8. PARAMETER DESCRIPTION
IMR02C15-E4
8-27
Derivative time
Factory default setting:
The screen is displayed.
Derivative action is to prevent rippling and make control stable by monitoring
output change. For Heat/Cool PID control, the Derivative time is same on both
heat-side and cool-side.
Data range Factory set value
1 to 3600 seconds
(0: PI action)
60
Derivative time is not displayed when the block selection at F06 [S.F06]
(P. 8-76) is set to “1: No display” in the Engineering mode.
Related parameters
Engineering mode:
• Derivative time (P. 8-74)
• Derivative action (P. 8-128)
Anti-reset windup (ARW)
Factory default setting:
The screen is displayed.
In order to prevent an overshoot caused by the integral effect, sets the value to
restrict the effective range of integral action.
Data range Factory set value
1 to 100 % of Proportional band [heat-side]
(0: Integral action is always OFF)
100
Anti-reset windup (ARW) is not displayed when the block selection at
F06 [S.F06] (P. 8-76) is set to “1: No display” in the Engineering mode.
Related parameters
Parameter setting mode:
• Proportional band [heat-side] (P. 8-26)
Engineering mode:
• Anti-reset windup (P. 8-74)
D
ARW