Omron E5C series, User Manual

Page: 282 / 372

6 Parameters
6 - 66 E5@C Digital Temperature Controllers User’s Manual (H174)
at-g
AT Calculated Gain
Control must be set to 2-PID control.
at-h
AT Hysteresis
lcma
Limit Cycle MV Amplitude
Control must be set to 2-PID control or close
position-proportional control.
• Normally use the default values for these parameters.
• The AT Calculated Gain parameter sets the gain for when PID values are calculated using
AT. When emphasizing response, decrease the set value. When emphasizing stability,
increase the set value.
• The AT Hysteresis parameter sets the hysteresis for limit cycle operation during
autotuning when switching ON and OFF.
• The Limit Cycle MV Amplitude parameter sets the MV amplitude for limit cycle operation
during autotuning.
z
Related Parameters
AT Execute/Cancel (Adjustment Level): Page 6-20
inf
Input Digital Filter
• This parameter sets the time constant for the input digital filter. The following diagram
shows the effect on data after passing through the digital filter:
000
000
000
Function
Setting
Parameter name Setting range Unit Default
AT Calculated Gain 0.1 to 10.0 --- Standard Model: 0.8
Position-proportional Model: 1.0
AT Hysteresis Temperature
input: 0.1 to 999.9
°
C 0.8
°
F 1.4
Analog input:
0.01 to 9.99 %FS 0.20
Limit Cycle MV Amplitude 5.0 to 50.0 % 20.0
See See
Function
A
0.63 A
PV before passing through filter
PV after passing through filter
(Time constant)
Input digital filter
Time
Setting
Setting range Unit Default
0.0 to 999.9 Seconds 0.0