Omron E5*D series User Manual page 27

• If temperature variation occurs when Temperature Sensors for Packing Machines are used even
if AT is performed
• If temperature variation occurs after a heater is replaced
• If temperature variation occurs after packing materials are changed or the packing speed is
changed
• If temperature variation occurs due to changes in the operating environment
Note: This function cannot be used during ON/OFF control or heating/cooling control.
Water-cooling Output Adjustment
Mainly, temperature variations in water-cooled extruders are suppressed to maintain stable perfor-
mance.
When hunting occurs in heating/cooling control of water-cooled extruders, it was previously necessary
to have a worker skilled in PID adjustment or water-cooled valve adjustment adjust the system.
With water-cooling output adjustment, you can automatically adjust the cooling proportional band to
suppress temperature hunting. Because adjustment is performed during operation, optimum control is
enabled even during material condition changes.
We recommend that you use water-cooling output adjustment in the following cases.
• If temperature variation occurs due to changes in the water-cooling system
• If temperature variation occurs due to changes in the cooling valve settings
• To reduce the amount of work required to adjust cooling valves
Note: This function cannot be used during any of the following: standard control, an analog input type, any other
heating/cooling method (i.e., except for water cooling), direct operation, and SP ramp operation.
Adaptive Control
Adaptive control is a control method that helps to maintain optimum temperature control by following
any changes that may occur due to system fluctuations, such as changes in the environment or equip-
ment deterioration.
With adaptive control, AT (auto-tuning) is required only the first time operation is performed. After that,
the equipment startup temperature is monitored to detect system fluctuations and update the PID con-
stants for adaptive control.
There is no need to execute AT again or to manually adjust the PID constants, and higher control per-
formance is achieved than is possible with AT alone.
We recommend that you use adaptive control in the following cases.
• To reduce decline in control performance caused by environmental changes or equipment
deterioration
• To increase control performance over AT
Note: This function cannot be used during any of the following: heating/cooling control, an analog input type, direct
operation, and SP ramp operation.
Various Indication Data
Various indication data is provided to help predict the product service life and replacement period.
You can use it in the host system to collect and analyze data and make predictions.
E5@D Digital Temperature Controllers User's Manual (H224)
1 Introduction
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