Yudian AI Series Operating Instructions

7
5. Setting Parameters:
(Note: x means channel number. It can be 1~4.)
Parameter
Name
Remarks
Setting range
bAud
Baud rate
When COMM module interface is used for communication, bAud defines the
baud rate range is 300~19200bit/s.
0 ~ 19.2K bit/S
Addr
Communication
address
Every instrument in the same communication line should be assigned to
different communication address. The communication applies AIBUS
protocol. Every input channel takes one address. For example, if channel
number Cn=3 and Addr=10, then the communication address 10~12 are
assigned to the instrument.
0 ~ 80
SPx
Setpoint
Setpoints of channel 1~4.
-999~+ 3200℃
Atx
Auto tuning
0: Auto tuning function is disable
1: Active auto turning function to calculate the values of parameters P, I, d
and CtI. After auto tuning is accomplished, “At” will be automatically
changed to 0.
0~1
INPx
Input
specification
Define the input specification of channel 1~ 4.
INP
Input spec.
INP
Input spec.
0
K
1
S
2
R
3
T
4
E
5
J
6
B
7
N
8
WRe3-WRe25
9
WRe5-WRe26
10
Extended input spec.
11~24
Spare
25
0~75mV
26~27
Spare
28
0~20mV
29
0~100mV
30
0~60mV
31
0~1V
32
0.2~1V
0 ~ 39
dPtx
Decimal point
dPtx is set to select display resolution for channel x
for linear inputs, the corresponding display resolution of dPt=0,1,2,3 are 0,
0.0, 0.00 and 0.000
For thermocouple inputs, when dPt=0, the display resolution is 1℃; when
dPt=1, the resolution is 0.1℃.
Note: dPt only affects the display, and has no effect on internal data.
0~3
SCLx
Scale low limit
SCL and SCH define the corresponding scale range of linear inputs as mV.
-9999~+30000
units
SCHx
Scale high limit
Scbx
Input offset
For thermocouple, the units of Scb is 0.1℃. For example, when Scb=-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

Yudian AI Series Specifications

General

Control Mode	On/Off
Input Type	Thermocouple (K, S, T, E, J, B, N), RTD (Pt100, Cu50), Linear Current (4-20mA), Linear Voltage (0-5V, 1-5V)
Output Type	Relay, SSR, Linear Current (4-20mA)
Power Supply	AC 90-260V, 50/60Hz or DC 24V
Communication	RS485 Modbus RTU
Accuracy	±0.2%FS
Operating Temperature	0-50°C
Storage Temperature	-20-60°C
Humidity	85% RH (non-condensing)
Protection	IP65 (Front Panel)