6 Parameter Settings and Functions
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6.2.5 Auto/Manual control
Auto control: This mode implements control over MV, which is calculated under PID control
and based on SV as the target.
Manual control: This mode implements control with user-defined MV.
Setting group Parameter Setting range
Unit
Monitoring Auto-Manual Control AUTO, MANUAL AUTO -
Can be used by setting digital input terminal (DI1, DI2) to STOP function.
Auto/manual control switching is not allowed in ON/OFF control mode.
When the unit is powered on following a power interruption or shutdown, auto or manual
control will be maintained.
When in operation, AT (Auto-tuning) can be switched to manual control.
When in Stop mode, manual control can be activated.
If SBA (Sensor Break Alarm) occurs during standard control, the sensor error MV is applied.
In this state, switching to manual mode is possible and manual control MV settings can also
be modified.
When the control unit is in operation, it is possible to switch to manual or auto control mode.
Priority: Manual control > Stop > Open (sensor break)
6.2.6 Manual control baseline MV
When switching from auto to manual control you can set the initial MV.
AUTO-MV: When switching modes use auto control MV as the initial manual control.
PRESET-MV: Apply preset MV as the initial MV.
Setting group
Parameter
Unit
Control Setting PID Initial Manual MV
AUTO-MV:
PRESET-MV:
AUTO-MV: -
Reverting to power, the control starts with the MV of the power off.