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Data Sheet IB IL TEMP 2 RTD

1. Og O w O S at Q 57550013 Connection of resistance thermometers in 2 wire technology Figure 14 2 wire technology is a cost effective connection method The U and U cables are no longer needed here The temperature related voltage is not directly measured at the sensor and therefore not falsified by the two cable resistances R see Figure 14 The measuring errors that occur can make the entire measurement unusable see diagrams in Figure 15 to Figure 17 However these diagrams also show the positions in the measuring system where steps can be taken to minimize these errors 5755B PHOENIX e CONTACT IB IL TEMP 2 RTD Systematic Errors During Temperature Measurement In 2 Wire Technology 15 0 A K 1 12 0 AT 9 0 r 6 0 3 0 3 0 0 00 2 5 5 0 7 5 10 0 125 15 0 17 5m 20 0 lI 57551014 Figure 15 Systematic temperature measuring error AT depending on the cable length 1 Curves depending on the cable diameter A 1 Temperature measuring error for A 0 14 mm 26 AWG 2 Temperature measuring error for A 0 25 mm 24 AWG 3 Temperature measuring error for A 0 50 mm 20 AWG Measuring error valid for copper cable y 57 m Qmm Ty 25 C 77 F and PT 100 sensor 0 01 02 03 04 05 06 07 08 09m21 0 57550015 Systematic
2. 0 94K x 0 47 0 94 K 0 38 0 75K Ni 1000 L amp G 5 6 Q K 0 56 x 0 89K x 0 56 0 89K 0 44 0 71K Ni 500 2 8 Q K 0 72 x 1 79K x 40 72 1 79K 0 57 1 43K Viessmann KTY 81 110 10 7 Q K 0 31 x 0 47K x 0 31 0 47 K 0 25 0 37K KTY 84 6 2 Q K 0 27 x 0 81K x 0 27 0 81K 0 22 0 65K Linear resistance 0 O to 400 O 0 10 x 400 MQ x 0 10 400 MQ 0 08 820 mQ 0 O to 4kQ 0 13 x 450 x 0 13 5 Q 0 10 4Q Qc Average sensitivity for the calculation of tolerance values x Additional error due to connection using 2 wire technology see Systematic Errors During Temperature Measurement In 2 Wire Technology on page 26 Temperature response at 25 C to 55 C 13 F to 131 F Typical Maximum 2 3 4 wire 12 ppm C 45 ppm C technology 5755B PHGNIX 29 CONTACT IB IL TEMP 2 RTD Technical Data General Data Housing dimensions width x height x depth 12 2 mm x 120 mm x 66 6 mm 0 480 in x 4 724 in x 2 622 in Weight 46 g without connector Operating mode Process data operation with 2 words Connection type of the sensors 2 3 and 4 wire technology Permissible temperature operation 25 C to 55 C 13 F to 131 F Permissible temperature storage transport 25 C to 85 C 13 F to 185 F Permissible humidity operation 75 on average 85 occasionally no condensation In the
3. Assignment Configu Connection Ro Resol Format Sensor type ration type ution Word bit Word Word 1 view Bit 15 14 13 12 1110 8 7 6 5 4 3 2 1 0 Byte bit Byte Byte 2 Byte 3 view Bit 7l6 5 413 2 ol7 6 5 4 3 2 10 Channel 2 Assignment Configu Connection Ro Resol Format Sensor type ration type ution 8 PHCENIX 5755B CONTACT IB IL TEMP 2 RTD Assignment of the Terminal Points to the INTERBUS Input Data Word see page 14 Word bit Word Word 0 Mew Bit 15 14 13 12 11 10 9 8 7 4 3 2 1 0 Byte bit Byte Byte 0 Byte 1 view Bit F685 a 1 2 1 31 07 ez 4 3 2 1 0 Terminal Signal Terminal point 1 1 l4 sensor 1 d 1 Signal reference Terminal point 1 2 l4 sensor 1 Terminal point 1 3 U4 sensor 1 Shield FE Terminal point 1 4 Word bit Word Word 1 view Bit 15 14 13 12 11 10 9 8 7 4 3 ToU Byte bit Byte Byte 2 Byte 3 view Bit 7 6 5 4 3 2 1 0 7 4 3 2 1 0 Terminal Signal Terminal point 2 1 l2 sensor 2 d Signal reference Terminal point 2 2 l gt sensor 2 Terminal point 2 3 U sensor 2 Shielding Terminal point 2 4 5755B PHCENIX 9 CONTACT IB IL TEMP 2 RTD INTERBUS OUT Process Data Output Words You can configure the channels of the terminal with the two process data output words The following configurations are possible for every
4. channel independent of the other channel Sensor connection method Value of the Rg reference resistance Setting the resolution Selection of the format for representing the measured values Setting the sensor type The two channels are dependent on each other for the connection method If the 4 wire mode is activated for channel 1 channel 2 can only be operated using the 2 wire connection method The 4 wire connection method is only available for channel 1 Configuration errors are indicated by the corresponding error code as long as the IB standard format is configured as the format for representing the measured values The configuration setting is saved in a volatile memory It must be transmitted in each INTERBUS cycle After the Inline station has been powered up the message Measured value invalid error code 8004564 appears in the process input words After 1 s maximum the preset configuration is accepted and the first measured value is available If you change the configuration the corresponding channel is re initialized The message Measured value invalid error code E8004hex appears in the process data output words for 100 ms maximum If the configuration is invalid the message Configuration invalid appears error code 8010hex ES Please note that extended diagnostics is only possible if IB standard is configured as the format for representing the measured values Since
5. 12 K Ni 1000 6 17 Q K 0 11 x 0 2K x 0 11 0 2 K 0 09 0 16 K Cu 50 0 213 Q K 0 24 x 0 47K x 0 24 0 47K_ 0 18 0 35 K Ni 1000 L amp G 5 6 Q K 0 138 x 0 21K x 0 13 0 21K 0 11 0 18 K Ni 500 2 8Q K 0 17 x 0 43K x 0 17 0 43 K 0 14 0 36 K Viessmann KTY 81 110 10 7 Q K 0 07 x xO 11 K x 0 07 0 11K 0 06 0 09 K KTY 84 6 2 Q K 0 06 x 0 19K x 0 06 0 19K 0 05 0 16 K Linear resistance 0 Q to 400 Q 0 025 x 100 MQ x 0 025 100 mQ 0 019 75 mQ 0 Q to 4 kQ 0 03 x 41 2Q0 x 40 03 41 2Q 40 025 4102 Qc Average sensitivity for the calculation of tolerance values x Additional error due to connection using 2 wire technology see Systematic Errors During Temperature Measurement In 2 Wire Technology on page 26 28 PHCENIX 5755B CONTACT IB IL TEMP 2 RTD Maximum Measuring Tolerances at 25 C 77 F a 2 Wire Technology 3 Wire Technology 4 Wire Technology at 100 C Relative Absolute Relative Absolute Relative Absolut 212 F e Temperature sensors PT 100 0 385 Q K 0 12 x 1 04K x 0 12 1 04K 0 10 0 83K PT 1000 3 85 Q K 0 15 x 1 3K x 0 15 1 3 K 0 12 1 04 K Ni 100 0 617 Q K 0 36 x 0 65K x 0 36 0 65 K 0 29 0 52K Ni 1000 6 17 Q K 0 45 x 0 81K x 0 45 0 81 K 0 36 0 65K Cu 50 0 213 Q K 0 47 x
6. F sT C x E 32 Where T F Temperature in F T C Temperature in C x 5755B PHCENIX CONTACT IB IL TEMP 2 RTD Input Measuring Ranges No Input Sensor Type Measuring Range Software Supported Lower Limit Upper Limit 0 Pt 200 C 328 F 850 C Ro 102to3000Q A to DIN 1562 F 1 Pt 200 C 328 F 850 C Ro 1092 to 30009 6619 SAMA 1562 F 2 Ni 60 C 76 F 180 C 356 F Rgi00103000 0 9 to DIN 3 Ni 60 C 76 F 180 C 356 F Temperature Ro 10 Q to 3000 Q AECE RAMA 4 sensors Cu10 70 C 94 F 500 C 932 F 5 Cu50 50 C 58 F 200 C 392 F 6 Cu53 50 C 58 F 180 C 356 F 7 Ni 1000 L amp G 50 C 58 F 160 C 320 F 8 Ni 500 Viessmann 60 C 76 F 250 C 482 F 9 KTY81 110 55 C 67 F 150 C 302 F 10 KTY84 40 C 40 F 300 C 572 F 11 Reserved 12 13 Relative 0 4 KQ Ro x 100 potentiometer 400 maximum range 14 00 400 Q Linear resistance 15 measuring range 02 4000 92 z The number No corresponds to the code of the sensor type in bit 3 through bit O of the process data output word 5755B PHCENIX CONTACT 23 IB IL TEMP 2 RTD Measuring Errors Systematic Measuring Errors During Temperature Measurement With Resistance Thermometers When measuring temperatures with resistan
7. this format is preset on the terminal it can be used straight away after power up Default Connection 3 wire technology Ro 100 Q Resolution 0 1 C Format Format 1 IB standard Sensor type PT 100 DIN 10 PHGNIX 5755B CONTACT IB IL TEMP 2 RTD One process data output word is available for the configuration of each channel Process data word O Process data word 1 Channel 1 Channel 2 MSB LSB l l Configuration Connection RO Resolution Format Sensor type type 5755A006 Bild 7 Process data output words 5755B PHOENIX 11 CONTACT IB IL TEMP 2 RTD Bit 15 and bit 14 You must set bit 15 of the corresponding output word to 1 to configure the terminal or a certain channel If bit 15 0 the preset configuration is active Bit 14 is of no importance at present therefore it should be set to 0 Bit 13 and bit 12 Code Connection Type Dec Bin 0 00 3 wire 1 01 2 wire 2 10 4 wire only channel 1 3 11 Reserved Bit 11 through bit 8 Code Ro Q Code Ro Q Dec Bin Dec Bin 0 0000 100 8 1000 240 1 0001 10 9 1001 300 2 0010 20 10 1010 400 3 0011 30 11 1011 500 4 0100 50 12 1100 1000 5 0101 120 13 1101 1500 6 0110 150 14 1110 1 2000 7 0111 200 15 1111 3000 adjustable Bit 7 and bit 6 Code Resolution for Sensor Type Dec Bi
8. 2 RTD Connection Examples 3 When connecting the shield at the terminal you must insulate the shield on the sensor side shown in gray in Figure 5 and Figure 6 Use a connector with shield connection when installing the sensors Figure 5 shows the connection schematically without shield connector Connection of Passive Sensors 5755B004 5755B011 Figure 5 Sensor connections Figure 6 Sensor connections in 2 and 3 wire technology with in 4 wire technology with shield shield connection connection A Channel 1 2 wire technology A Channel 1 4 wire technology B Channel 2 3 wire technology B Channel2 2 wire technology MIROR PHCENIX E CONTACT IB IL TEMP 2 RTD Programming Data ID code 7Fhex 127 gee Length code 02hex Input address area 4 bytes Output address area 4 bytes Parameter channel PCP O bytes Register length bus 4 bytes INTERBUS Process Data Words INTERBUS Output Data Words for the Configuration of the Terminal see page 11 Word bit Word Word 0 view Bit 15 14 49 12 40140 8 7 6 5 4 3 2 1 0 Byte bit Byte Byte 0 Byte 1 view Bit E 3 E 6 ol7 6 5 4 3 2 10 Channel 1
9. IB IL TEMP 2 RTD INTERBUS Inline Terminal With Two Analog Input Channels for the Connection of Temperature Shunts RTD Data Sheet 5755B 02 2001 57551001 3 This data sheet is intended to be used in conjunction with the Configuring and Installing the INTERBUS Inline Product Range User Manual IB IL SYS PRO UM E Function The IB IL TEMP 2 RTD terminal is designed for use within an INTERBUS Inline station This terminal provides a two channel input module for resistive temperature sensors This terminal supports platinum or nickel sensors according to the DIN standard and SAMA Directive In addition CU10 CU50 CU53 KTY81 and KTY84 sensors are supported The measuring temperature is represented by a 16 bit value in two INTERBUS data words one word per channel Features Two inputs for resistive temperature sensors Configuration of the channels with INTERBUS Measured values can be represented in 3 different formats Connection of sensors in 2 3 and 4 wire technology Figure 1 Is 57550010 Terminal IB IL TEMP 2 RTD with connector fitted Please note that the connector is not supplied with the terminal Please refer to the ordering data on page 32 to order the appropriate connectors for your application 5755B PHOENIX CONTACT IB IL TEMP 2 RTD Table of Contents FUNCION ci A e da aca 1 Safety Note a en t Ce eo been 4 Installation Instructions aana a E E AEAEE neme
10. TSTSIS S OOOO Format 3 eel eofeferofolojrjojolefo 2 trama 5755A009 Bild 8 Sequence of the process data input words in the INTERBUS ring and representation of the bits of the first process data word in different formats MSB Most significant bit LSB Least significant bit SB Sign bit AV Analog value Reserved OC Opencircuit short circuit OR Over range 14 PHOENIX id CONTACT IB IL TEMP 2 RTD The IB standard process data format 1 supports extended diagnostics The following error codes are possible Code hex Error 8001 Over range 8002 Open circuit or short circuit only available in the temperature range 8004 Measured value invalid no valid measured value available 8010 Configuration invalid 8040 Terminal faulty 8080 Under range Open Circuit Short Circuit Detection Open circuit is detected according to the following table Faulty Sensor Temperature Measuring Range Resistance Measuring Range Cable 2 wire 3 wire 4 wire 2 wire 3 wire 4 wire I Yes Yes Yes Yes Yes No l Yes Yes Yes Yes Yes No U Yes Yes U Yes Yes Yes Yes Yes Open circuit short circuit is detected The cable is not connected in this connection method No Open circuit short circuit is not detected because the value is a valid measured value 5755B PHOENIX CONTACT IB IL TEMP 2 RTD Formats for Representing Measured Va
11. acteristic curves According to DIN according to SAMA Conversion time of the A D converter 120 us typical Process data update Dependent on the connection method Both channels in 2 wire technology 20 ms One channel in 2 wire technology 20 ms one channel in 4 wire technology Both channels in 3 wire technology 32 ms Safety Devices None Electrical Isolation bus terminal supply Ugk and the I O supply Uy Us from separate power supply units For the electrical isolation between logic level and I O area it is necessary to provide the Interconnection of the 24 V power supplies is not allowed Common Potentials 24 V main supply Uy 24 V segment voltage Us and GND have the same potential FE functional earth ground is a separate potential area Isolated Voltages in the IB IL TEMP 2 RTD Terminal Test Distance Test Voltage 7 5 V supply bus logic 24 V analog supply analog I O 500 V AC 50 Hz 1 min 7 5 V supply bus logic functional earth ground 500 V AC 50 Hz 1 min 24 V analog supply analog I O functional earth ground 500 V AC 50 Hz 1 min 5755B PHCENIX 1 CONTACT IB IL TEMP 2 RTD Error Messages to the Higher Level Control or Computer System Failure of the internal voltage supply Yes Failure or dropping of communications voltage UL Yes I O error message to the bus termi
12. ce 4 Wire Technology thermometers systematic measuring errors are often the cause of incorrect measured results The 4 wire technology is the most precise way of measuring see Figure 12 There are three main ways to connect the sensors 2 3 and 4 wire technology 5755B012 Figure 12 Connection of resistance thermometers in 4 wire technology In 4 wire technology a constant current is sent through the sensor via the I and l cables Two further cables U and U can be used to tap and measure the temperature related voltage at the sensor The cable resistances have absolutely no effect on the measurement 24 PHCENIX 5755B CONTACT IB IL TEMP 2 RTD 3 Wire Technology 2RTD Qi 5755B018 Connection of resistance thermometers in 3 wire technology Figure 13 In 3 wire technology the effect of the cable resistance on the measured result in the terminal is eliminated or minimized by multiple measuring of the temperature related voltage and corresponding calculations The results are almost as good in terms of quality as with 4 wire technology in Figure 12 However 4 wire technology offers better results in environments prone to interference 2 Wire Technology OD 2RTD N
13. f the terminal points EEPROM INTERBUS protocol chip Optocoupler DC DC converter with electrical isolation Microprocessor with multiplexer and analog digital converter Reference voltage Electrically erasable programmable read only memory Amplifier Other symbols are explained in the IB IL SYS PRO UM E User Manual 5755B PHOENIX CONTACT IB IL TEMP 2 RTD Electrical Isolation INTERBUS INTERBUS Local bus IN Bus uei Local bus OUT U 7 5V DC M m 7 5 V DC I e BB U 24 V DC Unna 24 V DC B A I O interface B and t5Vy microprocessor Electrical isolation between area AandB Ground potential Analog inputs 5722A007 Bild 4 Electrical isolation of the single function areas Connection Connection of the Thermocouples 3 Always connect temperature shunts using shielded twisted pair cables Connection of the Shield 3 The connection of the shield is shown in the examples Figure 5 Connect the shielding of the Inline terminal using the shield connector clamp The clamp connects the shield directly to FE on the terminal side Additional wiring is not necessary Isolate the shield at the sensor Sensor Connection In 4 Wire Technology 3 A sensor can only be connected to channel 1 in 4 wire technology In this case the sensor on channel 2 can only be connected in 2 wire technology 6 PHCENIX 5755B CONTACT IB IL TEMP
14. gh 10 13 14 15 Resolution Bits 7 and 6 01 bin 11bin 01 bin 01 bin 01 bin Process Data Analog Value 0 01 C 0 01 F 0 1 0 01 Q 0 1 0 hex dec C F Q Q 8002 Open circuit 8001 gt 325 12 325 12 3251 2 Over range see page 23 2710 10000 100 00 1000 0 100 00 1000 0 10 x Ro 03E8 4000 10 00 100 0 10 00 100 0 1 x Ro 0001 1 0 01 0 1 0 01 0 1 0 01 x Ro 0000 0 0 0 0 0 FFFF 1 0 01 si D8FO 10000 100 00 8080 Under range see page 23 8002 Short circuit I If the measured value is outside the representation area of the process data the error message Over range or Under range is displayed 5755B PHOENIX CONTACT 17 IB IL TEMP 2 RTD Format 2 This format can be selected for each channel using bits 5 and 4 bit combination 01 of the corresponding process data output word The measured value is represented in bits 14 through 3 The remaining 4 bits are available as sign and error bits ps ejejelwlejs Jo els 3 2 4 0 EII O 1 ES ES 55200060 Bild 10 Measured value representation in format 2 12 bits SB Sign bit AV Analog value 0 Reserved OC Open circuit short circuit OR Over range 18 PHCENIX 5755B CONTACT IB IL TEMP 2 RTD Typical Analog Values Depending on the Resolution Sensor Type Bits 3 through 0 RTD Sensor 0 through 13 Reso
15. in Process Data Analog Value 0 1 C 0 1 F 10 hex dec C PF Q 7FFF 32767 gt 2048 Upper limit value 1 LSB Over range 7D00 32000 2000 2710 10000 1000 0 625 000A 10 1 0 625 0001 1 0 1 0 0625 0000 0 0 0 FFFF 1 0 1 FC18 1000 100 0 Lower limit value 1 LSB Under range Lower limit value 2 LSB Open circuit short circuit Sensor Type Bits 3 through 0 RTD Sensor 0 through 10 Linear Resistance 15 Resolution Bits 7 and 6 01 bin 11pin 01 bin Process Data Analog Value 0 01 C 0 01 F 0 1 Q hex dec C F Q 7FFF 32767 gt 4096 Upper limit value 1 LSB Over range x 7D00 32000 320 00 4000 2710 10000 100 0 1250 0001 1 0 1 0 125 0000 0 0 0 FFFF 1 1 0 D8FO 10000 100 0 Lower limit value 1 LSB Under range Lower limit value 2 LSB Open circuit short circuit The limit values can be found on page 23 5755B PHOENIX CONTACT 21 IB IL TEMP 2 RTD Measuring Ranges Measuring Ranges Depending on the Resolution IB Standard Format Resolution Temperature Sensors 00 273 C to 3276 8 C Resolution 0 1 C 01 273 C to 327 68 C Resolution 0 01 C 10 459 F to 3276 8 F Resolution 0 1 F 11 459 F to 327 68 F Resolution 0 01 F 3 Temperature values can be converted from C to F with this formula T
16. lues Format 1 IB Standard Default Setting The measured value is represented in bits 14 through O An additional bit bit 15 is available as a sign bit This format supports extended diagnostics Values gt 8000pex indicate an error The error codes are listed on page 15 DEPL ee eles 55641008 Bild 9 Measured value representation in format 1 IB standard 15 bits SB Sign bit AV Analog value Typical Analog Values Depending on the Resolution Sensor Type Bits 3 through 0 0 through 10 13 14 15 Resolution Bits 7 and 6 O0pin 10bin O0pin O0pin 00pin Process Data Analog Value 0 1 C 0 1 F 1 0 1 o 10 hex dec C F Q Q 8002 Open circuit 8001 Over range 400 4000 see page 23 2710 10000 1000 0 OFAO 4000 400 0 4000 400 4000 40 x Ro 00A0 10 1 0 10 1 0 10 0 10 x Ro 0001 1 0 1 1 0 1 1 0 01 x Ro 0000 0 0 0 0 0 FFFF 1 0 1 16 PHGNIX 5755B CONTACT IB IL TEMP 2 RTD Sensor Type Bits 3 through 0 0 through 10 13 14 15 Resolution Bits 7 and 6 00bin 105i O0pin O0pin O0pin Process Data Analog Value 0 1 C 0 1 F 196 0 1 o 10 hex dec C F Q Q FC18 1000 100 0 8080 Under range see table on page 23 8002 Short circuit Sensor Type Bits 3 through 0 0 throu
17. lution Bits 7 and 6 00bin 19 pin 01 bin 11bin Process Data Analog Value 0 1 C 0 1 F 0 01 C 0 01 F hex dec C F C F XXXX XXXX XXXX XXX1 pin Over range AV positive final value from the table on page 23 2710 10000 1000 0 100 00 03E8 1000 100 0 10 00 0008 8 0 8 0 08 0000 0 0 0 FFF8 8 0 8 0 08 FC18 1000 100 0 10 00 XXXX XXXX XXXX XXX1 pin Under range AV z negative final value from the table on page 23 XXXX XXXX XXXX XX Xpin Open circuit short circuit AV z negative final value from the table on page 23 AV Analog value x Can have the values 0 or 1 3 If the measured value is outside the representation area of the process data bit O is set to 1 On an open circuit short circuit bit 1 is set to 1 5755B PHCENIX CONTACT 19 IB IL TEMP 2 RTD Format 3 This format can be selected for each channel using bits 5 and 4 bit combination 10p of the corresponding process data output word The measured value is represented in bits 14 to 0 An additional bit bit 15 is available as a sign bit a FE ECE SE 55641008 Bild 11 Measured value representation in format 3 15 bits SB Sign bit AV Analog value 20 PHOENIX 57558 CONTACT IB IL TEMP 2 RTD Typical Analog Values Depending on the Resolution Sensor Type Bits 3 through 0 RTD Sensor 0 through 10 Linear Resistance 15 Resolution Bits 7 and 6 00bin 10bin 00b
18. n O through 10 13 14 15 0 00 0 1 C 1 0 1 Q 10 1 01 0 01 C 0 1 0 01 Q 0 1 Q 2 10 0 1 F Reserved Reserved Reserved 3 11 0 01 F 12 PHCENIX 5755B CONTACT IB IL TEMP 2 RTD Bit 5 and bit 4 Code Format Dec Bin 0 00 Format 1 IB standard 15 bits sign bit with extended diagnostics Compatible with ST format 1 01 Format 2 12 bits sign bit 3 diagnostic bits 2 10 Format 3 15 bits sign bit 3 11 Reserved Bit 3 through bit 0 Code Sensor Type Code Sensor Type Dec Bin Dec Bin 0 0000 Pt DIN 8 1000 Ni 500 Viessmann 1 0001 Pt SAMA 9 1001 KTY 81 110 2 0010 Ni DIN 10 1010 KTY 84 3 0011 Ni SAMA 11 1011 Reserved 4 0100 Cu10 12 1100 Reserved 5 0101 Cu50 13 1101 Potentiometer 6 0110 Cu53 14 1110 Linear R 0 through 400 Q 7 0111 Ni 1000 Landis amp Gyr 15 1111 Linear R 0 through 4000 Q 5755B PHOENIX 13 CONTACT IB IL TEMP 2 RTD INTERBUS IN Process Data Input Words The measured values are transmitted per channel through the INTERBUS IN process data input wo rds to the controller board or the computer The three formats for representing the input data are shown in Bild 8 For more detailed information on formats please refer to Formats for Representing Measured Values on page 16 Process data word O Process data word 1 Channel 1 Channel 2 MSB LSB SISTSIS
19. n nnne nnne ne nn ENA AA PENA nennen nnne 4 Internal Circuit Diagram sitiado ie 5 Electrical Isolation Em 6 CONC estirar lares 6 Connection Examples ssssssssesseeeeeeee nc 7 Programming Data la a elites ida 8 INTERBUS Process Data Words ooococcocccinocccccooccconnccnnonccnonocannnnconnnn canon cnn eene eene nnns nennen eren 8 Formats for Representing Measured Values ssssseseeeeeennenne mene 16 Measuring Ranges 22 Measuring Errors acosan ia 24 Tolerance and Temperature Response oocccccccooocccccononnnonocinnnnconcnnnnncnnnnnnnnnnnnr nan nnnnn nenne nnne 28 Technical Data iet a een eh e et etre rb erste nos ad cil 30 Ordering Data andara 32 2 PHGNIX 5755B CONTACT IB IL TEMP 2 RTD Local Diagnostic and Status Indicators Des Color Meaning Bus diagnostics Pin Assignment for 2 and 3 Wire Assignment RTD sensor 1 Constant current supply Measuring input sensor 1 RTD sensor 2 Constant current supply Measuring input sensor 2 D Green Termination Terminal Signal Points 1 1 lt 1 2 l4 1 3 U4 2 1 lo 2 2 l gt 2 3 Us 1 424 Shield Shield connection channel 1 and 2 Pin Assignment for 4 Wire Termination on Channel 1 and 2 Wire Termination on Assignment RTD sensor 1 Constant current sup
20. nal Error Messages Via Process Data I O error user error Yes see page 15 Ordering Data Description Order Designation Order No Terminal with two resistive temperature sensor IB IL TEMP 2 RTD 27 26 308 inputs 3 You need a connector with shield connector for the terminal Connector with shield connector IB IL SCN 6 SHIELD 27 26 353 Package unit 5 pcs Configuring and Installing the INTERBUS Inline IB IL SYS PRO UM E 27 4304 8 Product Range User Manual Phoenix Contact GmbH amp Co Flachsmarktstr 8 32825 Blomberg Germany TY 49 52 35 300 49 52 35 34 12 00 ml j Ea www phoenixcontact com 32 PHOENIX CONTACT 5755B O Phoenix Contact 02 2001 Subject to technical modification TNR 94 24 82 3
21. ply Measuring input sensor 1 Measuring input sensor 1 RTD sensor 2 Constant current supply Channel 2 de Terminal Signal Figure 2 IB IL TEMP 2 RTD Points with the appropriate connector 1 1 hu 1 2 l4 1 3 U4 2 3 Ui 2 1 lo 2 2 lz 1 4 2 4 Shield Shield connection channel 1 and 2 Is A sensor can only be connected to channel 1 using 4 wire technology az PHCENIX CONTACT IB IL TEMP 2 RTD Safety Note inputs and INTERBUS This means that the user must provide signals with safe isolation During configuration ensure that no isolating voltage is specified between the analog for the thermistor detection if required Installation Instructions High current flowing through the potential jumpers Uy and Us raises the temperature of the potential jumpers and the temperature inside the terminal Observe the following instructions to keep the current flowing through the voltage jumpers of the analog terminals as low as possible If this is not possible in your application and if you are using analog terminals in a main circuit together with other terminals place the analog terminals behind all the other terminals at the end of the main circuit Each of the analog terminals needs a separate main circuit 4 PHGNIX 57558 CONTACT IB IL TEMP 2 RTD Internal Circuit Diagram INTERBUS Ls Figure 3 Internal wiring o
22. range from 25 C to 55 C 13 increased humidity gt 85 must be ta I F to 131 F appropriate measures against ken Permissible humidity storage transport 75 on average 85 occasionally For a short period slight condensation 23 no condensation may appear on the housing if for example the terminal is brought into a closed room from a vehicle Permissible air pressure operation 80 kPa to 106 kPa up to 2000 m 6561 680 ft above sea level Permissible air pressure storage transport 70 kPa to 106 kPa up to 3000 m 9842 520 ft above sea level Degree of protection IP 20 according to IEC 60529 Class of protection Class 3 according to VDE 0106 IEC 60536 Interface INTERBUS local bus Data routing Power Consumption Communications voltage UL 7 5V Current consumption from U 43 mA typical I O supply voltage Uana 24V DC Current consumption from Uana 11 mA typical Total power consumption 590 mW typical 30 PHOENIX 5755B CONTACT IB IL TEMP 2 RTD Supply of the Module Electronics and I O Through Bus Terminal Power Terminal Connection method Voltage routing Analog Inputs Number Two inputs for resistive temperature sensors Connection of the signals 2 3 or 4 wire shielded sensor cable Sensor types that can be used Pt Ni Cu KTY Standards for char
23. t temperature on the cable resistance This parameter does not play a great role and can hardly be influenced but it is mentioned here for the sake of completeness The equation for the calculation of the cable resistance is R Ra x 1 0 0043 x Ty R x 1 0 0043 xT y XA K Where RL Cable resistance in Q RL20 Cable resistance at 20 C 68 F in Q Cable length in m X Specific electrical resistance of copper in Qmm m A Cable diameter in mm 0 0043 1 K Temperature coefficient for copper Ty Ambient temperature cable temperature in C Since there are two cable resistances in the measuring system forward and return the value must be doubled The absolute measuring error in Kelvin K is provided for platinum sensors according to DIN using the average temperature coefficient o o 0 385 Q K for PT100 a 3 85 Q K for PT1000 5755B PHCENIX zi CONTACT IB IL TEMP 2 RTD Tolerance and Temperature Response Typical Measuring Tolerances at 25 C 77 F a 2 Wire Technology 3 Wire Technology 4 Wire Technology at 100 C Relative Absolute Relative Absolute Relative Absolute 212 F 1 Temperature sensors PT 100 0 385 Q K 0 03 x 0 26K x 0 03 0 26K 0 02 0 2 K PT 1000 3 85 Q K x0 00 x 0 31K x 0 04 0 31 K 0 03 0 26 K Ni 100 0 617 Q K 0 09 x 0 16K x 0 09 0 16K 0 07 0
24. temperature measuring error AT depending on the cable diameter A Figure 16 Measuring error valid for copper cable y 57 m Qmm Ty 25 C 77 F 5 m 16 404 ft and PT 100 sensor 2 5 2 0 15 1 0 0 5 0 0 amp AA mJ ae ASAS 30 20 10 O 10 20 30 40 50 C 60 Ty gt 57550016 Systematic temperature measuring error AT depending on the Ty cable temperature Figure 17 Measuring error valid for copper cable y 57 m Qmm 5 m 16 404 ft A 0 25 mm 24 AWG and PT 100 sensor ee PHOENIX 5755B CONTACT IB IL TEMP 2 RTD All diagrams show that the increase in cable resistance causes the measuring error A considerable improvement is made through the use of PT 1000 sensors Due to the 10 fold higher temperature coefficient a 0 385 Q K for PT100 to a 3 85 Q K for PT1000 the effect of the cable resistance on the measurement is decreased by factor 10 All errors in the diagrams above would be reduced by factor 10 Diagram 1 clearly shows the influence of the cable length on the cable resistance and therefore on the measuring error The solution is to use the shortest possible sensor cables Diagram 2 shows the influence of the cable diameter on the cable resistance It can be seen that cables with a diameter of less than 0 5 mm 20 AWG cause errors to increase exponentially Diagram 3 shows the influence of the ambien

Data Sheet IB IL TEMP 2 RTD

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