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5-4. Auto return function
If no key operation is conducted for 3 minutes on the various screens (with the exception of the “0-2 output 1 monitoring screen”,
“0-3 output 2 monitoring screen”, “0-4 step No. monitoring screen”, “0-5 remaining time of step monitoring screen”, “0-6 number
of pattern execution monitoring screen”, “0-7 Execution PID No. monitoring screen”, “0-10 heater current 1 monitoring screen” or
“0-11 heater current 2 monitoring screen”), the mode automatically returns to the “0-0 basic screen” of screen group 0 (auto return).
5-5. Screen group 0 setting
The flow is given in “6. Screen description and setting items.” This section however primarily contains a description of how to
make settings.
As for the key operation method, the key switches to the next screen. The settings are selected with the key or key on
the various setting screens and entered with the key.
Pressing the key is however not required for modifying output values on the output monitoring screen for manual adjustment.
(1) Setting target set values (SV)
1. To set target set values (SV), press the key or key on the “0-0 basic screen.” Pressing and holding the key causes the
decimal point of the lowest digit to flash, and the value is incremented or decremented. When the desired target set value is
reached, enter by pressing the key.
2. When the setting is entered, the decimal point of the lowest digit of the target set value stops flashing.
Target values cannot be set while auto tuning (AT) is being executed. To set target values, you must first cancel auto tuning.
Example: Set target set value to 500.0°C.
0-0 Basic screen
key key key
Then press and
Decimal point flashes Decimal point flashes Decimal point stops flashing Enter
(2) Manual setting of control output
1) Output monitoring screen (OUT1/OUT2) and switching and setting automatic/manual output
To toggle between automatic and manual, press and hold the key on the “0-2 output 1 monitoring screen” or “0-3 output 2
monitoring screen” or press the key and keys simultaneously.
During manual output, the MAN lamp flashes and it goes off during the automatic output operation.
Pressing the key or key on the output monitoring screen during manual output enables you to set the manual output values.
To return to automatic output, press and hold the key for 3 seconds or press the and keys simultaneously.
c
Changing output action of either output 1 or output 2 to manual automatically changes the other to manual.
Similarly, changing one to auto also automatically changes the other to automatic as well.
d
If output of output 1 is 100.0%, is displayed on the output 1 monitoring screen and the decimal point of flashes.
e If output of output 2 is 100.0%, is displayed on the output 2 monitoring screen and the decimal point of flashes.
f If output is contact or SSR drive voltage and the proportional band (P) setting is OFF, the output value is 0.0% or 100.0%.
g If output is voltage or current and the proportional band (P) setting is OFF, the output value is the lower limit value or higher
limit value of the output limiter set.
NOTE1: Manual output cannot be changed while automatic tuning (AT) is being executed. To change, you must first cancel AT.
NOTE2: If MAN is selected in “4-28 – 4-31 DI mode setting screen”, external control input has a priority and manual output change
cannot be conducted in 0-1 screen.
Automatic output Manual output Manual output Automatic output
0-1 Output monitoring screen
key 3 seconds key key 3 seconds
＋ keys and key ＋ keys
MAN lamp off MAN lamp flashing MAN lamp flashing MAN lamp off
2) Supplementary explanation for use of manual control output
The correlation of the “0-2 output 1 monitoring screen” and “0-3 output 2 monitoring screen” and automatic/manual output is as follows:
c
Output when automatic output is changed to manual is balanceless bumpless action, and the output value prior to change value is
displayed.
When manual is changed to automatic, it becomes bumpless action except if measured value (PV) is outside the proportional band.
d
If power supply is cut off and turned back on, control output action continues in automatic or manual mode, whichever was set
when the power was shut off.
Note: You can switch to another screen in the manual mode as well, but you should note that control output is also manual mode.
When the MAN monitor LED is flashing, the controller is in manual mode.
e
Manual output (MAN) is canceled in the following cases:
When range, input unit, input scaling higher limit or input scaling lower limit is modified.
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