5
SCHx Scale high limit
units
Scbx Input offset
For thermocouple, the units of Scb is 0.1 . For example, when Sc℃ b=-100,
the actual offset=-10 , then the measured temperature will be 10 lower ℃℃
than that when Sc=0.
-1999~+4000
units or 0.1℃
FILx Digital filter
The value of FIL will determine the ability of filtering noise.
FIL=0, no filtering;
FIL=1, filtering with mean;
FIL=2~40, filtering with mean and integral.
When a large value is set, the measurement input is stabilized but the
response speed is slow. Generally, it can be set to 1 to 3.
If strong interference exists, then you can increase parameter FIL gradually to
make momentary fluctuation of measured value less than 2 to 5.
When the instrument is being metrological verified, FIL can be set to 0 or 1 to
shorten the response time.
0~40
Px
Proportional
band
Proportional band in PID and APID control. Instead of percentage of the
measurement range, the unit is the same as PV.
Generally, optimal P, I, D and CtI can be obtained by auto tuning. They can
also be manually inputted if you already know the correct values.
10～9999 units
Ix Time of Integral Time of Integral in PID. No integral effect when I=0
0～9999
seconds
Dx
Time of
derivative
Time of derivative in PID. No derivative effect when d=0
0～999.9
seconds
H.ALx Alarm high limit
x channel high alarm is triggered when PVx (the present value of x
channel)>H.ALx; alarm releases when PVx<H.ALx - HYSx.
-999~+3200 ℃
L.ALx Alarm low limit
x channel low alarm is triggered when PVx<L.ALx;
alarm releases when PVx>L.ALx+HYSx.
HYSx Hysteresis
HYS is set to avoid high frequent alarm on/off actions caused by process
input fluctuation. It also works at auto-tuning.
0~999.9℃
AOPx
Alarm output
allocation
(D5 size not
support this
function)
larm
Output to
Low limit alarm High limit alarm
None 0 0
AL1 3 3
AL2 4 4
For example, AOP1=43 that the low limit alarm of channel 1 is sent to AL2,
and high limit alarms sent to AL1
0~44
Cn
Number of
input channels
Define actual number of input channels. Setting range is 1~4.
When Cn=2, the lower window display the present value of channel 2 instead
of the channel number.
1~ 4
Cno
First display
channel setting
If several of AI-7048 has used, this parameter can define the AI-7048 to
display assigned channel number on display. For example, when Cno=6, the
controller will display channel number from 6~9. (6, 7, 8, 9)
AF
Addition
function setting
1
Parameter “AF” was defined as below:
AF=A x 1 + B x 2 + C x 3 + D x 4
A=0; Normal speed in channel cycle display;
A=1; Faster speed in channel cycle display;
B=0; C=0;
D=0; Normal application; D=1; Change all of the low alarm to be high alarm;
AF2
Addition
function setting
2
Parameter “AF2” was defined as below:
AF=A x 1 + B x 2
A=0; Normal application;
A=1; Change all of the high alarm to be high deviation alarm; when deviation
value (PV – SV) > H.ALx, it will trigger the alarm. When (PV – SV) < H.ALx –
HYSx, alarm off, set the H.ALx value to maximum will disable the alarm
function.
B=0; Normal application;
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