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  Yudian (H.K.) Automation Technology Co. Ltd. 

                                                                                       

Website: 

http://www.yudian.us

   

http://www.yudian.com.hk

  

                                                                                                                                            Email: 

[email protected]

 

Tel: +852-2770 

8785      Fax: +852-2770 8796 

 

dIPx 

Decimal point 

position 

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   
Thermocouple  or  RTD  inputs:  when  dIP=0,  the  display 
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

★

. 

0~3 

dILx 

Scale low limit 

dIL and dLH define the corresponding scale range of linear 
inputs  such  as  mV,  0~5V,  1~5V,  0~10mA,  4~20mA.   
When the temperature input is retransmitted, dIL/dIH also 
defined the low/high limit of temperature. 
For example, a pressure transmitter transfers the pressure 
to  standard  1~5V  signal  and  sends  to  input  channel  1.   
The  input  of  1V  indicates  the  pressure=0MPa,  and  5V 
indicates  the  pressure=1MPa,  and  expected  display 
resolution is 0.001MPa.    Then the parameters should be 
set as below: 
Sn1=33, dIP1=3, dIL1=0.000, dIH1=1.000 

-9990~+30000 

units or 0.1

★

 

dIHx 

Scale high limit 

Scx 

Input offset 

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. 
For  two-wire  RTD  inputs,  the  actual  offset  =  (Sc  x  signal 
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.     

-1999~+4000 
units or 0.1

★

 

dLx 

Digital filter 

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 
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.   

0~40 

Summary of Contents for AI-702M

Page 1: ...hk Email sales yudian com hk Tel 852 2770 8785 Fax 852 2770 8796 AI 702M 704M 706M HIGH PERFORMANCE INTELLIGENT MULTI CHANNEL INDICATORS Operation Instruction Version 7 7 Ideal for measurement indication alarm calculation and retransmission of temperature pressure flow level humidity etc ...

Page 2: ...ull scale the same as that of single channel Provide high accuracy compensation function such as ice point compensation copper resistance compensation and thermostat compensation to thermocouple inputs Build in accurate internal calculation functions including square root extraction summation subtraction and multiplication Support up to 2 isolated retransmission output Any input channel can be ret...

Page 3: ...6M A J1 J2 J5 L5 L5 S 24VDC Above code symbols a AI 706M instrument with front panel dimension 96 96mm 2 thermocouple inputs 2 two wire RTD inputs 2 current inputs 4 alarm relay outputs RS485 communication interface and the supply power is 24VDC The explanation for each code is below Shows the model of the indicator AI 702M AI 704M AI 706M respectively indicate 2 4 6 channels indicator Shows dimen...

Page 4: ... 1 channel thyristor normal open output Burnt proof technology able to stand 0 3A continuous current or 1A transient current G 1 SSR voltage output 12VDC 30mA G5 2 SSR voltage outputs 12VDC 30mA S Photoelectric isolated RS485 interface S4 Photoelectric isolated RS485 interface with isolated power supply X3 Photoelectric isolated linear current output X5 Photoelectric isolated linear current output...

Page 5: ...r J4 current input module 1 5V 4 20mA etc Two wire transmitter inputs with J5 module that provides 24VDC power supply Connect to 4 20mA two wires transmitter Maximum lead wire resistance for RTD input 2 wire type RTDs 2 ohm for Pt100 or 0 400 ohm input 1 ohm for Cu50 and 0 200 ohm input 3 wire type RTDs 5 ohm Measurement range K 0 1300 S 0 1700 R 0 1700 T 200 350 E 0 1000 J 0 1200 B 0 1800 N 0 130...

Page 6: ...nd signal terminals 2300VDC Between isolated eletroweak signal terminals 600VDC Response time 1 5 seconds if digital filter parameter is set as 0 or 1 Automatic pilot time interval Approx 1 2s or 2s configurable Alarm function High and low alarm configurable separately for each channel Alarm output Relay contact output NO or NC 250VAC 1A or 30VDC 1A No contact discrete output NO or NC 250VAC 0 3A ...

Page 7: ...he resistance of the wire To apply two wire method J2 module should be installed and resistance of each wire should be less than 2ohm AI 702M 704M 706M can measure the lead wire resistance of two wire method and save it to parameter Sc However the lead wire resistance changes as the temperature changes If the lead wires has the same ambient temperature as that of the instrument and no other resist...

Page 8: ... be displayed one by one When the parameters are set and the parameter lock is locked press can access Field Parameter Table The value of a parameter can be modified by or Press to go to next parameter Press and hold can return to the previous parameter Press can exit parameter setting status 3 Alarm display The lower display window shows channel number If high or low alarm occurs the first digit ...

Page 9: ...ns That the on off period is as long as 1 6 second means no communication and no alarm it can be treated as normal The light flashing with period 0 6 second means no communication and general error occurs The light quickly flashing with period 0 3 second means no communication and severe error such as input over range occurs The light keeping off means the instrument power off or damaged the light...

Page 10: ...ns caused by process input fluctuation 0 999 9 or 0 9999 units Snx Input specification 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 10 Extended input spec 11 18 Spare 19 BA2 JPt100 20 Cu50 21 Pt100 22 Pt100 100 00 300 00 23 24 Spare 25 0 75mV 26 0 80ohm 27 0 400ohm 28 0 20mV 29 0 100mV 0 5V J3 0 20mA J4 30 0 60mV 31 0 1V 32 0 2 1V two wire re transmitter J5...

Page 11: ...lay resolution is 0 001MPa Then the parameters should be set as below Sn1 33 dIP1 3 dIL1 0 000 dIH1 1 000 9990 30000 units or 0 1 dIHx Scale high limit Scx Input offset 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 For two wire RTD inputs the actual offset Sc x signal ...

Page 12: ...wn as below L AL H AL No alarm 0 0 OP1 1 1 OP2 L5 need 2 2 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 0 77 Cn Number of input channels Define actual number of input channels When Cn 2 the lower displ...

Page 13: ...e 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 0 31 nonc NO NC selection Single channel relay module provides both normal open and normal close output w...

Page 14: ... 19200bit s When linear current output module is installed in COMM socket and bAud is set to 0 220 the COMM output can work as retransmission output It can retransmit channel 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 bAu...

Page 15: ...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 ...

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