User Manual

174
Advanced Function Setting Level Section 5-7
This parameter executes robust tuning (RT).
• When AT or ST is executed with RT selected, PID constants are automat-
ically set which make it hard for control performance to degenerate even
when control object characteristics are changed.
• Even when hunting occurs for PID constants when AT or ST is executed
in normal mode, it is less likely to occur when AT or ST is executed in RT
mode.
■ Related Parameters
AT execute/cancel: Page 131, Proportional band, Integral time, Derivative
time: Page 138 (adjustment level)
PID ON/OFF: Page 149, ST: Page 150 (initial setting level)
• Set this parameter to use HS alarms.
rt RT
The control must be set to 2-PID
control.
The input type must be set to tem-
perature input.
Setting range Default
on: RT function OFF, off: RT function ON off
Function
Setting
See
See
hsu HS Alarm Use
Heater burnout and HS alarms must
be supported.
Alarm 1 must be assigned.
Setting range Default
on: Enabled, off: Disabled on
Function
Setting