74
Setting Control Specifications
Section 5-3
Restrictions during
SP Ramp Operation
• Autotuning is started after the SP ramp operation has been completed.
• The SP ramp operation will continue even if operation is switched to man-
ual mode.
• When control is stopped or an error occurs, the SP ramp function will be
disabled.
5-3-5
Setting the Manipulated Variable (MV)
■
Manual MV
If control is set to manual mode, the standard control function will stop and the
MV set in the Manual MV parameter can be output.
Use an event input or operation command to switch between auto mode
(standard control) and manual mode. When using an event input to switch
modes, set the Event Input Assignment parameter to Auto (0)/Manual (1).
After the event input is set, it will operate as follows:
Note
Refer to 6-4-11 Operation Commands for details on using an operation com-
mand to switch the mode.
Check the Channel Status parameter (variable type C4/84) to confirm whether
the Controller is in auto mode or manual mode.
Operation When
Switching between Auto
and Manual Modes
The following diagram shows the operation when the mode is switched
between auto mode and manual mode.
SP
PV2
Start of operation
SP ramp
PV3
PV1
Variable type
Parameter name
Setting range
Default
D5/95
Manual MV (Channel)
−
5.0 to 105.0%
0
Conditions for use
The control method must be set to 2-PID control in manual
mode.
Event input
Operation
OFF
Auto Mode
ON
Manual Mode
Manual MV
Actual MV
−
5.0%
105.0%
100.0%
0.0%
100.0%
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Страница 53: ...32 Unit Configuration Examples Section 2 4 ...
Страница 69: ...48 Changing SPs During Operation Section 3 3 ...
Страница 81: ...60 Other Functions Section 4 5 ...
Страница 145: ...124 Other HFU Functions Section 5 7 ...
Страница 167: ...146 Detailed Description of Services Section 6 4 ...
Страница 189: ...168 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 7 8 ...
Страница 229: ...208 Parameters That Can Be Allocated for Programless Communications Appendix ...
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