Auber Instruments SWA-2441A Gebruiksaanwijzing - Pagina 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-2441A.

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"

2019.01

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

Set Value

Mode 5: Press SET key for 3 seconds then release

AL1

Alarm 1 setting

AL2

Alarm 2 setting

Input offset

Proportional Constant

Integral time

Derivative time / delay

time

Auto-tune

Cycle time

Hysteresis band

Alarm 1 hysteresis

Hy1

band

Alarm 2 hysteresis

Hy2

band

Decimal point position

ALP1

Alarm 1 definition

ALP1

ALP2

Alarm 2 definition

ALP2

CooL COOL

Cooling control

oppo OPPO

Output power

Lock

Configuration privilege

Input type

OPA

Output Mode

dIL

DIL

Input low limit

dIH

DIH

Input high limit

Display unit

Mode 3: Press ▼ key for 3 seconds and release

TE1

Timer 1

tE1

TE2

Timer 2

Te2

Timer unit and timer

UPT

mode

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

On/off

Off

2 ~ 120

0.1 ~100.0

1.0

0.1 ~100.0

1.0

0.1 ~100.0

1.0

0 or 1

0 ~ 4

On/Off

Off

0 ~ 50

See Table 3

-1999 ~ DIH

0.0

dIL ~ 9999

999.9

C, F

0 ~ 9999

0 ~ 3

0 ~ 8

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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