Omron E5CS-U, User Manual

Page: 59 / 110

Section 4 Operations for Applications
4-6
Oper
ations f
o
r
Applications
4.4 Setting the SP Upper and Lower Limit Values
•
■
Set Point
Limiter
The setting range of the set point is limited by the set point limiter.
The set point limiter is used to prevent the control target from
reaching abnormal temperatures.
The upper- and lower-limit values of the set point limiter are set using
the “set point upper limit”
and “set point lower limit” parameters in
the initial setting level (3). When the set point limiter is reset,
however, the set point is forcibly changed to the upper- or lower-limit
value of the set point limiter if the set point is out of the limiter range
as a result of resetting.
Also, when the input type and temperature unit are changed, the set
point limiter is forcibly reset to the sensor setting range.
▼ ▽ ▼
▽
▽ ▽
▽
▼
▼
▼
▽
▼
Set point limiter
Sensor range
Set point
Set value
Set value
▼
▼
▼
Setting range
Limiter upper-
limit changed
▲
Limiter
▼
upper-/lower-limit
▽
Sensor upper-/lower-limit values
C
B
○
(Can be set.)
B
×
(Cannot be set.)
Upper-limit
value changed
A
○
▼
Input type changed
■
Setting
Set the set point upper and lower limits in the “set point upper limit”
and “set point lower limit” parameters in the initial setting level (3). In
this example, it is assumed that the input type is set to a K
thermocouple with a temperature range of
−
99 to 1300
°
C.
Sensor range
1300
Set point limiter
-99
0 1000