
smaller than the main setting after the diagnosis time (ON delay time) has elapsed after the
MV had reached the low limit.
• The reverse action is used for the cool control. The event is turned ON when the decrease
in PV becomes smaller than the main setting after the diagnosis time (ON delay time) has
elapsed after the MV had reached the high limit or when the increase in PV becomes
smaller than the main setting after the diagnosis time (ON delay time) has elapsed after the
MV had reached the low limit.
• The event is turned OFF regardless of other conditions when the absolute value of the
deviation (PV-SP) becomes less than the sub-setting.
• The event is turned OFF regardless of other conditions when a period of time after starting
of operation after the power has been turned ON becomes less than the OFF delay time.
However, the event is turned OFF when the absolute value of the deviation is the (sub-
setting - hysteresis) value or less after the absolute value of the deviation has become the
sub-setting or more.
● CAUTION
When setting the ON delay and OFF delay, it is necessary to put in " High function
configuration".
The default settings of the ON delay and OFF delay before shipment are 0.0s.
Heat control Cool control

Azbil SDC15 Specifications

General

Brand	Azbil
Model	SDC15
Category	Controller
Language	English