fx-2ad-pt user manual
Contents
1. 057 000 027 030 037 030 047 4 BUFFER MEMORY ASSIGNMENT The FX 2AD PT analog input unit transfers data with the programmable controller through its buffer memory 16 bit 32 point RAM E Number of samples for averaging CH1 1 to 4096 id Default 8 2 Number of samples for averaging CH2 1 to 4096 Default 8 CH1 Averaged temperature in 0 1 C units CH2 Averaged temperature 0 1 C units CH1 temperature present value in 0 1 C units 10 CH2 temperature present value in 0 1 C units 13 CH1 Averaged temperature in 0 1 F units CH2 temperature 0 1 F units 1 temperature present value 0 1 F units Cannot be used Error status see page 10 30 Identification code K2020 see page 11 Cannot be used In BFMs buffer memory marked with an data be biet from the programmable controller using the TO com mand BFMs 0 3 4 7 8 11 12 15 16 19 to 28 and 31 can not be used For BFMs without the mark data can be read to the programmable controller using the FROM command 4 BUFFER MEMORY ASSIGNMENT 1 BFMs 9 10 and 17 18 store the current value of the input data This value is in units of 0 1 C or 0 1 F but the resolution is only 0 2 C or 0 36 F 2 A number of recently converted readings are averaged to give a smooth read out and the aver aged data is stored in BFMs 52. 100 C to 600 C 1000 to 6000 FAHRENHEIT Analog input signal Current to sensor Compensated range 148 F to 1112 F 1480 to 11120 Digital output 12 bit conversion stored in 16 bit 2 s complement form Minimum resolvable temp 0 2 C 0 36 F Overall accuracy 1 full scale compensated range Conversion speed 15 ms for 2 channels isolation Photo coupler isolation between analog and digital circuits DC DC converter isolation of power from the base unit No isolation between inputs Power consumption DC 24V 10 50mA Occupation 8 points are occupied in the software i e the base unit image table They may be re garded as either inputs or outputs Power consumption from the base unit is 30mA 2 CONFIGURATION AND SPECIFICATIONS 6000 1120 5 Conversion Characteristics Digital d output output 100 148 2 1 1000 Temp input C 600 42 4 1480 T emp input F 1112 Class 3 Grounding 100Q or less FX 2DA PT Analog 1 The cable of the PT 100 sensor or a twisted shielded cable should be used for the analog input cable This analog input cable should be wired separately from power lines or any other li
3. D3 2 transferred to special m m TO K2 D2 K2 block No 0 BFM 2 1 X11 e m1 m2 n The same as above eps y Transfer destination head address T C D KnX KnY KnM KnS K or H can be specified This argument can be used with an index register Note eWhen X10 or X11 is OFF transfer is disabled 14 8 REFERENCE 1 System Block Diagram Programmabie Controller Cornmand information write and data status read FX series DC 24V Power Source 15 Analog Inputs FERA s dc putt e uh t cuc ADAE ae m Lon i 4 CH1 1 1 lt CH2 Multiplexer 4 i i 15V 1 LSV i te 4 24V 1 A 1 L ull Revisions EDITION DATE MANUAL NUMBER REVISION Jun 1991 JY992D28501A Apr 1992 Jan 1993 JY992D28501B JY992D28501C P 8 BFM number 3 4 7 8 11 12 15 and 16 are added 11 gt 19 In Table 3 gt 5 4 6 5 gt 9 6 gt 10 7 gt 13 8 gt 14 9 17 10 gt 18 11 gt 19 9 7 8 gt 13 14 TEXT Pages 1 3 7 8 13 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 un derstanding
4. 6 and 13 14 3 Number of samples to be averaged are assigned in BFMs 1 and 2 Only the range 1 to 4096 is valid Values outside this range are ignored and the default value of 8 is used 5 STATUS INFORMATION Status information Buffer Memory BFM 29 ON When any of b1 to b4 is ON bO Error A D conversion is stopped No error for the error channel b1 Not used b2 Power source abnormal DC 24V power supply failure Power supply normal A D converter or other hardware failure Incorrect installation b4 Program error or FROM TO command misused BFM No error data error b5 to b9 Not used Not used Not used Digital output analog input value is out side the specified range Averaging is 4097 or more or 0 or less Averaging is normal default of 8 will be used between 1 and 4096 b12 to 15 Not used Not used Not used b3 Hardware error Hardware normal b10 Digital range error Digital output value is normal 511 Averaging error 10 5 STATUS INFORMATION 1 Identification Code Buffer Memory BFM 30 The identification code number for a Special Block is read from buffer memory BFM 30 using the FROM command This number for the FX 2AD PT unit is K2020 The programmable controller can use this facility in its program to identify the special block before commencing data transfer from and to the special block 11 6 OPERATIO
5. 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 applications of this equipment you must satisfy yourself as to its suitability for your specific application 4 MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE MITSUBISH DENK BLDG MARUNOUCH TOKYO 100 TELEX J24532 CABLE MELCO TOKYO HIMEJI WORKS 840 CHIYODA JAPAN JY992D28501C Effective JAN 1993 eee 2 Specifications are subject to change without notice
6. ADVANCED AND EVER ADVANCING MITSUBISHI ELECTRIC s MITSUBISHI PROGRAMMABLE CONTROLLERS _FX 2AD PT JSER S MANUAL Foreword e This manual provides technical information on the use of the FX 2AD PT Analog Input Block in connection with the FX programmable controller e Users should ensure that the details of this man ual are studied and understood before attempt ing to install or use these units CONTENTS 1 on O fF M INTRODUCTION CONFIGURATION AND SPECIFICATIONS WIRING BUFFER MEMORY ASSIGNMENT STATUS INFORMATION OPERATION PROCEDURE FROM TO COMMANDS REFERENCE 10 12 14 15 1 INTRODUCTION 1 Introduction The FX 2AD PT analog input block amplifies the input from two platinum temperature sensors PT 100 3 wire 10022 converts the data into a 12 bit digital reading and transfers the results to an FX series programmable controller Opti cal coupling is used to ensure that voltage surges do not damage other parts of your equipment 2 Compatible Programmable Controllers The FROM TO instructions are used for transfer ring data to from the programmable controller Hence versions 2 0 or subsequent versions of the FX series programmable controllers those with serial no of 13XXXX or larger are required 3 Unit Specifications The FX 2AD PT occupies 8 l O s but does affect the addressing of input and output re lays For the purpose
7. N PROCEDURE Example Program In the program shown below the FX 2AD PT block occupies the position of special block number 2 that is the third closest block to the programmable controller The averaging amount is four The av eraged values in degrees of input channels CH1 and 2 are stored respectively in data registers DO and D1 Initialization pulse RUN monitor M1 FNC 78 FROM FNG 30 CMP FNC 78 FROM or M8000 Kz Special BFM Destina Block number tion 2 12 No of words Block No 2 BFM 30 gt D2 Identification code When K2020 D2 1 i e When identification code is K2020 M1 ON Block No 2 BFM 29 gt K4M10 Transfer the error status to M25 to M10 When error is found M10 ON Error found K4 gt BFM 1 K4 gt BFM 2 Sampling time is changed to four on both CH1 and CH2 BFM 5 00 BFM 60 gt D1 Transfer the averaged temperature value in C to the data registers 6 OPERATION PROCEDURE 1 Standard Operation 1 Check that the analog input cable power line and extension cable for the FX 2AD PT are all properly connected N 5v 30mA is supplied from the base or ex tension units for the FX 2AD PT Check that there is no power overload caused by this and other special blocks When DC 24V power is supplied from the base and extension units of t
8. he programma ble controller check that the current is below the allowable limit this varies ac cording to the number of extension blocks connected gt Put the programmable controller into RUN mode 2 Troubleshooting The following LEDs on the front cover of the FX 2AD PT can help you troubleshoot the unit a The POWER LED This lights up when 5V power is supplied from the programmable controller If it is not lit check to see if the extension cable is properly connected b The 24V LED This lights up when DC 24V power is supplied to the FX 2AD PT If it is not lit even if DC 24V 10 is being supplied failure of the FX 2AD PT unit may have occured c The A D LED This lights up when A D conversion is proceed ing normally If any of b2 to b4 of buffer mem ory 29 error status is ON this LED turns OFF 7 FROM TO COMMANDS 1 FROM TO Commands Explained m1 m2 D n3 BFM 6 5 in special block FNC 78 No 2 are transferred to D1 e X10 Special function unit or block number These are numbered consecu tively from KO to K7 starting from the one closest to the base unit m2 Buffer memory head address m2 KO to K31 e D Transfer destination head address T C D KnM KnY KnS V Z can be specified This argument can be used with an index register The number of words to be transferred n K1 to K32 79 TO
9. nes which may induce noise The three wire method improves the accuracy of the sensors by compensating voltage drops 2 If there is electrical noise connect the frame ground terminal FG with the ground termi nal 3 Connect the ground terminal on the FX 2AD PT unit with the grounded terminal on the base unit Use class 3 grounding on the base unit if grounding is possible 4 Either an external or the 24V built in supply in the programmable controller may be used 3 WIRING 1 Using crimp terminations Less than 6 8mm 0 27 in T Scu Use M3 5 0 14 in e Secure the termination using a tightening torque of be d tween 5 and 8 kg cm ess than 6 8mm 0 27 A e Use crimp terminations of the type indicated on the left e Wire only to the module terminals discussed in this manual Leave all others vacant 3 WIRING 2 Use with other special blocks Other special units or blocks that use FROM TO commands such as analog input blocks analog out put blocks and high speed counter blocks can be directly connected to the base unit of the FX pro grammable controller or to the right side of other extension blocks or units Each special block is consecutively numbered from 0 to 7 beginning from the one closest to the base unit A maximum of eight special blocks can be connected FX 2AD PT Special Special Special FX 48MR block 0 block 1 FX 32ER block 2 X000 X027 FX 8EX 040
10. s of power consumption the FX 2AD PT unit draws 30mA from the 5v rail of the base unit 4 Measuring Units The FX 2AD PT unit measures temperature in Centigrade C to a resolution of 0 2 C or in Fahrenheit F to a resolution of 0 36 F 5 Status Information information concerning the working status of the FX 2AD PT including error messages can be sent to the programmable controller 6 Suitable Sensors 3 wire 100 2 PT100 platinum temperature sen sors with the following specification are usable 3850 PPM C JIS C1604 1989 DIN 43760 2 CONFIGURATION AND SPECIFICATIONS 1 Configuration and Specifications e Weight Approx 0 5 kg 1 1 Ibs Accessories Self adhesive labels for special block number identification M3 5 0 14 terminal screws _ Mounting holes 5 5mm 0 27 dia 35mm 1 38 DIN 125 140 rail mounting slot 4 92 5 51 Extension cable and connector 10 0 39 nu 95 3 74 it 63 2 48 5 73 2875 2 CONFIGURATION AND SPECIFICATIONS 2 Performance Specifications The environmental specifications for the FX 2AD PT are the same as those for your base unit CENTIGRADE Both C and F readings are available by reading the appropriate buffer memory area Platinum temperature PT100 sensors 1009 3 wire 2 channel CH1 CH2 3850PPM C DIN 43760 JIS C1604 1989 1 sensor 1002 100
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