E5AK/E5CK/E5EK
E5AK/E5CK/E5EK
114
Startup Conditions of DT
1. DT will start if the temperature that has been stable varies
due to external disturbance and the deflection of the temper-
ature exceeds the stable range, and then the temperature
becomes stable, provided that the number of maximum tem-
perature values is less than four.
2. DT will start if the set point is changed under the condition
that SRT does not start and the temperature becomes stable,
provided that the number of maximum temperature values is
less than four.
If there are four or more maximum temperature values, HT
will start.
SP
Temperature
Extreme value 2
Set point change
Extreme value 1
Balanced Status
If the process value is within the stable range for 60 s when there
is no output, it is deemed that the the temperature is balanced.
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
adjusted. For details, refer to your User‘s Manual.
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