Ibx WB-T Manual De Usuario página 7

5. Self-tuning of PID
When the temperature control effect is not ideal, a system self-tuning can be carried out where the
equipment will automatically configurate its PID parameters. To do that, follow the next instructions:
- Press AT for 6s → the controller will run the auto-tuning function. The AT indicator will flash.
- To stop the process, press AT for 6s while it is running.
- During the process, the SET button does not work, and the lower window always displays the
temperature set value.
6. Internal parameters setting
6.1. How to enter
To adjust the internal parameters, you must enter the required password. To do that, follow these
instructions:
1. Press SET for 3s → the controller will display the password prompt Lc.
2. Use ◄ ▼▲ to choose the required value (see the password values below).
3. Press SET to enter → the controller will enter the internal parameters setting state.
To return to the regular state at any time, press SET for 3s.
6.2. Parameter tables
INDICATOR NAME
Lc Password
Over-temp
ALH
alarm
Under-temp
ALL
alarm
T Control cycle
Proportional
P
band
Integration
I
time
Differential
d
time
Zero point
Pb
adjustment
Large value
adjustment
PK
INSTRUCTIONS OF THE FUNCTION
The password to modify the parameters in this table is
Lc = 3
If SV > (SP + ALH), the ALM light turns on. The buzzer
sounds and the heating output turns off.
If SV < (SP – ALL), the ALM light flashes, the buzzer
sounds.
The temperature control cycle.
Adjustment of proportional function.
Adjustment of integration function.
Adjustment of differential function.
When the error is comparatively larger, this value might
need adjustment.
Pb = actual value – measure value
Correction of errors caused by sensor high temperature
values.
actual value
×
= 1000
PK
-
measured value
measured value
7
(RANGE)
DEFAULT VALUE
0
(0～100.0℃)
20.0
(0～100.0℃)
0
(1～60S)
5
(1～400.0℃)
35.0
(1～2000S)
200
(0～1000S)
200
(-12.0～12.0℃)
0
(-999～999)
0