Omron E5AR-T User Manual page 123

Section 5 Functions and Operations
● Conditions for Activating Disturbance Overshoot Adjustment
Disturbance Rectification Band
1 do-b
0.000
l.adj
Disturbance Judgement Width
1 dojw
0.00
l.adj
5-14
• If the deviation is greater than the value set for the Disturbance
Judgement Width parameter after the PV is rectified to the value set
for the Disturbance Rectification Band parameter, the disturbance
overshoot adjustment function is activated.
• When the disturbance judgement width is a positive value, distur-
bance overshoot adjustment will activate when a disturbance occurs
that makes the PV fall. When the disturbance judgement width is a
negative value, disturbance overshoot adjustment will activate when
a disturbance occurs that makes the PV rise.
• Disturbance overshoot adjustment is not activated in the following
situations:
• When the Disturbance Rectification Band or Disturbance
Judgement Width parameter is set to 0.
• When the SP is changed (when the SP change width exceeds
the disturbance rectification band)
• During AT
• During ON/OFF control (P = 0.00)
• During PD control (I = 0.00)
• The Disturbance Rectification Band and Disturbance Judgement
Width parameters are set as percentages of FS. As such, if the input
type is K (1) (-200.0 to 1300.0°C) and you wish to set the distur-
bance judgement width to 15.0°C,
15.0°C/1500.0°C 100 = 1.00% FS
The Disturbance Judgement Width parameter is thus set to 1.00.
Temper- No disturbance overshoot adjustment
ature
SP
Parameter
Disturbance Overshoot
Adjustment Function
Disturbance Gain
Disturbance Time Constant
Disturbance Rectification
Band
Disturbance Judgement
Width
Disturbance overshoot adjustment
Setting range
OFF: Disabled,
ON: Enabled
1.00 to 1.00
0.01 to 99.99
0.000 to 9.999 %FS
99.99 to 99.99 %FS
Disturbance
rectification
band
Disturbance
judgement
width
Time
Default
Unit
value
OFF
0.65
1.00
0.000
0.00