Omron E5 J Series, Руководство пользователя

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E5
j
J E5
j
J
d
-
u °
C/
°
F Selection
To change the temperature display unit from
°
C to
°
F, press the Up
Key so that
f
will be displayed in the set value display.
c
:
°
C
f
:
°
F
SV SV
E5
j
J with Communications Function
The communications specifications of the E5
j
J are as follows:
•
Data bit length: ASCII 7- (set before shipping) or 8-bit code
•
Parity check: None, even (set before shipping), or odd
•
Stop bit length: 1 or 2 (set before shipping)
•
Use the following parameters to change the above setting.
len
Data Bit Length
Use this parameter to change the communications data bit length.
prty
Parity Check
Use this parameter to change the communications parity check.
none
: None
eUen
: even
odd
: odd
SV SV
SV
sbit
Stop Bit
Use this parameter to change the stop bit length.
s.tĆb
Stable Range (
°
C/
°
F)
This parameter is used to decide conditions under which fuzzy self-tuning operates and can be set within a range of 0.1 to 999.9. If the absolute
value of the deviation (the difference between the process value and set point) is within the stable range, temperature control operation is
deemed smooth and fuzzy self-tuning will not start.
Set point
Stable
range
Stable
PID before tuning
PID after tuning
Fuzzy self-tuning
It is deemed that the characteristics
of the control device have been
changed so that the response wa-
veform is processed to tune the PID
constants.
alfa
(
α
) PID Control Type
By adjusting internal parameter
α
of 2-PID within a range of 0.00 to 1.00, PID control such as derivative preceding PID or proportional 2-PID
(I-PD) control will be possible.
Set point
α =
0.00 (Derivative preceding PID)
α =
1.00
(Proportional preceding PID)
Difference in set point response due to
α
.
α =
0.65
To increase the set point response speed, decrease the value of parameter
α
. If the value of parameter
α
is decreased, however, the overshoot-
ing value will increase.
ret
Automatic Return of Display Mode (Return Time)
By setting automatic return of display mode, the display will return to the normal operation display (on level 0 displaying the process value or set
point) if no key is operated for the time set with this parameter. The return time can be set within a range of 0 to 99 s. If the return time is set to 0 s,
this function will not work. The return time is set to 0 s before shipping.