Autonics TM Series - Page 59

6 Parameter Settings and Functions
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6.3.3.5 Offset correction/Manual reset
When only proportional control (P, PD control) is used, the control subject's thermal capacity and
heater capacity affect the heating and cooling time. This means stable control will still experience
some deviation called offset. Offset can be corrected using manual reset.
Setting group
Preceding
condition
Parameter
Setting
range
Factory
default
Unit
Control Operation PID Manual Reset 0.0 to 100.0 50.0 %
 Manual reset adjustment based on control results
Under stable control conditions, set the offset to 50% if PV and SV are identical, to over
50.0% if PV is lower than SV, and below 50.0% if PV is higher than SV.
 The offset correction feature can only be used when proportional control is in effect. Setting
the integral value to 0 makes the manual reset parameter visible.
 The user cannot configure the manual reset setting during heating and cooling control.
Instead, the setting is automatically set to 0% for both heating and cooling.
 Applicable only when integral time is set to 0 (under P control or PD control only).
 Switching from heating and cooling control to standard control (P, PD control) automatically
configures the reset setting to 50%.