Home

RTD/Resistance Input Module - RS Components International

1. Channel Status A Side Label LEDs Green INPUT al CHANNEL H Door Label a o A e e B STATUS L1 L 3 25 B m SI Z2 mo Module Status MODULE STATUS Fels 35 i EPX LED Green ad RTD resistance ag y EA 2 ms E 9 8 ad 69 SHIELD 5 g 93 CHLO SHIELD 3 25 Removable RD cus EE Terminal Block cto FID rt iz 258 8 SENSE CHL1 8g E G9 CHLO SENSE 2 aa O RETRN CHL1 i cs RETRI E 2 SHIELD L 4 S G2 e cuo EDD eds CHL2 26 amp eee GO CHL2 SENSE F 3 z G G9 RETRN CHL3 4 EFE Cable Tie Slot ET a REPE able Tie Slots T Hra 8 lsg e s 2 8 o Self Locking Tabs Hardware Features Hardware Function Channel Status LED Indicators Displays operating and fault status of channels 0 1 2 and 3 Module Status LED Displays module operating and fault status Side Label Nameplate Provides module information Removable Terminal Block Provides physical connection to input devices Door Label Permits easy terminal identification Cable Tie Slots Secures wiring from module Self Locking Tabs Secures module in chassis slot Product Data SLC 500 RTD resistance Input Module Module Operation At module powerup a series of internal diagnostic tests is performed If any diagnostic test fails the module enters the module error state If al
2. data word A 16 bit integer that represents the value of the analog input channel The channel data word is valid only when the channel is enabled and there are no channel errors When the channel is disabled the channel data word is cleared 0 dB decibel A logarithmic measure of the ratio of two signal levels digital filter A low pass noise filter incorporated into the A D converter In addition the digital filter provides high rejection notches at frequencies that are integral multiples of the filter cut off frequency The notches are used for rejecting AC power line noise and higher frequency noise effective resolution The amount of jitter data variation that typically Occurs in the data word due to the influence of the internal electrical noise in the module excitation current A user selectable current 0 5 mA and 2 0 mA that the module sends through the RTD or resistance device to produce an analog signal which the NR4 can process and convert to temperature or to ohms respectively filter frequency The user selectable first notch frequency for the A D converter s digital filter The digital filter provides AC power line noise rejection when the first notch is at 10 Hz or at the power line frequency LSB Least Significant Bit Refers to a data increment defined as the full scale range divided by the resolution The LSB bit that represents the smallest value within a string of bits normal mod
3. 2 per DIN standard G Actual value at 0 C is 9 042 per SAMA standard RC21 4 1966 Product Data SLC 500 RTD resistance Input Module Effective Resolution The effective resolution for an input channel depends upon the filter frequency selected for that channel The table below provides the effective resolution for the various input types and filter frequencies iiit Filter Frequency npu e puta 10 Hz 50 Hz 60 Hz 250 Hz 10 1 C 10 2 C 40 2 C 0 4 C 10062 RERTD S65 E0 2 F 04 F 0 4 F 07 F 10 1 C 10 2 C 40 2 C 0 4 C 2009 EERTD 3890 0 2 F 04 F 0 4 F CE 0 7 F 10 1 C 10 2 C 40 2 C 0 4 C a 8830 4 0 2 F 04 04 F 07 F 10 1 C 10 2 C 40 2 C 0 4 C 100002 PLRTD 3850 Eio2eF 04 F E04F E07 F 10 1 C 10 2 C 40 2 C 10 3 C 10062 Rt RTD 39160 0 2 F 0 4 F 0 4 F 0 5 F 10 1 C 10 2 C 40 2 C 10 3 C 20082 PERTD 39160 gp 4er 04 F 05 F 10 1 C 10 2 C 0 2 C 10 3 C 50082 PERTD 39160 gm ga 04 F 0 5 F 10 1 C 40 2 C 0 2 C 10 3 C 1000 PLRTD 3916 gop ose 04 E05 F 10 2 C 10 3 C 0 3 C 0 4 C 1082 Cu RTD 4260 gg 05 4057 0 7 F 10 1 C 10 1 C 0 1 C 0 2 C 1202NIRTD 6180 105 oF 02 F 02 F 0 4 F a 1
4. Resolution Repeatability 150 0 Q to 150 Q 0 Q to 150 Q 0 01Q 0 040 ES 0 014 Q C Ji 5009 0 Q to 500 Q 0 Q to 500 Q 0 5Q E 0 025 Q F 0 1 2 0 2Q Resistance ES 0 029 Q C 4L 10002 0 Q to 1000 Q 0 Q to 1000 Q 1 02 CE 0 052 Q F 0 1 2 0 2 EN 0 043 Q C mie 300002 0 Q to 3000 Q 0 Q to 1900 Q 1 5Q CE 0 077 Q F 0 1 2 0 2 D The accuracy for 150Q is dependant on the excitation current 0 2Q at 0 5 mA 0 150 at 2 0 mA The temperature drift for 150 is dependant on the excitation current 0 0062 C at 0 5 mA 0 0040 at 2 0 mA G The accuracy values assume that the module was calibrated within the specified temperature range of 0 C to 60 C 32 F to 140 F Module Wiring Product Data SLC 500 RTD resistance Input Module The RTD input module contains an 18 position removable terminal block Terminal Block Terminal Block Spare Part Catalog Number 1746 RT25G Shield Channel 0 RTD Channel 0 Sense Channel 0 Return Shield Channel 2 RTD Channel 2 Sense Channel 2 Return Shield Release Screw 4 gel Release Screw Shield Channel 1 RTD Channel 1 Sense Channel 1 Return Shield Channel 3 RTD Channel 3 Sense Channel 3 Return Shield Product Data SLC 500 RTD resistance Input Module Module Addressing The following memory map shows
5. 30000 0 to 3000 0 to 16383 32768 to 32767 2 0 mA 0 to 19000 0 to 1900 0 to 16383 32768 to 32767 When ohms are selected the temperature units selection bit 8 is ignored 13 Product Data SLC 500 RTD resistance Input Module Channel Data Word Resolution for RTDs Data Format Bits 4 and 5 RTD Input Type Engineering Units x1 Engineering Units x 10 Scaled for PID DS oG OF oG oF oG oF oG OF 100 Q Platinum 385 0 1 C step 0 1 F step 1 C step 1 F step 0 0641 C step 0 1154 F step 0 0160 C step 0 0288 F step 200 2 Platinum 385 0 1 C step 0 1 F step 1 C step 1 F step 0 0641 C step 0 1154 F step 0 0160 C step 0 0288 F step 500 2 Platinum 385 0 1 C step 0 1 F step 1 C step 1 F step 0 0641 C step 0 1154 F step 0 0160 C step 0 0288 F step 1000 Q Platinum 385 0 1 C step 0 1 F step 1 C step 1 F step 0 0641 C step 0 1154 F step 0 0160 C step 0 0288 F step 100 Q Platinum 3916 0 1 9 C step 0 1 F step 1 C step 1 F step 0 0507 C step 0 0912 F step 0 0127 C step 0 0228 F step 200 Q Platinum 3916 0 1 C step 0 1 F step 1 C step 1 F step 0 0507 C step 0 0912 F step 0 0127 C step 0 0228 F step 500 Q Platinum 3916 0 1 C step 0 1 F step 1 C step 1 F step 0 0507 C step 0 0912 F step 0 0127 C step 0 0228 F step 1000 Q Pl
6. C or F and 0 1 C or 0 1 F Resistance Scale Selectable 1Q or 0 1Q for all resistance ranges or 0 1 or 0 01 Q for 150 Q potentiometer Input Step Response See channel step response page 22 Input Resolution and Repeatability See RTD and resistance device compatibility tables on pages 6 and 8 Display Resolution See Channel Data Word Resolution tables on page 14 Module Update Time See Chapter 4 Update Time page 22 Channel Turn On Time Reconfiguration Time Requires up to one module update time plus one of the following e 250 Hz Filter 388 milliseconds e 60 Hz Filter 1 300 milliseconds e 50 Hz Filter 1 540 milliseconds e 10 Hz Filter 7 300 milliseconds Channel Turn Off Time Requires up to one module update time RTD Excitation Current Two current values are user selectable 0 5 mA Recommended for use with higher resistance ranges for both RTDs and direct resistance inputs 100002 RTDs and 30002 resistance input Refer to RTD manufacturer for recommendations Cannot use for 10Q Copper RTD 2 0 mA Must use for 10 Copper RTD Recommended to use for all other RTD and direct resistance inputs except 100002 RTDs and 30002 resistance input ranges are limited Refer to RTD manufacturer for recommendations Refer to the current recommendations of the RTD manufacturer to determine the best current source for your application Q Actual value at 0 C is 100
7. in ohms tenths of an ohm and one hundredth of an ohm In addition to engineering units you can format conversion of the input data to proportional counts or scaled for PID Product Data SLC 500 RTD resistance Input Module Features and Benefits Provides a choice of four filter frequencies permitting you to select input noise filtering appropriate to the application and surrounding environment Either or both 50Hz and 60Hz noise can be filtered from the input signal for greater noise rejection and resolution For applications where system response speed is critical minimum filtering 250 Hz can be selected to reduce the time it takes a step change at the input to be made available to the SLC 500 controller Requires no user calibration Each of the module s channels undergoes a calibration cycle at power up on channel configuration or on your command to compensate for module component drift This enhances module accuracy and saves valuable service time and money Provides fault diagnostics to check for open circuits short circuits or out of range values then indicates operational problems on status LEDs Channel status LEDs and diagnostic bits signal you if input channel data is out of range or if an open circuit or short circuit condition is present Channel configuration validity is also checked In addition a module status LED differentiates recoverable channel errors from more serious module related problems saving you trouble
8. module slot except slot 0 A D Conversion Method Sigma Delta Modulation Input Filtering E filter with programmable notch filter Common Mode Rejection between inputs gt 150 dB at 50 Hz 10 Hz and 50 Hz filter frequencies and chassis ground 150 dB at 60 Hz 10 Hz and 60 Hz filter frequencies Greater than 100 dB at 50 Hz 10 Hz 50 Hz filter Normal Mode Rejection between input frequencies and input Greater than 100 dB at 60 Hz 10 Hz 60 Hz filter frequencies Maximum common mode voltage 1 volt Volts 5VDC Maximum allowed permanent overload Current 5mA 2 62 Hz at 10 Hz filter frequency Input Filter Cut Off Frequencies 13 1 Hz at 50 Hz filter frequency 15 72 Hz at 60 Hz filter frequency 65 5 Hz at 250 Hz filter frequency Module autocalibrates when a channel is enabled or Calibration when a change is made to its input type filter frequency or excitation current 500 VDC continuous between inputs and chassis Isolation optical ground and between inputs and backplane Isolation Between Inputs None Do not apply a voltage or current to the module Physical Specifications 5 green status indicators one for each of 4 channels and one PED indicator for module status Module ID Code 3513 Maximum Termination Wire Size Two 14 AWG wire per terminal 25 ohms maximum impedance for 3 wire RTD configuration Maximum Cable Impedance see Cable Specif
9. to 630 328 to 1166 0 to 16383 32768 to 32767 200 Q Platinum 3916 2000 to 6300 3280 to 11660 200 to 630 328 to 1166 0 to 16383 32768 to 32767 500 Q Platinum 3916 2000 to 6300 3280 to 11660 200 to 630 328 to 1166 0 to 16383 32768 to 32767 120 Q Nickel 672 800 to 2600 1120 to 5000 80 to 260 112 to 500 0 to 16383 32768 to 32767 120 Q Nickel 618 1000 to 2600 1480 to 5000 100 to 260 148 to 500 0 to 16383 32768 to 32767 604 Q Nickel Iron 518 1000 to 2000 1480 to 3920 100 to 200 148 to 392 0 to 16383 32768 to 32767 Actual value at 0 C is 100 2 per DIN standard Data Format for 1000 Platinum RTD 385 Input Type Data Format Excitation Current Units x A Grasi sr conie 0 5 mA 2000 to 8500 3280 to 415620 200 to 850 328 to 1562 0 to 16383 32768 to 32767 2 0 mA 2000 to 2400 3280 to 4640 200 to 240 328 to 464 0 to 16383 32768 to 32767 12 Data Format for 1000 Platinum RTD 3916 Input Type Product Data SLC 500 RTD resistance Input Module Data Format Excitation Current Engineering Units x 1 Engineering Units x 10 g 9 9 g Scaled for PIp Proportional Counts 0 1 C 0 1 F 1 0 C 1 0 F Default 0 5 mA 2000 to 6300 3280 to 11660 200 to 630 328 to 1166 0 to 16383 32768 to 32767 2 0 mA 2000 to 2300 3280 to 44600 200t0 230 328 to 446 0 to 16383 32768 to 32767 Data Fo
10. you how the output and input image tables are defined for the RTD module Bit 15 Bit 0 Address sic e s Output Image Word5 O e 5 Address Input Image Jie Wordo feo Input Image Word2 e 2 Bit 15 Bit 0 Channel Configuration Output Image Once the module has been installed each channel on the module can be configured to establish the way the channel will operate You configure the channel by entering bit values into the configuration word using your programming software Channels 0 3 on the RTD module are configured by entering bit values into output words 0 3 respectively Output words 4 7 are used for scaling purposes Channel Data and Status Input Image Input words 0 3 data words hold the input data that represent the temperature value of RTD analog inputs or the resistance value of resistive inputs for channels 0 3 respectively This data word is valid only when the channel is enabled and there are no channel errors Input words 4 7 status words contain the status of channels 0 3 respectively The status bits for a particular channel reflect the configuration settings that you have entered into the output image configuration word for 10 Product Data SLC 500 RTD resistance Input Module that channel as well as providing information about the channel s operational state To receive valid status information the channel must be enabled and the channel must have processed any confi
11. 0 1 C 10 1 C 0 1 C 10 2 C 1209 Ni RTD 672 40 2 F 02 F 0 2 F 0 4 F 10 1 C 10 1 C 0 1 C 10 2 C 60492 NiFe RTD 518 gm ser 02 F 0 4 F 150 Resistance Input E 0 02 Q 0 04 Q 0 04 Q 10 08 Q 500 Resistance Input 10 1 Q 1 02 Q 10 2 Q 0 4 Q 1000 Resistance Input 10 2 Q 10 3 Q 0 3 Q 0 5 Q 3000 2 Resistance Input 10 2 Q 10 3 Q 1 0 3 Q 0 5 Q The digits following the RTD type represent the temperature coefficient of resistance which is defined as the resistance change per ohm per C For instance Platinum 385 refers to a platinum RTD with 0 00385 ohms ohm C or simply 0 00385 C Q Actual value at 0 C is 9 042Q per SAMA standard RC21 4 1966 G Actual value at 0 C is 100Q per DIN standard 21 Product Data SLC 500 RTD resistance Input Module Channel Step Response The channel filter frequency determines the channel s step response The step response is the time required for the analog input signal to reach 10096 of its expected final value This means that if an input signal changes faster than the channel step response a portion of that signal will be attenuated by the channel filter The following table shows the available filter frequencies associated minimum normal mode rejection NMR cut off frequency and step response for each filter frequency Filter Frequency
12. 50HzNMR 60HzNMR ice Step Response 10 Hz 100 dB 100 dB 2 62 Hz 300 ms 50 Hz 100 dB 13 1 Hz 60 ms 60 Hz E 100 dB 15 72 Hz 50 ms 250 Hz 65 5 Hz 12 ms Update Time The RTD module channel update time is defined as the time required for the module to sample and convert scan the input signal of an enabled input channel and make the resulting data value available to the SLC processor for update Channel scanning always occurs starting with the lowest numbered channel and proceeding to the next highest numbered channel for example channel 0 channel 1 channel 2 channel 3 channel 0 channel 1 and so forth Channel scan time is a function of the filter frequency Filter Frequency xi AH 30ms 50 Hz 65 ms 60 Hz 55 ms 250 Hz 17 ms The module scan time is obtained by summing the channel scan time for each enabled channel For example if 3 channels are enabled and the 50 Hz filter is selected the module scan time is 3 xx 65 ms 195 ms The fastest module update time occurs when only one channel with a 250 Hz filter frequency is enabled Module Update Time z 17 ms NOTE With 3 channels enabled the module update time is 3 channels x 17 ms channel 51 ms The slowest module update time occurs when four channels each using a 10 Hz filter frequency are enabled Module Update Time 4 channels x 305 ms per channel 1220 ms 22 Allen Bradley Support Product Data SLC 500 RTD resistance
13. Australia e Austria e Bahrain e Belgium e Brazil e Bulgaria e Canada e Chile e China PRC e Colombia Costa Rica e Croatia e Cyprus e Czech Republic e Denmark e Ecuador e Egypt e El Salvador e Finland e France e Germany e Greece e Guatemala e Honduras Hong Kong e Hungary e Iceland e India e Indonesia Israel e Italy e Jamaica e Japan e Jordan e Korea e Kuwait e Lebanon e Malaysia e Mexico e New Zealand e Norway e Oman e Pakistan e Peru e Philippines e Poland Portugal e Puerto Rico e Qatar e Romania e Russia CIS e Saudi Arabia e Singapore e Slovakia e Slovenia e South Africa Republic e Spain e Switzerland e Taiwan e Thailand e The Netherlands e Turkey United Arab Emirates e United Kingdom e United States e Uruguay Venezuela e Yugoslavia World Headquarters Allen Bradley 1201 South Second Street Milwaukee WI 53204 USA Tel 1 414 382 2000 Fax 1 414 382 4444 Publication 1746 2 37 December 1994 Copyright 1994 Allen Bradley Company Inc Printed in USA
14. B ALLEN BRADLEY SLC 500 RTD Resistance Input Module Catalog Number 1746 NR4 Product Data The NR4 enhances the present temperature control capabilities of your SLC 500 system by providing the capability to interface with 12 different RTDs and 4 different direct resistance ranges RTDs are known for their accuracy repeatability linearity and long term stability The 1746 NR4 RTD sensor combination is easy to install and provides greater output ohms C or ohms F accuracy linearity and repeatability with temperature as compared to other methods of temperature measurement control Each NR4 channel accepts different types of RTD inputs for example platinum nickle copper and nickle iron and accepts resistance devices like potentiometers The module converts RTD input to temperature C F and converts resistance device input to ohms The NR4 module provides channel configuration flexibility that allows you to define the operational characteristics for each input channel on the module via your ladder logic programming There are no hardware DIP switches to set Each of the module s four channels is configured using your ladder program and may be dynamically reconfigured without handling the hardware The NR4 performs on board scaling to engineering units For example you can specify RTD or resistance device input temperature resolution in degrees or tenths of a degree Celsius or Fahrenheit resistance device resolution
15. C 0 014 C C E 11 F 0 9 F 0 031 F F 0 025 F F me 0 6 C 05 C 0 017 C C 0 014 C C E 11 F XE 0 9 F 0 031 F F 0 025 F F ne E10 CO E04 C 0 034 C C 0 011 C C 2 0 F 0 7 F 0 061 F F 0 020 F F m 1 0 C 04 C 0 034 C C 0 011 C C 2 0 F 07 F 0 061 F F 0 020 F F num 29 m 05 C 0 4 C 0 014 C C 0 011 C C 09 F 07 F 0 025 F F 0 020 F F nm 05 C E04 C 0 014 C C 0 011 C C XE 0 9 F 0 7 F 0 025 F F 0 020 F F Es O 17 o C Copper 426 10Q Not allowed d x i Not allowed zin pon 0 2 C 02 C 0 008 C C 0 008 C C Nickel TU DIU 12082 0 4 F CE 04 F CE 0 014 F F CE 0 014 F F 02 C 0 2 C 0 008 C C 0 008 C C AEE cee SEDES E 0 4 F 0 4 F 0 014 F F 0 014 F F 03 C 0 3 C 0 010 C C 0 010 C C Nickel Iron da T9 0 60462 2E 0 5 F 0 5 F E 0 018 F F CE 0 018 F F The digits following the RTD type represent the temperature coefficient of resistance o which is defined as the resistance change per ohm per C For instance Platinum 385 refers to a platinum RTD with 0 00385 ohms ohm C or simply 0 00385 C The accuracy values assume that the module was calibrated within the spe
16. Input Module In today s competitive environment when you buy any product you expect that product to meet your needs You also expect the manufacturer of that product to back it up with the kind of customer service and product support that will prove you made a wise purchase As the people who design engineer and manufacture your Industrial Automation Control equipment Allen Bradley has a vested interest in your complete satisfaction with our products and services Allen Bradley offers support services worldwide with over 75 Sales Support Offices 512 authorized Distributors and 260 authorized Systems Integrators located throughout the United States alone plus Allen Bradley representatives in every major country in the world Contact your local Allen Bradley representative for e sales and order support e product technical training warranty support support service agreements 23 ALLEN BRADLEY Allen Bradley has been helping its customers improve productivity and quality for 90 years A ROCKWELL INTERNATIONAL COMPANY A B designs manufactures and supports a broad range of control and automation products worldwide They include logic processors power and motion control devices man machine interfaces and sensors Allen Bradley is a subsidiary of Rockwell International one of the world s leading technology companies C IQ With major offices worldwide mammam Algeria e Argentina e
17. atinum 3916 0 1 C step 0 1 F step 1 C step 1 F step 0 0507 C step 0 0912 F step 0 0127 C step 0 0228 F step 10 Q Copper 426 0 1 C step 0 1 F step 1 C step 1 F step 0 0220 C step 0 0396 F step 0 0051 C step 0 0099 F step 120 Q Nickel 6189 0 1 C step 0 1 F step 1 C step 1 F step 0 0220 C step 0 0396 F step 0 0051 C step 0 0099 F step 120 Q Nickel 672 0 1 C step 0 1 F step 1 C step 1 F step 0 0208 C step 0 0374 F step 0 0052 C step 0 0093 F step 604 Q Nickel Iron 518 0 1 C step 0 1 F step 1 C step 1 F step 0 0183 C step 0 0330 F step 0 0046 C step 0 0082 F step When ohms are selected the temperature units selection bit 8 is ignored Analog input data is the same for either C or F selection Actual value at 0 C is 1002 per DIN standard Channel Data Word Resolution for 150 Resistance Input Type Resistance Input Type Data Format Bits 4 and 5 Engineering Units x 1 Engineering Units x 10 Scaled for PID Proportional Counts 1500 Default Ohms Ohms Ohms Ohms 0 010 step 0 1 Q step 0 00920 step 0 00230 step Channel Data Word Resolution for 50002 1000 2 and 3000 Resistance Input Types Data Format Bits 4 and 5 Resistance Input Type Engineering Units x 1 Engineering Units x 10 Scaled for PID Proportional Counts De
18. cified temperature range of 0 C to 60 C 32 F to 140 F Actual value at 0 C is 9 042 per SAMA standard RC21 4 1966 Actual value at 0 C is 100 per DIN standard To maximize the relatively small RTD signal only 2 mA excitation current is allowed Temperature drift specifications apply to a module that has not been calibrated Module accuracy using 100 2 or 200 2 platinum RTDs with 0 5 mA excitation current depends on the following criteria a Module accuracy is 0 6 C after you apply power to the module or perform an autocalibration at 25 C ambient with module operating temperature at 25 C b Module accuracy is 0 6 C AT x 0 034 C C after you apply power to the module or perform an autocalibration at 25 C ambient with the module operating temperature between 0 to 60 C where AT is the temperature difference between the actual operating temperature of the module and 25 C and 0 034 C C is the temperature drift shown in the table above for 100 2 or 200 2 platinum RTDs c Module accuracy is 1 0 C after you apply power to the module or perform an autocalibration at 60 C ambient with module operating temperature at 60 C Oo 6060066060 Product Data SLC 500 RTD resistance Input Module Resistance Input Specifications Resistance Range Resistance Range x Input Type 0 5 mA Excitation 2 0 mA Excitation Accuracy Temperature Drift
19. e rejection differential mode rejection A logarithmic measure in dB of a device s ability to reject noise signals between or among circuit signal conductors but not between equipment grounding conductor or signal reference structure and the signal conductors resolution The smallest detectable change in a measurement typically expressed in engineering units for example 0 1 C or as a number of bits For example a 12 bit system has 4 096 possible output states It can therefore measure 1 part in 4096 Product Data SLC 500 RTD resistance Input Module RTD Resistance Temperature Detector A temperature sensing element with 2 3 or 4 lead wires It uses the basic characteristic that electrical resistance of metals increases with temperature When a small current is applied to the RTD it creates a voltage that varies with temperature This voltage is processed and converted by the RTD module into a temperature value step response time This is the time required for the A D input signal to reach 700 of its expected final value given a large step change in the input signal Product Data SLC 500 RTD resistance Input Module Specifications Electrical Specifications Backplane Current Consumption 2 Ux a M vi Backplane Power Consumption 1 5W maximum 0 3 W 5 VDC 1 2 W 24 VDC External Power Supply Requirements None Number of Channels 4 backplane isolated I O Chassis Location Any I O
20. e which is defined as the resistance change per ohm per C International Electrotechnical Commission Standard 751 1983 German Standard DIN 43760 1980 and DIN 43760 1987 U S Standard D100 Scientific Apparatus Makers Association Standard RC21 4 1966 Japanese Industrial Standard JIS C1604 1981 Japanese Standard JIS C1604 1989 Minco Type NA Nickle and Minco Type FA Nickle Iron Actual value at 0 C is 9 042Q per SAMA standard RC21 4 1966 Actual value at 0 C is 100 per DIN standard Compatibility in a Fixed Expansion Chassis The 2 slot SLC 500 fixed I O expansion chassis supports only specific combinations of modules The table below summarizes compatibility Refer to the SLC 500 Family System Overview Publication Number 1747 2 30 or the RTD resistance Input Module User s Manual Publication Number 1746 6 7 for complete compatibility information Fixed Chassis Compatibility 2 The NR4 module can be used with The NR4 module cannot be used with this module and an External Power these modules Supply OW16 OB32 NO4I OV32 All combinations other than those listed above are valid Product Data SLC 500 RTD resistance Input Module Module Accuracy The tables on pages 6 and 7 list the RTD types the associated temperature ranges and RTD specifications The table on page 8 lists the resistance ranges for potentiometers and associated specifications RTD Temperature Ranges Resolution a
21. fault Ohms Ohms Ohms Ohms 500 2 0 10 step 10 step 0 03050 step 0 00762 step 100002 0 1Q step 10 step 0 06100 step 0 01530 step 30002 0 10 step 10 step 0 18310 step 0 0458 step 14 Module Diagnostics Terms and Abbreviations Product Data SLC 500 RTD resistance Input Module The RTD module performs operations at two levels e module level operations e channel level operations Module level operations include functions such as power up configuration and communication with the SLC processor Channel level operations describe channel related functions such as data conversion and out of range or open circuit or short circuit RTDs only detection Internal diagnostics are performed at both levels of operation and any error conditions detected are immediately indicated by the module s LEDs Power Up Diagnostics At module powerup a series of internal diagnostic tests is performed If any diagnostic test fails the module enters the module error state If all tests pass the module initializes its hardware and software environment and turns on the module status LED During powerup the RTD module does not communicate with the processor Channel Diagnostics When a channel is enabled bit 11 1 a diagnostic check is performed to see that the channel has been properly configured In addition the channel is tested for out of range open circuit and short circuit faults on every scan A failure
22. fields represent various channel characteristics Each of these characteristics can be modified from its power up default setting at any time while the module is operating Specific bit settings are discussed in the RTD resistance Input Module User s Manual Publication Number 1746 6 7 11 Product Data SLC 500 RTD resistance Input Module The tables on pages 12 13 and 14 define the data formats and the resolutions that can be represented for each input type In these tables Engineering Units provide the input value directly in C F or ohms Scaled for PID provides a data format directly compatible with the SLC 5 02 SLC 5 03 and SLC 5 04 PID algorithm Also requires manual conversion to engineering units Proportional Counts provide the greatest possible resolution but require manual conversion to engineering units in your control program Data Formats for RTD Temperature Ranges Using 0 5 and 2 0 mA Excitation Current Data Format RTD Input Type ae Units z pa Scaled for PID fia com ioi 100 Q Platinum 385 2000 to 8500 3280 to 15620 200 to 850 328 to 1562 0 to 16383 32768 to 32767 200 Q Platinum 385 2000 to 8500 3280 to 15620 200 to 850 328 to 1562 0 to 16383 32768 to 32767 500 Q Platinum 385 2000 to 8500 3280 to 15620 200 to 850 328 to 1562 0 to 16383 32768 to 32767 100 Q Platinum 3916 2000 to 6300 3280 to 11660 200
23. guration changes that may have been made to the configuration word You can configure the following parameters Parameter Select one of these 100Q Platinum 385 2002 Platinum 385 50092 Platinum RTD 385 100 Platinum RTD 3916 2002 Platinum RTD 3916 50002 Platinum RTD 3916 1209 Nickel RTD 618 120Q Nickel RTD 672 6042 Nickel Iron RTD 518 1000 Platinum RTD 385 100022 Platinum RTD 3916 10 2 Copper RTD 426 Resistance Device Type 150 500 1000 or 3000 ohm 1 0 degree 0 1 degrees 1 ohm 0 1 ohms 0 01 ohms for 150 ohm range only or proportional counts RTD Type Data Format Open Short Circuit Zero upscale or downscale Temperature Units C or F Filter Frequency 10 Hz 50 Hz 60 Hz or 250 Hz RTD Excitation Current 0 5 mA or 2 0 mA Default scaled for PID default proportional counts or user defined proportional counts Scaling The digits in parenthesis following the RTD type represent the temperature coefficient of resistance that is defined as the resistance change per ohm per C For instance Platinum 385 refers to a platinum RTD with o 0 00385 ohms ohm C or simply 0 00385 C Q Actual value at 0 C is 100Q per DIN standard Actual value at 0 C is 9 042 per SAMA standard RC21 4 1966 The format of the data that the RTD module sends back to the SLC processor depends on how the bits are set in the configuration word Specific bit
24. ications Removable Allen Bradley spare part Catalog Number Terminal Block 1746 RT25G 18 Environmental Specifications Operating Temperature Product Data SLC 500 RTD resistance Input Module 0 C to 60 C 32 F to 140 F Storage Temperature 40 C to 85 C 104 F to 185 F Relative Humidity 5 to 95 without condensation Certification UL listed CSA approved Hazardous Environment m 3 Classification Class I Division 2 Hazardous Environment Cable Specifications Description Belden 9501 Belden 9533 Belden 83503 For 3 wire RTDs and For 3 wire RTDs and When used For 2 wire RTDs and potentiometers Short runs less potentiometers Long runs greater i potentiometers than 100 feet and normal humidity than 100 feet or high humidity levels levels Conductors 2 24 AWG tinned copper 7x 32 3 24 AWG tinned copper 7x 32 3 24 AWG tinned copper 7x 32 Shield Beldfoil aluminum polyester shield Beldfoil aluminum polyester shield Beldfoil aluminum polyester shield with copper drain wire with copper drain wire with tinned braid shield Insulation PVC S R PVC Teflon Jacket Chrome PVC Chrome PVC Red teflon Agency Approvals NEC Type CM NEC Type CM NEC Art 800 Type CMP Temperature Rating 80 C 80 C 200 C 19 Product Data SLC 500 RTD resistance Input Module 20 Input Specifications RTD Type Temperature Range Inde
25. l tests pass the module initializes its hardware and software environment and turns on the module status LED During powerup the RTD module does not communicate with the processor After power up checks are complete the RTD module waits for valid channel configuration data from your SLC ladder logic program channel status LEDs off After configuration data is written to one or more channel configuration words and the respective channel enable bits are set by the user control program the channel status LEDs go on and the module continuously converts the RTD or resistance input to a value within the range you selected for the enabled channels The module is now operating in its normal state Channel Data Words p Channel Status Words 1746 NR4 gt RTD Resistance Input Analog Signals Module SLC 500 Processor Scaling Limit Words Channel Configuration Words Chassis Backplane Each time a channel is read by the module that data value is tested for an under range over range open circuit or short circuit condition If such a condition is detected an error bit is set in the channel status word and the appropriate channel LED blinks The SLC processor reads the converted RTD or resistance data from the module at the end of the program scan or when commanded by the ladder program The processor and RTD module determine that the backplane data transfer was made witho
26. nd Repeatability Temp Range Temp Range ze RTD Type 0 5 mA Excitation 2 0 mA Excitation Resolution Repeatability inda 200 C to 850 C 200 Cto 850 C 01 C 02 C 328 F to 1562 F 328 F to 1562 F 02 F 404 mm 200 C to 850 C 200 Cto 850 C 0 1 C 0 2 C l 328 F to 1562 F 328 F to 41562 F 0 2 F 04 F Platinum 385 z d z 5 end 200 C to 850 C 200 Cto 850 C 0 1 C 0 2 C 328 F to 1562 F 328 F to 1562 F 0 2 F 404 1000 200 C to x850 C 200 Cto 240 C 0 1 C 0 2 C 328 F to 1562 F 328 F to 464 F 02 F 04 F nae 200 C to 630 C 200 Cto 630 C 0 1 C 02 C 328 F to 1166 F 328 F to 1166 F 0 2 F 04 F m 200 C to 630 C 200 Cto 630 C 0 1 C 02 C EANET 328 F to 1166 F 328 F to 1166 F 02 F 04 F SE eee 200 C to 630 C 200 Cto 630 C 01 C 02 C 328 F to 1166 F 328 F to 1166 F 02 F 04 F 1000 200 C to 830 C 200 Cto 230 C 0 1 C 02 C 328 F to 1166 F 328 F to 446 F 0 2 F 04 F 100 C to 260 C 01 C 0 2 C Copper 426 10Q Not allowed 148 F to 500 F 0 2 F CE 04 F 100 C104260 C 100 Cto 260 C 0 1 C 01 C Nickel 618 0 12082 C148 F
27. of any channel diagnostic test causes the faulted channel status LED to blink All channel faults are indicated in bits 13 15 of the channel s status word Channel faults are self clearing when the fault conditions are corrected and the channel LED will stop blinking and resume steady illumination when the fault conditions are corrected The following are definitions of some of the terms and abbreviations used in this document A D Refers to the analog to digital converter inherent to the RTD resistance input module The converter produces a digital value whose magnitude is proportional to the instantaneous magnitude of an analog input signal channel Refers to one of four small signal analog input interfaces available on the module s terminal block Each channel is configured for connection to an RTD or potentiometer input device and has its own diagnostic status word Product Data SLC 500 RTD resistance Input Module 16 common mode rejection ratio The ratio of a device s differential voltage gain to common mode voltage gain Expressed in dB CMRR is a comparative measure of a device s ability to reject interference caused by a voltage common to its input terminals relative to ground CMRR 20 Logo V1 V2 cut off frequency The frequency at which the input signal is attenuated 3dB by the digital filter Frequency components of the input signal below the cut off frequency are passed with under 3dB of attenuation
28. pendent of Excitation Current 10092 Platinum RTD 385 2002 Platinum RTD 385 5002 Platinum RTD 385 10092 Platinum RTD 3916 2002 Platinum RTD 3916 50092 Platinum RTD 3916 1202 Nickel RTD 618 1209 Nickel RTD 672 6042 Nickel Iron RTD 518 200 C to 850 C 328 F to 1562 F 200 C to 850 C 328 F to 1562 F 200 C to 850 C 328 F to 1562 F 200 C to 630 C 328 F to 1166 F 200 C to 630 C 328 F to 1166 F 200 C to 630 C 328 F to 1166 F 100 C to 260 C 148 F to 500 F 80 C to 260 C 1129F to 500 F 100 C to 200 C 148 F to 392 F RTD Type Temperature Range Dependent of Excitation Current 10002 Platinum RTD 385 200 C to 850 C 328 F to 1562 F for 0 5 mA excitation 200 C to 240 C 328 F to 464 F for 2 0 mA excitation 100022 Platinum RTD 3916 200 C to 630 C 328 F to 1166 F for 0 5 mA excitation 200 C to 230 C 328 F to 446 F for 2 0 mA excitation 1082 Copper RTD 426 9 100 C to 260 C 148 F to 500 F for 2 0 mA excitation Important 0 5 mA excitation current is not allowed for this RTD Resistance Input Types 150 for 0 5 and 2 0 mA excitation 500 for 0 5 and 2 0 mA excitation 1000 2 for 0 5 and 2 0 mA excitation 30000 0 5 mA excitation 0 to 3000 2 2 0 mA excitation 0 to 1900 2 Temperature Scale Selectable
29. rmat for 100 Copper 426 RTD Input Type Data Format Excitation Current Engineering Units x 1 Engineering Units x 10 g g Scaled for PIp Proportional Counts 0 1 C 0 1 F 1 0 C 1 0 F Default 0 5 mA not allowed Sss mE ion Se oa 2 0 mA 1000 to 2600 1480 to 5000 100 to 260 148 to 500 0 to 16383 32768 to 32767 Actual value at 0 C is 9 042O per SAMA standard RC21 4 1966 Data Format for 150 Q Resistance Input Type Resistance Input Type 15002 Data Format Engineering Units x 1 Engineering Units x 10 0 01 Ohms 0 to 15000 0 1 Ohms Scaled for PID 0 to 1500 0 to 16383 Proportional Counts Default 32768 to 32767 When ohms are selected the temperature units selection bit 8 is ignored Data Format for 50002 and 100002 Resistance Input Types Data Format Resistance Input Type Engineering Units x 1 Engineering Units x 10 A put Typ g g g g Scaled for PID Proportional Counts 0 1 Ohms 1 0 Ohms Default 50002 0 to 5000 0 to 500 0 to 16383 32768 to 32767 100022 0 to 10000 0 to 1000 0 to 16383 32768 to 32767 When ohms are selected the temperature units selection bit 8 is ignored Data Format for 300002 Resistance Input Type Data Format Excitation Current Engineering Units x 1 Engineering Units x 10 Proportional Counts for PID 0 1 Ohms 1 0 Ohms nesiedstur Default 0 5 mA 0 to
30. shooting time and money High Accuracy In A Small Package Typical module accuracy is 0 0546 of full scale for platinum RTDs In addition two current sources per channel are user selectable to limit RTD self heating and provide greater system temperature accuracy What s Inside Page Features and Benefits 2 Hardware Overview 3 Module Operation 4 Module Wiring 9 Module Addressing 10 Module Diagnostics 15 Terms and Abbreviations 15 Specifications 18 Support Services 23 Hardware Overview Product Data SLC 500 RTD resistance Input Module The RTD input module fits into any single slot of an SLC 500 modular system except the processor slot or an SLC 500 fixed system expansion chassis It uses eight input words and eight output words with four inputs multiplexed into an A D converter It interfaces with up to 12 RTD types such as platinum nickle copper and nickle iron and with resistance devices such as potentiometers The module contains a removable terminal block providing connection for any mix of four RTD sensors or resistance input devices There are no output channels on the module Module configuration is done via the user program There are no DIP switches
31. to 500 F 148 Fto 500 F 0 2 F 02 F 80 C104260 C 80 Ct0 260 C 01 C 01 C Nickel 672 D 0084 112 F to 500 F 112 Fto 500 F 02 F 02 F 100 Ct0 200 G 100 Cto 200 C 01 C 01 C Nickel Iron 518 6042 C148 F to 392 F 148 F104392 F 02 F 02 F The digits following the RTD type represent the temperature coefficient of resistance o which is defined as the resistance change per ohm per C For instance Platinum 385 refers to a platinum RTD with 0 00385 ohms ohm C or simply 0 00385 C The temperature range for the 1000 2 RTD is dependant on the excitation current G Actual value at 0 C is 9 042Q per SAMA standard RC21 4 1966 Actual value at 0 C is 100 2 per DIN standard To maximize the relatively small RTD signal only 2 mA excitation current is allowed Product Data SLC 500 RTD resistance Input Module RTD Accuracy and Temperature Drift Specifications RTD Tvpe Accuracy O Accuracy Temperature Drift Temperature Drift yp 0 5 mA Excitation 2 0 mA Excitation 0 5 mA Excitation 2 0 mA Excitation mum 1 0 CO 05 C 0 034 C C F 0 014 GC 2 0 F 09 F 0 061 F F CE 0 025 F F m 1 0 CO 05 C 0 034 C C 0 014 C C Sens 2 0 F 0 9 F 0 061 F F 0 025 F F inum eo m 06 C 05 C 0 017 C
32. ut error and the data is used in your ladder program Calibration The RTD module is initially calibrated at the factory The module also has an autocalibration function Autocalibration compensates for offset and gain drift of the analog circuitry caused by temperature change within the module When a channel becomes enabled the module configures the channel and performs the autocalibration on the channel Each of the module s channels undergoes a calibration cycle at power up on channel configuration or on your command via the ladder program No external user supplied device is required for autocalibration Product Data SLC 500 RTD resistance Input Module Compatibility with Controllers and RTD Sensors The NR4 module is fully compatible with all SLC 500 fixed and modular controllers It is compatible with all RTDs that conform to the international and local standards shown in the table below RTD Type a0 IECO DING D100 SAMAO JIS old JIS new Minco 100 Q Platinum 0 00385 X X X 200 Q Platinum 0 00385 X X X 500 Q Platinum 0 00385 X X X 1000 2 Platinum 0 00385 X X X 100 Q Platinum 0 03916 X X 200 Q Platinum 0 03916 X X 500 2 Platinum 0 03916 X X 1000 Q Platinum 0 03916 X X 10 Q Copper 0 00426 X 120 Q Nickel 0 00618 X 120 2 Nickel 0 00672 X 604 2 Nickel Iron 0 00518 e e660e6060636603G a is the temperature coefficient of resistanc

RTD/Resistance Input Module - RS Components International

Contents

Download Pdf Manuals

Related Search

Related Contents