E5jJ
E5jJ
Startup Conditions of HT
HT will be ON when there is hunting with four or more maximum
temperature values (extreme values) while SRT is not being
executed.
Extreme value 2 Extreme value 4
Extreme
value 1
Extreme
value 3
Temperature
Time
SP
Note: In specific applications where temperature varies periodi-
cally
due to disturbance, internal parameters need to be ad
-
justed.
For details, refer to
E5
j
J Operation Manual
.
Auto-tuning
Starting Auto-tuning
Auto-tuning can be started by using the following procedure. Use
this
procedure when appropriate results are not achieved via fuzzy
self-tuning.
1. Turn ON pin 3 of the function selector switch to select the
2-PID
control mode (refer to
page
8
).
2. Press
the Level Key and the Display Key simultaneously
for
1 s
or longer to start auto-tuning.
Conditions that Prevent Auto-tuning
You will not be able to start auto-tuning when any of the following
conditions exist.
• When the control mode is set for ON/OFF control or 2-PID
control
with fuzzy self-tuning.
•
When an engineering level parameter is displayed.
•
When the key protection switch is set to SP
or ALL.
•
When the remote/local setting is set to remote.
•
When the RUN/STOP setting is set to ST
OP.
• When
a sensor error
, memory error
, or A/D converter error has
occurred.
Force-ending Auto-tuning
Auto-tuning
will be forced to end for any of the following conditions.
• When
the T
emperature Controller is turned of
f.
•
When the RUN/ST
OP setting is changed to ST
OP.
• When a sensor error occurs.
• When the Level Key and the Display Key are pressed
simultaneously
for 1 s or longer
.
Changing Parameters during Auto-tuning
• Parameters cannot be changed during auto-tuning, but the
remote/local
setting can be changed.
• The SP also cannot be changed via the event input during
auto-tuning,
but the event input status can be changed and
the
SP
will be changed after auto-tuning has been completed.
Set point
Auto-tuning
Auto-tuning started.
Scale changes disabled here.
Event input
terminal
Open
SP0 selected.
Shorted
SP1 selected.
SP0
SP1
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