26
Direct/Reverse control action selection
• Selects either Direct (Cooling) or Reverse (Heating)
Reverse
(Heating) action
control action.
• Selecting item
Reverse (Heating):
Direct (Cooling):
AT bias setting
20
• Sets the bias value for performing PID auto-tuning.
• Not available for DC input
Available for PID action
• Setting range: 0 to 50
(0 to 100 )
With a decimal point
，
0.0 to 50.0
(0.0 to 100.0 )
Setting item not used
When Serial communication (option) is applied, this item appears.
However, do not set this item.
SV2 indication selection
Indication
• Selects whether SV2 is indicated or not.
• Selecting item
(Indication)
(No indication)
Output status selection when input abnormal
Output OFF
• Selects the output status of OUT1 and OUT2 (option) when DC input is
overscale or underscale. See “Input abnormality indication” on pages 40, 41.
• Available only for DC current output with DC input
•
: OFF(4mA) or OUT1(OUT2) low limit
: Outputs a value between OFF(4mA) and ON(20mA) or between
OUT1(OUT2) low limit value and OUT1(OUT2) high limit value,
depending on a deviation.
OUT/OFF key function selection
• Selects the OUT/OFF key function.
OUT/OFF
function
• Selecting item
(OUT/OFF function),
(Auto/Manual control function)
ARW function
ARW (Anti-reset windup) prevents overshoot caused by the integral action. The smaller
the ARW value, the less the overshoot caused by the integral action in the transition
status, however it takes time until stabilization.
Sensor correction function
This corrects the input value from the sensor. When a sensor cannot be set at a
location where control is desired, the sensor measuring temperature may deviate from
the temperature in the controlled location. When controlling with plural controllers,
the accuracy of sensors affects the control.
Therefore, sometimes the measured temperatures (input value) do not concur. In such a
case, the control can be set at the desired temperature by adjusting the input value of
sensors.
SV1/SV2 external selection
SV1 or SV2 can be selected by the external operation.
• Between terminals 14 and 17 open: SV1 can be selected.
• Between terminals 14 and 17 closed: SV2 can be selected.
• Set value memory number cannot be changed during setting mode or PID auto-tuning.
