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※ 1 Scale = 2.8uA = 1.3mV for tuning output value
PID mode selection: any one of 4 groups PID modes (n=0~3) can be selected. When n=4, program will
Select n=0~4 to
decide PID mode.
0~3 groups PID
Press
Pattern and step editing selection: edit
No. 0.
Select desired editing pattern
number
select OFF
select number
Press
Exit
pattern and step editing selection
Switch to
7
Temperature control can be achieved either by heating or cooling. In DTB
series, heating and cooling can be operated simultaneously (Dual Loop
output control) to perform temperature control. When Dual Loop output
control are used, two control outputs must be connected to the heating and
cooling devices. Please refer to the following for the operation:
: This parameter is used to select heating or cooling action if
operate either heating or cooling function in this controller. When selecting
, 1st output group is heating (reverse) control, and when selecting
, 1st output group is cooling (forward) control. At this moment, 2nd
output group is regarded as an alarm output. If user select
it indicates that user can operate Dual Loop output control function in this
controller. When selecting
control and 2nd output group is cooling (forward) control. When selecting
, 1st output group is cooling (forward) control and 2nd output group is
heating (reverse) control.
automatically select 1 group PID that is most useful for target temperature.
PID setting: n=0. Press
Proportion band setting: n=0.
Ti setting: n=0. Press
Td setting: n=0. Press
Integral deviation setting: n=0.
AT setting.
Press
in
Press
and continue setting
Press
Press
Press
Dual Loop Output Control (Heating / Cooling Control)
, 1st output group is heating (reverse)
Press
back to PID deviation setting
parameter. The following display is the example operation of pattern
Edit temperature of step No. 0
of pattern No. 0
Edit time of step No. 0 of
pattern No. 0, unit is hh.mm
Set step No. 07 in order
Edit temperature of step No. 7
of pattern No. 0
Edit time of step No. 7 of
pattern No. 0, unit is hh.mm
to set actual step No.
or
6
PID setting: n=3. Press
Proportion band setting: n=3.
Press
Ti setting: n=3. Press
Td setting: n=3. Press
Integral deviation setting: n=3.
AT setting.
Press
back to PID deviation setting
Select actual step No. when
program control is executing
Press
Set additional execution cycle
number(0 to 99)
Press
Set link pattern, OFF indicates
the program end
Press
to return pattern No. editing
mode
Heating hysteresis
ON
Heating
OFF
Set point
Figure 1. Output
operation of ON/OFF control
during dual loop output control
Output
,
Heating
0
Set point
Figure 2. PID
control,
Dead band
Cooling hysteresis
Cooling
PV
Dead band: dead
band width=positive
Cooling
PV
Dead Band is positive
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