Yudian (H.K.) Automation Technology Co. Ltd.
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8785 Fax: +852-2770 8796
PARAMETER DESCRIPTION
*x refers to channel number, can be 1~2, 1~4, 1~6 for AI-702M, 704M and 706M respectively.
Parameter Name Remarks Setting range
x channel high alarm on when PVx (the present value of x
channel)>H.ALx;
H.ALx High limit alarm
Alarm releases when PVx<H.AL - dFx. -1999~+9999 or
Set H.ALx maximum value will disable function defined unit
x channel low alarm on when PVx<L.ALx;
L.ALx Low limit alarm Alarm releases when PVx>L.ALx + dfx.
Set L.ALx minimum value will disable function
dF is set to avoid high frequent alarm on/off actions 0~999.9 or
dFx Dead band
caused by process input fluctuation. 0~9999 units
Sn Input spec. Sn Input spec.
0 K 1 S
2 R 3 T
4 E 5 J
6 B 7 N
8 WRe3-WRe25 9 WRe5-WRe26
Extended
10 11~18 Spare
input spec.
19 BA2 (JPt100) 20 Cu50
Pt100
21 Pt100 22
(-100.00~+300.00)
23~24 Spare 25 0~75mV
26 0~80ohm 27 0~400ohm
0~100mV, 0~5V (J3);
28 0~20mV 29
0~20mA (J4)
30 0~60mV 31 0~1V
Input
Snx 0.2~1V ; 0 ~ 39
specification
two-wire 1~5V voltage (J3)
32 33
re-transmitter 4~20mA current (J4)
(J5)
Extraction for range:
Extraction for
38 39 1~5V (J3)
range: 0.2~1V
4~20mA (J4)
Note: Input spec. should be compatible with input module.
For those spec. unknown, use J1 for thermocouple and
mV inputs, J2 for two-wire RTD, and J0 for three-wire
RTD.
Multiplication: set Sn3=40, PV3=PV1 x PV2 (PV refer to
input value)
Summation: set Sn3, Sn4, or Sn5 =41, its input is the sum
of the inputs of previous channels, e.g. when Sn5=41,
PV5=PV1+PV2+PV3+PV4.
Subtraction: set Sn3=42, PV3=PV2-PV1
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dIPx is set to select display resolution for channel x.
Linear input: display resolution of dIP=0,1,2,3 are 0, 0.0,
0.00 and 0.000
Decimal point
dIPx Thermocouple or RTD inputs: when dIP=0, the display 0~3
position
resolution is 1 ; when dIP=1, the resolution is 0.1 .
Note: dIP only affects the display, and has no effect on
internal data. Resolution becomes 1 when over 1000 .
dIL and dLH define the corresponding scale range of linear
inputs such as mV, 0~5V, 1~5V, 0~10mA, 4~20mA.
dILx Scale low limit When the temperature input is retransmitted, dIL/dIH also
defined the low/high limit of temperature.
For example, a pressure transmitter transfers the pressure
-9990~+30000
to standard 1~5V signal and sends to input channel 1.
units or 0.1
The input of 1V indicates the pressure=0MPa, and 5V
indicates the pressure=1MPa, and expected display
dIHx Scale high limit resolution is 0.001MPa. Then the parameters should be
set as below:
Sn1=33, dIP1=3, dIL1=0.000, dIH1=1.000
For thermocouple or three-wire RTD inputs, the units of Sc
is 0.1 . For example, when Sc=-100, the actual
offset=-10 , then the measured temperature will be 10
lower than that when Sc=0.
-1999~+4000
Scx Input offset For two-wire RTD inputs, the actual offset = (Sc x signal
units or 0.1
unit). The signal unit of Pt100 or 0~400ohm input is
0.02ohm, and that of Cu50 or 0~240ohm input is
0.012ohm. For example, when Sc=-50, input type is
Pt100, (-50 x 0.02ohm), then the actual offset= -1.
The value of dF will determine the ability of filtering noise.
dL=0, no filtering;
dL=1, filtering with mean;
dL=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
dLx Digital filter 0~40
can be set to 1 to 3.
If great interference exists, you can increase parameter dF
gradually to make momentary fluctuation of measured
value less than 2 to 5.
When the instrument is being metrological verified, dF can
be set to 0 or 1 to shorten the response time.
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From right side to left side, the first, second digit of AOP
respectively indicate the alarm output assignment of H.AL,
L.AL, as below:
_______ _______
ALPx =
L.AL H.AL
Regarding to parameter value: 0 refers no output.
1,2,3,4,5,6,7 respectively sends alarm output to OP1,
OP2, AL1, AL2, AU1, AU2 and MIO. Shown as below:
L.AL H.AL
No alarm 0 0
OP1 1 1
ALPx Alarm output OP2 (L5 need) 2 2 0~77
AL1 3 3
AL2 (L5 need) 4 4
AU1 5 5
AU2 (L5 need) 6 6
MIO 7 7
For example:
ALP1=43, low limit alarm (L.AL) of channel 1 output to AL2,
ALP2=53, low limit alarm (L.AL) of channel 2 output to AU1,
and both high limit alarms(H.AL) of both channel are sent to
AL1.
Define actual number of input channels. 702M: 0~ 2
Number of
Cn When Cn=2, the lower display the present value of 704M: 0~ 4
input channels
channel 2 instead of the channel number. 706M: 0~ 6
Define the initial channel number, shown on lower display,
Initial channel
Cno If instrument A is showing CH1~CH6, set Cno=7 in
number
instrument B, it shows CH7~12. (704M, 706M only)
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AF is used to select advanced function. The value of AF
is calculated as below:
AF=Ax1 + Bx2 + Cx4 + Dx8 + Ex16
A=0, Slow cyclic display;
A=1, Fast cyclic display.
Above setting only affects display and has no effect on
internal scan speed and alarm response time.
B=0, RTD input use two-wire wiring;
B=1, RTD input use three-wire wiring.
C=0, Only channel 2 is retransmitted to COMM port;
C=1, All input channels are cyclically retransmitted, and
the retransmission time interval on every channel is about
Advanced
3 seconds. The output ranges of all channels are defined
AF function 0~31
by dIL2 and dIH2.
selection
D=0, Normal;
D=1, All low limit alarms are changed to high limit alarm.
E=0, Normal;
E=1, Set M2(MIO) and M3(OUPT) support single channel
input only.
For example, to set a AI-702M with 2 inputs, fast cyclic
display, channel 1 input from three-wire RTD (J0 module
on M1 socket), channel 2 input from thermocouple (J1
module on M2 socket), current retransmission of channel
2 outputted to COMM port, the AF parameter should be
set as below:
A=1,B=1,C=0,D=0, then AF=19.
Single channel relay module provides both normal open
and normal close output, while dual relay output module
only provides NO output.
If L5 dual relay installed, set nonc=0, all in NO status, set
nonc=127, all in NC status.
NO/NC
nonc However, by parameter “nonc”, the NO output can be 0 ~63, 127
selection
changed to NC output.
nonc = Ax1 + Bx2 + Cx4 + Dx8 + Ex16 + Fx32 + Gx64
A,B,C,D,E,F,G respectively set NO/NC output of OP1,
OP2, AL1, AL2, AU1, AU2 and MIO. 0 means the
corresponding output is NO, and 1 means NC output.
OPn=0, OUTP port is for alarm output.
OPn=1~4, OUTP port is used for retransmission of
Select the channel OPn.
OPn channel to be OPn=7, Re-transmit the minimum value, among all 0~4, 7~8
retransmitted channels (defined by Cn) to OUTP
OPn=8, Re-transmit the maximum value, among all
channels (defined by Cn) to OUTP
Yudian (H.K.) Automation Technology Co. Ltd.
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Low limit of
OPL retransmission When OUTP works as re-transmitter, OPL/OPH define the 0~110
current low/high limit of re-transmisson. The unit is 0.1mA.
For example, to transmit the channel 1 input 0~600 into
High limit of 4~20mA output, the parameters should be set as below:
OPH retransmission dIL1=0, dIH1=600, OPn=1, OPL=40, OPH=200 0~220
current
Atmospheric Defined atmospheric pressure, when dry bulb, wet bulb
Po 1~120.0
pressure humidity measurement activated. Unit = KPa
Defined wind speed, when dry bulb, wet bulb humidity
SPEd Wind speed 0.01~10.00
measurement was activated. Unit = m/S
Every instrument in the same communication line should
be assigned to different communication address. The
Communication communication applies AIBUS protocol. Every input
Addr 0 ~100
address channel takes one address. For example, if Cn=3 and
Addr=10, then the communication address 10~12 are
assigned to the instrument.
When COMM module interface is used for communication,
bAud defines the baud rate with range 300~19200bit/s.
When linear current output module is installed in COMM
socket, and bAud is set to 0~220, the COMM output can
bAud Baud rate work as retransmission output. It can retransmit channel 0 ~19.2K
2 input or cyclically retransmit all input channels into linear
current. bAud defines the output high limit, and Addr
defines the low limit. The unit is 0.1mA. For example,
to output 4~20mA current, Addr should be set to 40, and
bAud=200.
Loc=0: Allow to display and modify the field parameters
only, which is defined in EP1~EP12.
Loc Parameter lock 0 ~9999
Loc=1: Display the field parameters, without modification.
Loc=808: Allow to display and set all parameters.
When configuration of the instrument is completed, most
parameters are able to hide from field operators to avoid
improper configuration.
EP1~EP12 define none or up to 12 field parameters for
operators from parameter table, except EP itself, like
H.AL1, L.AL1 and.etc.
Field If the number of field parameters required is less than
EP1-12 NonE~bAud
parameter 12(sometimes even none), define field parameters from
small number, the next unused EP set to NonE.
E.g. Six parameters of H.AL1 to H.AL6 (all channels’ upper
alarm) are need to be modified by field operators, EP
setting are as follows:
EP1=H.AL1, EP2=H.AL2, EP3=H.AL3, EP4=H.AL4,
EP5=H.AL5, EP6=H.AL6, EP7=NonE.
If no field parameter is required, just set EP1=NonE, then
set Loc to 0 or 1.
Yudian (H.K.) Automation Technology Co. Ltd.
Website: http://www.yudian.us http://www.yudian.com.hk
Email: sales@yudian.com.hk Tel: +852-2770
8785 Fax: +852-2770 8796
