System Modes - Brainchild BTC-2500 User Manual

1 6 System Modes

1 6 System Modes
The controller performs close loop control under its normal control mode condition. The controller performs close loop control under its normal control mode condition.
The controller will maintain its normal control mode when you are operating user menu, The controller will maintain its normal control mode when you are operating user menu,
setup menu or display mode, reloading default values or applying event input signal. setup menu or display mode, reloading default values or applying event input signal.
Under certain conditions the normal control mode will transfer to an Under certain conditions the normal control mode will transfer to an
The exception modes include : The exception modes include :
Mode Mode and and Auto-tuning Mode. Auto-tuning Mode.
the auto-tuning mode which performs ON-OFF plus PID close loop control. The mode the auto-tuning mode which performs ON-OFF plus PID close loop control. The mode
transfer is governed by the priority conditions. A lower priority mode can not alter a transfer is governed by the priority conditions. A lower priority mode can not alter a
higher priority mode, as shown in Figure 1.6. higher priority mode, as shown in Figure 1.6.
? Mode ? Mode
Priority Priority
High
Sleep Mode? Sleep Mode?
Low
The calibration mode, auto-tuning mode and normal control mode are in the same The calibration mode, auto-tuning mode and normal control mode are in the same
priority level. The sleep mode is in the highest priority. priority level. The sleep mode is in the highest priority.
12
Sleep Mode, Manual Mode, Failure Mode, Calibration Sleep Mode, Manual Mode, Failure Mode, Calibration
All these modes perform in an open loop control except All these modes perform in an open loop control except
No
Yes
Manual Mode? Manual Mode?
Yes
Exception Mode Exception Mode
No
No
Failure Mode? Failure Mode?
Yes
Request Request
Calibration Calibration
Mode Mode
UM25001C
System Modes System Modes
Sleep Mode : Sleep Mode :
See Section 4-11. See Section 4-11.
. .
Manual Mode : Manual Mode :
See Section 3-23. See Section 3-23.
Failure Mode : Failure Mode :
See Section 3-17. See Section 3-17.
Calibration Mode : Calibration Mode :
See Chapter 6. See Chapter 6.
Auto-tuning Mode : Auto-tuning Mode :
See Section 3-20. See Section 3-20.
Normal Control Mode : Normal Control Mode :
See Section 3-24, 3-26, 4-1 See Section 3-24, 3-26, 4-1
Figure 1.6 Figure 1.6
System Mode Priority System Mode Priority
Request Request Request Request
Auto-tuning Auto-tuning Normal Normal
Mode Mode Control Control
Mode Mode