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4-27
Chapter 4. Functions
Handling Precautions
•
If the firmware version of the MAIN block is 1.x.x (where x stands for any
number), the SP lag does not operate even though it can be set.
z
ON/OFF control
The settings related to ON/OFF control can be configured for each control loop.
Item (bank)
Display
Description
Initial value
Differential for ON/OFF
control
(CONTROL bank)
MENU > Control
Differential for ON/OFF
control
0.0000 to 32000
5.0000
The action of the ON/OFF control is as shown below.
ON
Heating operation (reverse action)
Cooling operation (direct action)
ON
SP
SP
PV
PV
Differential
Differential
In the diagram,
z
means that ON/OFF changes at that value
means that ON/OFF changes after that value is passed