Set Point Limiter - Omron E5EK PROGRAMMABLE TYPE User Manual

CHAPTER 4 APPLIED OPERATION
F Limiter operation
conditions
J Set point limiter
Set point
Scaling (sensor) upper-and lower-limitter values
Parameters
4--8
The limitters are disabled or cannot be set when any of the following
conditions occurs:
• During ON/OFF control
• During AT execution (only by MV change rate limitter)
• During manual operation
• When operation is stopped
• When an error has occurred
• During position-proportional control (manipulated variable limitter
only)
The setting range of the set point is limited by the set point limitter.
The upper- and lower-limit values of this set point limitter are set in
the "set point upper limit" and "set point lower limit" parameters (ex-
pansion mode), respectively. However, note that when the set point li-
mitter is reset, the set point is forcibly changed to the upper- or lower-
limit value of the set point limitter if the set point is out of the limitter
range. Also, when the input type, temperature unit and scaling (sensor)
range are changed, the set point limitter is forcibly reset to the scaling
(sensor) range.
Setting range
Changed to upper
limit value
Input type changed
Upper-and lower-limit values of the limitter
Symbol Parameter Name: Mode
MV upper limit
MV lower limit
MV change rate limit : Level 2
Set point upper limit : Expansion
Set point lower limit : Expansion
Scaling (sensor) range

Set point limiter

Changed to
A
the new up-
○
per limit
value
C
C
: Level 2 For limiting manipulated variable
: Level 2 For limiting manipulated variable
For limiting manipulated variable
For limiting SP setting
For limiting SP setting
Set Point
B
(setting impossible)
×
Set Point
Set Point
B
○ (setting possible)
Description