[Ctrl] Control Algorithm (038) - Fuji Electric Micro-Controller X Socket type Operation Manual

Parameter functions and setting procedure
CtRL Control algorithm (038)
[Description] –––––––––––––––––––––––––––––––––––––––––––––––––––––––
This controller has five temperature control functions. Select the best control method for your application.
Setpoint
oNoF ON/OFF (2-position) control
PID control
Pid
FUZY Fuzzy control
SELF Self tuning control
Pid2 PID2 control
(1) ON/OFF (2-position) control (oNoF)
When you set the control method [CtRL] to " oNoF," the device uses ON/OFF control.
In ON/OFF control, the controller switches the control output between ON (100%) and OFF (0%) according to the
SV/PV magnitude relationship. You can set the output hysteresis in the control parameters [HyS] (see page 32).
Reverse Operation (Heating)
Method used to control the electrical heating furnace. Set
the [ HYS] to an appropriate value according to the control
target.
Parameter
CtRL
P-N1
HyS 0 to 50% FS (default: 1°C)
Normal operation (Cooling)
Method used to control the cooling machine.
Parameter
CtRL
P-N1
HyS 0 to 50% FS (default: 1°C)
Notes
During ON/OFF control, the P, I and D settings do not affect control.
●
In the manual operation during ON/OFF control, MV displayed by pressing
●
displayed by pressing
If the hysteresis width is narrow, and PV and SV are nearly equal, the output may frequently switch
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on and off. Note that it may affect the contact life.
Related parameters:
• Control action [P-N1] (see page 57)
• Hysteresis range for ON/OFF control [HyS] (see page 32)
Description
Set value
oNoF
2 or 3
Set value
oNoF
0 or 1
key is 0%.
Set value
SV
PV<SV
ON
Control
output
OFF
Set value
SV
PV>SV
ON
Control
output
OFF
36
PV
HYS
PV>SV
PV
HYS
PV<SV
key is 100%, and MV
t
t