Auber Instruments SYL-2362A2 Instruction Manual - Page 4

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AUBER INSTRUMENTS

Table 4. Temperature and alarm parameters

Symbol

Target temperature

AH1

J1 on temperature

AL1

J1 off temperature

AL1

AH2

J2 on temperature

AH2

AL2

J2 off temperature

AL2

END

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

a. During the normal operation mode, press ^ or V keys once to switch the

display from PV to set value. The display will start to blink. Press ^ or V keys

again to increase or decrease the SV. When finished, wait 8 seconds and the

settings will take effect automatically (the display will stop blinking).

b. Press SET key once. Use >, ^ and V keys to enter code 0001. Press SET key

to confirm, then the display would be SV (Su). Press SET key again to display

the SV setting. Use >, ^ and V keys to enter the new SV value and press SET

key to confirm. Press V key to change the display to END. Then, press SET key

to exit. You can also ignore the steps after confirmation of SV. The controller will

returns to normal operation mode automatically if no key is pressed for 1 minute.

This method is easier for large temperature change.

Note 13. Alarm setting. The J1 relay is controlled by parameters AH1 and AL1.

And the J2 relay is controlled by parameter AH2 and AL2. AH1 (or AL2) is the

temperature to turn the J1 (or J2) relay on; AL1 (or AL2) is the temperature to turn

the J1 (or J2) relay off. When AH1>AL1 (or AH2>AL2), the J1 (or J2) alarm is set

for absolute high alarm as shown in Figure 5 below. When AH1 <AL1 (or

AH2<AL2), the J1 (or J2) alarm is set for absolute low alarm as shown in Figure 6

below. When AH1=AL1 (or AH2=AL2), the J1 (or J2) alarm is deactivated.

Please note that J2 can't be used as alarm when "outy" is set to 1, 4 or 5.

AH1

AL1

Relay on

Figure 5. Absolute high alarm

6. 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.

2021.10

Initial

Description

Setting

800

(Set Value)

800

900

800

900

Exit

AL1

AH1

Relay on

Figure 6. Absolute low alarm

Note

6.1 To activate Auto-tuning, press and hold > key until the "AT" indicator starts to

blink, which indicates auto-tuning is in progress. When "AT" stops blinking, the

auto-tuning is finished. Now, newly calculated PID parameters are set to be used

for the system. Please note that Auto-tuning is only for PID control mode (when

"outy" is set at 1 or 2).

6.2 To stop the Auto-tuning, press and hold > key until "AT" indicator stops blinking.

Then, the previous PID parameters values are resumed.

7. On/off control mode

On/off control mode is not as precise as PID control mode. However, it is

necessary for inductive loads such as motors, compressors, or solenoid valves

that do not like to take pulsed power. It works like a mechanical thermostat. When

the temperature passes the set point, the heater (or cooler) will be turned off. When

the temperature drops back to below the hysteresis band (dead band) the heater

will be turned on again.

To use the on/off mode, set Outy to 3 or 4 depending on the output device to be

used. Then, set the Hy to the desired range based on control precision

requirements. Smaller Hy values result in tighter temperature control, but also

cause the on/off action to occur more frequently. In the PID parameters menu

(code 0036), only ot and FILt are used. P, I, D and SouF are not meaningful.

100

8. Manual mode

Manual mode allows the user to control the output as a percentage of the total

heater power. It is like a stove dial. The output is independent of the temperature

sensor reading. One application example is controlling the strength of boiling

during beer brewing. You can use the manual mode to control the boiling so that

it will not boil over to make a mess. The manual mode can be switched from PID

mode but not from On/off mode. To switch from the PID to the manual mode, press

and hold the SET key until the "AT/M" indicator turned on (about 5 seconds). In

the manual mode, the top display is for the process temperature. The bottom right

is the percentage of power output. The bottom left display show an "M" for user

to easily identify the controller is in manual mode. To switch from manual to PID

WWW.AUBERINS.COM

AT end

AT start

AT calculation

ON OFF

ON/OFF

PID

Figure 7. Auto-tuning

When heating, and outy = 3 or 4,

If PV (SV - Hy), relay on

SV-Hy

If PV SV, relay off

(SV = 100, Hy = 3)

Relay On

Figure 8. On/off control mode

P4/6