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AUBER INSTRUMENTS

Table 4. Control parameters.

Symbol

Description

Proportional Band

Range Limit

SouF

Damp Constant

Control Cycle

FILt

Digital Filter Strength

FILt

End

Exit

Note 10. Proportional Band Range Limit (bb): This parameter sets a temperature

range in which the Proportional Constant (P) functions. If the absolute value of the

difference between PV and SV is greater than bb, the proportional output will

always be 100%. If a user wish to use parameter bb to fine tune the performance

of the controller, the value of bb should be smaller than the value of P. By default,

bb is set to 300 degrees.

Note 11. Damp Constant (SouF): This constant can help the PID controller further

improve its control quality. It uses the artificial intelligence to dampen the

temperature overshot. When SouF is set to a small value, the system may

overshoot; when SouF is set to a high value, the system will be over-damped.

Figure 4. Using damp constant to adjust the control results.

Note 12. Control Cycle (ot): It is a time period setting (unit in seconds) that decide

how often does the controller calculates and changes its output. A smaller ot can

result in a better control precision. However, when using the relay output or control

an external relay/contactor, set ot to a small value will operate the relay frequently

and shorten the its life. When Outy is set to 1 or 2, set ot to 1 ~ 3 seconds; when

Outy is set to 3, set ot to 20 ~ 40 seconds; when Outy is set to 4 or 5, ot setting is

ignored. Generally speaking, set ot to small value for a fast response system, set

ot to larger value for a slow response system.

Note 13. Digital Filter (Filt): Filt = 0 (default), filter disabled; Filt = 1, weak filtering

effect; Filt = 3, strongest filtering effect. Stronger filtering increases the stability of

the readout display, but causes more delay in the response to changes in

temperature.

5.3 Set value setting and alarm setting (accessed by code 0001)

The set value and alarm parameters are listed in Table 5. To change the

parameters, press SET key, enter code "0001", and press SET key again. The

procedures to change control parameters are similar to what is shown in Figure

Table 5. Set temperature and alarm parameters.

Symbol

Target temperature

AH1

J1 pull-in temperature

AH1

AL1

J1 drop-out temperature

AL1

END

Note 12. There are two ways to set the target temperature:

2021.05

Setting Range

Initial

1 ~ 1999

0.1 ~ 1.0

1 ~ 500 (sec)

0 ~ 3

Initial

Description

Setting

800

(Set Value)

900

800

Exit

a. In the normal operation mode, press

Note

decrease the SV. Then wait about 4 seconds to allow the controller save the new

SV.

300

0.2

b. Press SET key once, enter code 0001, the press SET key again to confirm.

Then the display will flash SV (Su) in the top display. Press the SET key again

to show the current SV setting in the bottom display. Now use >,

enter the new SV and press the SET key to save the value. Press V key to put

END on the top display, then press SET key to exit; or you can wait about 30

seconds then the controller will return to normal operation mode.

Note 13. Alarm setting (AH1 and AL1). The J1 relay can be set to works as

absolute temperature alarm (when outy = 1 or 5), or as temperature deviation

alarm (when outy = 2).

1) Absolute alarm (outy = 1 or 5)

When J1 works as an absolute temperature alarm, the AH1 is the alarm-on

temperature, AL1 is the alarm-off temperature. When AH1 > AL1, J1 works as an

absolute high temperature alarm: when PV is higher than AH1, J1 relay pulls in;

when PV is lower than AL1, J1 relay drops out. The diagram is shown in Figure 5

to illustrate how it works. When AH1 < AL1, J1 works as an absolute low

temperature alarm. A diagram is shown in Figure 6 to illustrate how it works. When

AH1 = AL1, the alarm is disabled.

2) Deviation alarm (outy = 2)

When J1 is set as a deviation alarm, it will be activated if PV deviates too far

away from the set value (SV). AH1 defines the deviation high alarm, AL1 defines

the deviation low alarm. For the deviation high alarm, when PV is higher than (SV

+ AH1) relay J1 will pull in, when PV drops below (SV + AH1 -Hy) relay J1 will

drop out; for the deviation low alarm, when PV is lower than (SV - AL1) relay J1

will pull in, when PV is higher than (SV - AL1 + Hy) relay J1 will drop out. To

deactivated the deviation high alarm, set AH1 = 0; to deactivated the deviation

low alarm, set AL1 = 0.

Note

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or V key to directly increase or

Figure.7 J1 relay works as derivation alarms

(SV = 100, AH1 = 20, AL1 = 30, Hy = 10).

and V key to

P4/7