Auber Instruments SWA-2441B 사용 설명서 - 페이지 3
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Display mode 4: Manual mode.
Press the ◄ key for 3 seconds to enter the manual mode. In this mode, the
lower display has an H on the most left. The number on the right is the
percentage of power output. Press the ▼or ▲ to adjust the power. Press the
◄ key for 3 seconds again to exit this mode. For more details, please see 4.3.
Display mode 5: Temperature control parameter setting.
Press the SET key for 3 seconds to enter the temperature control parameter
setting mode. The upper display window shows the parameter symbol to be
changed, the lower display shows its value. Press ◄, ▼or ▲ to change the
setting. Then, press SET to go to next parameter. If no key is pressed for 10
seconds, the display will return to mode 1 automatically. The change of value
will take effect without the need for pressing the SET key. Figure 4 shows the
flow chart of the parameters.
Note: If the controller is locked (see 4.13), only limited parameters (or no
parameters) can be changed.
4.2 Parameter Name, Range and Initial Setting
See Table 2 and Figure 4 for parameter table and flow chart.
4.2.1 Alarm parameters
This controller has two alarm outputs: Alarm 1 (AL1, NO relay) and Alarm 2
(AL2, NO relay). Two red alarm indicators are located on the front panel: AL1
and AL2. Alarm 1 and AL1 indicator are synchronized. Alarm 2 and AL2
indicator are synchronized. When the AL1 (AL2) indicator is ON, alarm 1 (alarm
2) relay pulls in. When the AL1 (AL2) indicator is OFF, alarm 1 (alarm 2) relay
drops off.
Each alarm is set by three parameters: ALP, AL and Hy. ALP1, AL1 and Hy1
are for Alarm 1. ALP2, AL2 and Hy2 are for Alarm 2. Alarm 1 can be set as
either temperature alarm (ALP1 = 1 ~ 4) or timer alarm/output (ALP1 = 0).
Alarm 2 can only be used for temperature alarm (ALP2 = 1 ~ 4). See ALP
definition below.
ALP defines the type of alarm.
ALP = 0, timer alarm/output (alarm 1 only)
ALP = 1, high limit temperature alarm.
ALP = 2; low limit temperature alarm.
ALP = 3; deviation high temperature alarm.
ALP = 4, deviation low temperature alarm.
Note: When ALP1 is set to 0 (for timer output), parameter AL1 and Hy1 are not
in use. Only ALP1 can be set to 0. ALP2 = 0 is not functional for SWA-2441B.
AL is for the alarm temperature setting. When alarm is set for high/low limit
alarm, its value is the temperature that alarm will turn on. When alarm is set for
high/low deviation alarm, its value indicates that the alarm will turn on when
temperature is deviated AL degree from the set temperature (SV). Note: when
alarm is set to deviation alarm (ALP1 / ALP2 is set to either 3 or 4), AL1 / AL2
can only be set to 100 as maximum.
Hy is the hysteresis band of temperature alarm. In heating mode, for high limit
or deviation high alarm mode, the alarm will turn off when the temperature is Hy
degree below alarm on setting; for low limit and deviation low alarm mode, the
alarm will turn off when temperature is Hy degree above the alarm on setting.
Example 1: ALP1 = 1 (high limit alarm), AL1 = 250, and Hy1 = 5. In this case,
alarm 1 will turn on when temperature goes above 250 degrees (AL1) and turn
off when temperature drop to 245 degrees (AL1-Hy1).
Example 2: SV = 200, ALP1 = 4 (deviation low alarm), AL1 = 10, and Hy1 = 5.
In this case, alarm 1 will turn on when temperature drop to 190(SV-AL1) and
turn off when temperature goes up to 195 (SV-AL1+Hy1).
4.2.2 Hysteresis Band "Hy"
2021.01
The Hysteresis Band parameter Hy is also referred as Dead Band, or
Differential. It permits protection of the on/off control from high switching
frequency caused by process input fluctuation. Hysteresis Band parameter is
used for on/off control, as well as the on/off control at auto tuning. For example:
When controller is set for on/off heating control mode, the output will turn off
when temperature goes above SV+ Hy and on again when it drops to below
SV-Hy.
Table 2. System parameters.
Mode 2: Press ▲ key for 3 seconds then release
Code
Sign
Description
Sp
SP
Set Value
Mode 5: Press SET key for 3 seconds then release
AL1
AL1
Alarm 1 setting
AL2
AL2
Alarm 2 setting
SC
SC
Input offset
P
P
Proportional Constant
I
Integral time
I
Derivative time / delay
D
d
time
At
At
Auto-tune
t
t
Cycle time
Hy
Hy
Hysteresis band
Alarm 1 hysteresis
Hy1
Hy1
band
Alarm 2 hysteresis
Hy2
Hy2
band
dP
Decimal point position
dP
ALP1
Alarm 1 definition
ALP1
ALP2
Alarm 2 definition
ALP2
CooL COOL
Cooling control
outH
Output high limit
outh
Lock
Lock
Configuration privilege
Sn
Sn
Input type
OPA
OPA
Output Mode
dIL
DIL
Input low limit
dIH
DIH
Input high limit
CF
CF
Display unit
Mode 3: Press ▼ key for 3 seconds and release
TE1
Timer 1
tE1
TE2
Timer 2
Te2
Timer unit and timer
UPT
UPT
mode
INT
INT
Timer control mode
4.2.3 At (Auto-tuning)
The auto-tuning function (also called self-tuning) can automatically optimize the
PID parameters for the system. The auto-tuning function will use the on/off
mode to heat up the system until it passes the set point. Then let it cool down. It
will repeat this about three times. Based on the response time of the system,
the built-in artificial intelligence program will calculate and set the PID
parameters for the controller. If your system has a very slow response, the auto
tuning could take a long time.
To activate auto-tuning, enter the parameter setting mode, set At = ON. The
"AT" LED on the left lower corner of the controller will light up. Auto-tune will
finish when the AT LED turns off. The newly calculated PID parameters are set
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Initial
Setting Range
Remark
Setting
Decided by DIL, DIH
100
-1999 ~ +9999 ˚C or ˚F
999.9
-1999 ~ +9999 ˚C or ˚F
0.0
-20 ~ 20
0.0
0.1 ~ 200.0
15.0
0 ~ 2000
240
0 ~ 200
30
On/off
Off
2 ~ 120
10
0.1 ~100.0
1.0
0.1 ~100.0
1.0
0.1 ~100.0
1.0
0 or 1
1
0 ~ 4
0
0 ~ 4
1
On/Off
Off
0 ~ 100%
100
0 ~ 50
0
See Table 3
K
0
0
-1999 ~ DIH
0.0
dIL ~ 9999
999.9
C, F
C
0 ~ 9999
10
0 ~ 9999
0
0 ~ 3
0
0 ~ 8
1
4.2.1
4.10
4.3.1
4.2.3
4.4
4.2.2
4.2.1
4.6
4.2.1
4.10
4.12
4.13
4.5
4.9
4.7
4.11
4.14
4.15
4.16
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