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Manual Mode Section 4-9
4-9 Manual Mode
4-9-1 Auto/Manual
• If the “auto/manual” operation command is used by host communications
to set “01: manual (ch1)” or “11: manual (ch2),” the E5ZN will operate in
manual mode.
• If ON/OFF control is selected, operation cannot be switched to manual
mode. Always switch to PID control before selecting manual mode.
If manual mode has been selected and then operation is switched to ON/
OFF control, the mode will automatically be changed to automatic mode.
• In manual mode, the standard control functions are stopped and the val-
ues set in the manual manipulated variable will be output.
• Make separate settings for ch1 and ch2 for auto/manual switching.
• To switch from manual to automatic mode, use the “auto/manual” opera-
tion command to set “00: auto (ch1)” and “10: auto (ch2).”
• Switching between automatic and manual modes and manual manipu-
lated variable settings cannot be made from the E5ZN-SDL Setting Dis-
play Unit.
• To check whether the E5ZN is in automatic or manual mode, use host
communications to read the “status” parameter.
• Even if the “operation after power turned ON” setting is on “continue”
(continue operation status before power OFF), the manual manipulated
variable before the power was turned OFF will not be saved. It will always
change to 0%.
Output (100%)
100%
20%
The output at switching
will be saved.
RUN (During
control)
To manual
mode,
using auto/
manual
switching
Sets manual
manipulated
variable to
20%.
To automatic
mode, using
auto/manual
switching
Time
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