FX2N-2AD SPECIAL FUNCTIONBLOCK USER'S GUIDE
Contents
1. Environmental specifications other than the above mentioned are the same as the main unit of the Programmable controller Refer to the Hardware manual of the Programmable controller 5 2 Power supply specification and others Item Content Analog circuits 24V DC 10 50mA Internal power supplied from the main unit Digital circuits 5V DC 20mA Internal power supplied from the main unit Photo coupler isolation between analog and digital circuits Isolation No isolation between analog channels Number of occupied I O points The blocks occupies either 8 input or output points can be either inputs or outputs 5 3 Defining gain and offset Item Voltage input Current input At shipping the unit is adjusted to a digital range of 0 to 4000 for an analog voltage input of 0 to 10V DC When using an FX2n 2AD for current or differing voltage inputs except 0 to 10V DC it is necessary to adjust the offset and gain 0 to 10V DC 0 to 5V DC input resistance 200KQ Warning this unit may be damaged by an input voltage in excess of 0 5V 15V DC Digital output 12bit 2 5mV 10V 4000 At shipment Change depending on the input characteristic 0 1V Range of analog input f f 4 to 20mA input resistance 2509 Warning this unit may be damaged by an input current in excess of 2mA 60MA 4uA 20 4 A 4000 Change depending on the input characteristic 0 16mA2. 9 Notes in drive 7 1 Change in input characteristic At shipment 0 to 4000 range is selected for 0 to 10V DC input When using an FX2N 2AD for current or differing voltage inputs except 0 to 10V DC it is necessary to adjust the offset and gain The module does not allow different input characteristics for two channels Set analog values within the range specified in the table below when changing the input characteristic Range of input characteristic Voltage input 0 to 1V 5 to 10V Current input 0 to 4mA 20mA Analog value when digital value is 0 Analog value when digital value is 4000 Resolution changes depending on the set value when the input characteristic changes accordingly Example Resolution becomes 5 0V 4000 1 25mV at voltage input 0 to 5V 0 to 4000 Integrated accuracy does not change Voltage input 0 1V Current input 0 16mA The adjustment of the offset and gain values sets a digital equivalent to the analogue data The POT requires 18 revolutions to move between MIN and MAX setting Voltage input Current input Volume a FX2N 2AD FX2 n 2AD 1 G VINO oa VINO z Voltage TINO Current ft INO generator generator j COMO COMO O cA 1 The digital value
3. 2 5ms 1 channel synchronized to the sequence program Resolution Integrated accuracy Processing time Analog value 0 to 20mA Analog value 0 to 10V Pita acres oa Digital value 0 to 4000 Digital value 0 to 4000 At shipment Q Q Input characteristics 10 238V Digital value amp Digital value gt 0 gt 10V Analog value Analog value The input characteristic is the same for each channel 6 1 Buffer memory BFM b15tob8 b7tob4 b3 b2 b1 bO number 0 Reserved Current value of input data lower 8bit data 1 Reserved Current value of input data higher 4bit data 2 to 16 Reserved 7 Reserved Analog to digital Analog to digital conversion beginning conversion channel ass Reserved more BFM 0 The current value of the input data for the channel specified with BFM 17 lower 8bit data is stored The current value data is stored by binary BFM 1 The current value of the input data higher 4bit data is stored The current value data is stored by binary BFM 17 b0 Channel CH1 CH2 which does the analog to digital conversion is specified b0 0 CH1 b0 1 CH2 b1 0 1 The A D conversion process is started Write read data to the above mentioned buffer memory according to the programming example of 8 Program example 7 Adjustment of offset and gain 8 Program example
4. Manual number JY992D74701 Manual revision D Date SEPTEMBER 2002 a MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUTI TOKYO 100 8310 TELEX J24532 CABLE MELCO TOKYO HIMEJI WORKS 840 CHIYODA CHO HIMEuI JAPAN Effective Sep 2002 Specifications are subject to change without notice JY992D74701D
5. Repeat the offset and gain adjustment alternately until a stable value is reached 3 Each channel is common to the analog input circuit However check each channel individually for maximum accuracy 4 Adjust offset gain by using subsection 8 3 Example of programming making average value data when a digital value is not steady 5 Adjust the gain before the offset The following program examples 8 1 and 8 3 are formula circuits The device numbers that have been underlined can be assigned by the user during programming 8 1 Example of programming analog input X000 omi TO KO K17 H0000 K1 a Selecting A D input channel 1 TO KO K17 H0002 K1 b A D conversion beginning of CH1 A FROM KO KO K2M100 K2 c Reading of digital value of CH1 MOV K4M100 D100 H 9 The higher 4 bits of CH1 are Saree moved to the lower 8 bits and it is X001 stored in D100 33 TO KO K17 H0001 K1 e Selecting A D input channel 2 TO KO K17 H0003 K1 f A D conversion beginning of CH2 4 FROM KO KO K2M100 K2 g Reading of digital value of CH2 MOV K4M100 D101 h The higher 4 bits of CH2 are moved to the lower 8 bits and it is stored in D101 Analog to digital conversion execution input of CH1 X000 Analog to digital conversion execution input of CH2 X001 At the same time X000 and X001 can be turned ON A D input data CH1 D100 Replace with auxiliary relay M100 to M115 Ass
6. connected by a cable on the right of the main unit 2 Up to 4 FX2n 2AD units can connect to the FXoN series PLC up to 5 for FX1N up to 8 for FX2N or up to 4 for the FX2nc series PLC all with powered extension units However the following limitation exists when the undermentioned special function blocks are connected FX2n Main unit and powered extension units of 32 points I O or less Consumption current available for undermentioned special function blocks lt 190mA FX2N Main unit and powered extension units of I O 48 points or more Consumption current available for undermentioned special function blocks lt 300mA FXanc Up to 4 undermentioned special function blocks can be connected regardless of the system I O FXon 1N Main unit and powered extension units Up to 2 undermentioned special function blocks can be connected regardless of the system I O FX2N 2AD 50mA FX2N 2DA 85mA FXoN 3A 90mA Consumption current of 24V DC for one unit The consumption current of the above units is to be subtracted from the service power supply of the host PLC 3 The blocks occupies 8 points The 8 points can be allocated from either inputs or outputs 4 FXe2n 2AD consumes 5V DC by 20mA The total 5V consumption of all special function blocks connected to an FX2N FX2Nc main unit or FXen extension unit must not exceed the 5V source capacity of the system 5 Specifications 5 1 Environme
7. Changes for the Better aa MITSUBISHI PROGRAMMABLE CONTROLLERS MELSEG F FX2n 2AD SPECIAL FUNCTIONBLOCK USER S GUIDE JY992D74701D This manual contains text diagrams and explanations which will guide the reader in the correct installation and operation of the FX2N 2AD special function block and should be read and understood before attempting to install or use the unit Further information can be found in the FX SERIES PROGRAMMING MANUAL II FXon FX1N FX2n FX nc SERIES HARDWARE MANUAL of each PLC 1 Introduction The FX2n 2AD type analog input block hereafter referred to as the FX2n 2AD is used to convert the analog input of two points voltage and current input into a digital value of 12 bits and to forward the values to the Programmable Controller hereafter referred to as a PLC FX2n 2AD can connected to the FXon FX1N FX2N and the FX2nc series Programmable Controllers 1 The analog input is selected from the voltage or current input by the method of connecting wires At this time assume the setting to be two channels common analog input voltage or current input 2 The analog to digital conversion characteristics can be adjusted 3 The block occupies 8 I O points which can be allocated from either inputs or outputs 4 The data transfer with the PLC uses the FROM TO instructions 4 Connection with Programmable controller 6 Allocation of buffer memory BFM 1 The FX2N 2AD and main unit are
8. calcurated and the result is stored in D113 D112 A D input data of CH1 D100 A D input data of CH2 D102 Sampling frequency D118 Agreement flag of sampling frequency and average frequency M133 Average value of CH1 D111 D110 Average value of CH2 D113 D112 1 The above program example has an average sampling frequency of 20 Make the average frequency within the range of 2 to 262143 1 Confirm whether the input wiring of FX2N 2AD and the connection of the extension cable is correctly done 2 Confirm whether the 4 Connection with programmable controller condition is satisfied 3 When shipped from the factory the input characteristic is adjusted to 0 to 10V DC If a different input characteristic is desired please adjust as required When the input characteristic is adjusted the input characteristics of CH1 and CH2 are changed 4 The coexistence use for the current and voltage input cannot be done with two channels 10 Error check Confirm the following items when it seems that the FX2n 2AD does not operate normally 1 Confirm the state of POWER LED Lit The extension cable is correctly connected Turn off or blinks Confirm the proper connection of the extension cable 2 Confirm the external wiring per section 3 Wiring 3 Confirm whether the load resistance of the connected equipment corresponds to the specification of the FX2n 2AD 4 Confirm the Voltage and Current input values with a vol
9. ign these numbers only once A D input data CH2 D101 Replace with auxiliary relay M100 to M115 Assign these numbers only once Processing time 2 5ms 1 channel Time from turning on X000 and X001 to storage of analog to digital conversion value in data register of main unit 1 Change the circuit of 1 as follows when using an FXon PLC FROM KO KO K4M100 K2 e Reading of digital value MOV K2M116 K2M108 The higher 4 bits are synthesized to the lower 8 bits 8 2 Connection to FX2n V3 00 or later or FX2Nc V3 00 or later Series PLC Please use FNC 176 RD3A Refer to FX Series Programming Manual II 8 3 Example of programming making average value data Add the undermentioned program after 8 1 Example of programming analog input and use the average value data when you can not read a stable digital value M8002 0 DMOV KO D114 H M133 DMOV KO D116 H DMOV KO D118 H gt a a Initialization of data MOV KO D101 H MOV KO D103 H M8000 39 F DINC D118 Hb b Count of sampling frequency DADD D114 D100 D114 c c Total of input data of CH1 DADD D116 D102 D116 Hd d Total of input data of CH2 M133 DCMP D118 K20 1 M132 He e Comparison of sampling frequencies 4 DDIV D114 D118 D110 K20 is an average frequency f The average value of CH1 is calcurated DDIV D116 D118 D112 g and the result is stored in D111 D110 9 The average value of CH2 is
10. increases if the volume is turned clockwise FX2N 4DA and FX2N 2DA can be used instead of the voltage and current generator 7 1 1 Adjustment of gain The gain value can be set to an arbitrary digital value However using the maximum 12bit resolution provides the user with a digital range of 0 to 4000 Voltage input pu Voltage input characteristic 0 to 10V characteristic 0 to 5V Current input characteristic 4 to 20mA At shipment A000 ae 4000 AOOO a 8 g g gt z g E D a a a 0 10V 0 5V 0 4mA 20mA SS Analog value Analog value Analog value 7 1 2 Adjustment of offset The offset value can be set to an arbitrary digital value However it is advisable to set the analog value when the digital value is set as following Current input Voltage input irda characteristic 4 to 20mA pu Voltage input characteristic 0 to 10V characteristic 0 to 5V At shipment 3 E 3 S i EORR S i bayen S E i E s D D a i a a A IREA 0 100mV 0 100mV 0 4mA 4 1 wee Analog value Analog value Analog value For instance when a digital range of 0 to 4000 is used with the analog range of 0 to 10V a digital value of 40 is equal to an analog input of 100mV 40 x 10V 4000 digital points 1 The offset and gain adjustments for CH1 and CH2 are accomplished at the same time When the offset and gain values of one channel are adjusted the other channel is automatically adjusted 2
11. ntal specification Item Content 2 External Dimensions and Parts Dimensions mm inches M3 0 12 terminal screws Extension 2 sk DIN rail Ea Zi mounting Ea Z slot 4 H 8 35mm 1 38 z zjo Sen 2 Mounting Fi AID holes 2holes 4 5 _ OFFSET 0 18 dia 0 H orsel o volume GAIN H AID GAIN 7 volume Mass Weight 0 2kg 0 44lbs Accessories Special Function block number label 4 0 16 43 1 69 3 Wiring Voltage input 0 10V DC VINO cE ARRA 2509 l gt e fino i COMO te KG 165Ka Current input 4 20mA 37 3KQ VINO z500 M 4 INO Wy sisis OMO ies 165KQ aec i PLC FX2n 2AD eres Pah ens 7 Channel number enter O Extension cable 1 The FXan 2AD cannot have 1 channel as an analog voltage input and one channel as current input because both channels use the same offset and gain values For current input please short circuit VIN and IIN as shown in the diagram 2 Connect a 0 1 to 0 47 uF 25V DC capacitor with the position of 2 when there is voltage ripple in the voltage input or there will be a lot of noise Dielectric withstand 500V AC 1min Between all terminals and case voltage
12. tage and current generator Confirm the analog to digital conversion from the input characteristic 5 Readjust the offset and gain by 7 Adjustment of offset and gain when the analog to digital conversion is not suitable for the input characteristic The input characteristic when shipped from the factory is 0 to 10V DC Guidelines for the safety of the user and protection of the FX2N 2AD SPECIAL FUNCTION BLOCK This manual has been written to be used by trained and competent personnel This is defined by the European directives for machinery low voltage and EMC If in doubt at any stage during the installation of the FX2N 2AD always consult a professional electrical engineer who is qualified and trained to the local and national standards If in doubt about the operation or use of the FX2N 2AD please consult the nearest Mitsubishi Electric distributor Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage that may arise as a result of the installation or use of this equipment All examples and diagrams shown in this manual are intended only as an aid to understanding the text not to guarantee operation Mitsubishi Electric will accept no responsibility for actual use of the product based on these illustrative examples Owing to the very great variety in possible application of this equipment you must satisfy yourself as to its suitability for your specific application
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