Genius RTD Input Blocks datasheet, GFK-0053C
Contents
1. This Datasheet for the IC660BBA021 Block 24 48Vdc RTD Input 6 Channels http www cimtecautomation com parts p 14417 ic660bba021 aspx Provides the wiring diagrams and installation guidelines for this GE Series 90 30 module For further information please contact Cimtec Technical Support at 1 866 599 6507 sales cimtecautomation com RTD Input Blocks June 2002 GFK 0053C 1 Description _________________________________ RTD Input blocks monitor temperature inputs from Resistive Temperature Detectors RTDs Two RTD blocks are available 15 VAC 125 VDC RTD Block IC66 BBA101 24 48 VDC RTD Block IC66 BBA021 They are identical except for the power supply RTD Input 115VAC 125VDC 1A Max Features An RTD Input block has six input circuits in three groups of two circuits each Group to group isolation is 300 volts Each input can be used with platinum nickel or copper RTDs Input data for each circuit is linearized according to the type of RTD selected Input data is reported to the CPU in engineering units of tenths of degrees Celsius tenths of degrees Fahrenheit tenths of Ohms or counts Additional configurable features include Alarm thresholds RTD resistance Alpha type Linearization Input filter time RTD blocks are factory calibrated there is no need for subsequent recalibration In addition the block s automatic diagnostics can pinpoint the cause of installation and run time errors Inpu2. 0 1 C Absolute accuracy at 25 C Platinum or Nickel 10W Copper 0 5 C typical 1 0 C maximum 5 C typical 10 C maximum Input update frequency Once every 400ms 800ms or 1600ms Input filter ranges per block 400ms 800ms 1600ms RTD linearization Platinum DIN 43760 Nickel DIN 43760 Copper Linear Resistance measurement range 0 to 5000 Ohms Diagnostics Input shorted Internal fault Wiring error Open wire Overrange Underrange High Alarm Low Alarm Refer to GFK 0867 for product standards and general specifications In the presence of severe RF interference IEC 801 3 10 V m accuracy may be degraded to 0 5 of full scale reading plus 0 5 of reading Compatibility _________________________________ Hand held Monitor IC66 HHM501D version 3 5 or later is required For an IC697 series PLC the CPU may be rel 1 IC697CPU731 or 771 or later The bus controller may be rel 1 IC697BEM731 or later For an IC600 series PLC the CPU must be rev 105 or later For a IC600 series Plus PLC rev 110 or later is required The programming software must be Logicmaster 6 rel 4 02 or later For an IC550 series PLC the CPU must be rev 3 0 or later The programming software must be rel 2 01 or later RTD Input Blocks June 2002 GFK 0053C 2 Installation Instructions _______________________ Carefully inspect all shipping containers for damage If any equipment is damaged
3. terminals 6 and 7 For an AC block connect the AC source to the HOT terminal and neutral to the NEUT terminal For a DC block connect the DC source to the DC terminal and the return to the DC terminal The ground GND terminal 5 is for block safety It is connected to the block chassis Wiring for Input Devices There are 4 terminals available for each input device a SIG RTN REF and SHLD input Connect RTDs between the SIG and RTN terminals The REF input is used for lead wire compensation of a 3 wire RTD For a 3 wire RTD connect the third wire to the REF terminal For 2 wire RTDs short the REF terminal to the RTN terminal Power 2 WIRE RTD 3 WIRE RTD SHLD 2 WIRE RTD 3 WIRE RTD BLK BLK RED Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 GND NC SIG RTN REF SHLD SIG RTN REF SHLD SIG RTN REF SHLD SIG RTN REF SHLD SIG RTN REF SHLD SIG RTN REF SHLD Each circuit also has a SHLD terminal for shield termination if desired This terminal is internally connected to the block chassis and to the input power safety ground terminal RTD Input Blocks June 2002 GFK 0053C 3 Noise Suppression If noise spikes exceeding 4000 volts will be present in the system additional noise suppression is needed to protect the block This can be provided b
4. this synchronous frequency to a 16 bit binary number The processor corrects each input measurement for lead resistance and for internal offset and gain drifts as it converts the input to an ohmic value This value is either reported as is or linearized according to the RTD type selected and converted to a value in degrees The per channel update rate input filter time is preset It may be 400 800 or 1600 milliseconds These selections provide 14 15 or 16 bit resolution of the measurement LEDs _______________________________________ The block s Unit OK and I O Enabled LEDs show its operating status Unit OK I O Enabled Meaning ON ON Block functioning CPU communicating ON OFF Block functioning No CPU communications for 3 bus scans ON Blinking Block functioning Circuit forced Blinking ON Circuit fault CPU communicating Blinking OFF Circuit fault No CPU communications for 3 bus scans Alternate Blinking Circuit fault Circuit forced Synchronous Blinking No CPU communications block number conflict OFF OFF No block power or block faulty RTD Input Blocks June 2002 GFK 0053C 4 Diagnostics _________________________________ The block s advanced diagnostics provide the messages listed below Fault messages can be cleared from the Hand held Monitor or the CPU Input Shorted Input circuit measurement below the minimum expected for RTD type May indicate a fault in the wiring or i
5. bly Be sure the keying matches Remove any obstacles and reinsert the Electronics Assembly Pay close attention to the alignment of the guide pins 3 Secure the Electronics Assembly with the screws on the top and bottom of the Terminal Assembly Note If the Electronics Assembly has been removed from a block for some length of time contaminants may have built up on the exposed connector pins After the block is reassembled these contaminants could affect the accuracy of measurements When reassembling the block push the Electronics Assembly in and out a few times to assure a fresh mating surface Block Operation ________________________________ For each pair of inputs a multiplexer switches the A D converter between the RTD inputs and internal reference resistors that are used for self calibration The following diagram shows one pair of inputs SIG RTD RTN REF A D Converter SVFC Opto Coupler Current Source Reference Resistors SIG RTD RTN REF AMP Opto Coupler Quad Opto Coupler MUX Rectifier Regulator Power Transformer Regulator Isolated DC Power Input Power Serial Bus Processor Opto couplers isolate the control and clock signals a small transformer isolates the circuit power A synchronous voltage to frequency converter changes the measured signals to the proportional frequency sent via an opto coupler to the processor The processor s frequency counter converts
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7. ecommended torque for all terminals is 6 in lb 678 N M Serial Bus Wiring Terminals 1 to 4 are for the serial bus These terminals accept one AWG 12 wire avg 3 3mm2 cross section or two AWG 14 wires each avg 2 1mm2 in cross section The minimum recommended wire size is AWG 22 avg 36mm2 in cross section Terminals 1 4 can also accommodate spade or ring terminals up to 0 27 inch 6 85mm wide with a minimum opening for a 6 screw and up to 0 20 inch 5 1mm depth from the screw center to the back barrier Be sure unshielded wire ends are not longer than 2 inches 5 cm Using one of the cable types recommended in the System and Communications User s Manual connect the serial bus to terminals 1 4 1 2 3 4 SERIAL 1 SERIAL 2 SHIELD IN SHIELD OUT If the block is at either end of the bus connect a terminating resistor of the appropriate type see the System and Communications User s Manual for details across its Serial 1 and Serial 2 terminals Serial 1 Serial 2 Shield In Shield Out Start of Bus End of Bus Terminating Resistor Serial 1 Serial 2 Shield In Shield Out Terminating Resistor Field Wiring _________________________________ Terminals 5 to 32 are for field devices They take a single wire up to AWG 14 avg 2 1mm2 in cross section Minimum recommended size is AWG 20 avg 54mm2 in cross section Wiring for Block Power For block power connect the power source to
8. il circuit faults are cleared Configuration _________________________________ First the block must be configured with a Hand held Monitor to Enter its Device Number serial bus address Enter its Reference Number required only for IC600 and IC550 series PLCs only Note If a block is configured offline it must be properly grounded and have a 75 Ohm resistor installed across its Serial 1 and Serial 2 terminals See the Discrete and Analog I O Blocks User s Manual for instructions The rest of the features can be configured either using a Hand held Monitor or by sending a Write Configuration datagram to the block from the host Feature Circuit or Block Factory Setting Selections Device Number Block null 0 to 31 a number must be selected Reference Address Block none Depends on host CPU type Baud Rate Block 153 6 std 153 6 std 153 6 ext 76 8 38 4 Kbd Channel Active Circuit yes yes no Report Faults Circuit yes yes no Linearization Circuit Platinum Platinum Nickel Copper Linear RTD Resistance Circuit 100 0 Ohms 5 0 2000 0 Ohms Alpha Type Circuit 0 003850 0 00100 0 007000 Low Alarm Circuit 200 C 32 767 to 32 767 or 0 to 65 535 High Alarm Circuit 800 C 32 767 to 32 767 or 0 to 65 535 Input Filter Time Block 1600ms 400 800 1600ms Units Block Celsius Celsius Fahrenheit Ohms counts Configuration Protection Block disabled enabled disable
9. n the RTD Internal Fault One or more of the internal auto calibration readings for a pair of channels is out of tolerance The block reports a value of zero for each channel of the faulty pair The block s Electronics Assembly should be replaced Wiring Error Connections between the RTD and the block s Terminal Assembly are incorrect This may cause faulty input data to be reported Field wiring should be changed to match the wiring diagram indicated on the block s faceplate Open Wire Less current than expected for the input type on that circuit An Open Wire diagnostic may also mean that the input circuit excitation current is not present The RTD may be missing or faulty or the RTD is not connected to the block Overrange The Celsius or Fahrenheit input value exceeds expected maximum positive value limits are 850 C or 1562 F for platinum 250 C or 482 F for nickel 3276 7 C or 3276 7 F otherwise This only occurs when converting to units of temperature Underrange The Celsius or Fahrenheit value exceeds expected maximum negative value limits are 200 C or 328 F for platinum 60 C or 76 F for nickel 3276 7 C or 3276 7 F otherwise Low Alarm High Alarm Individual low and high alarm thresholds can be configured for each input If an input reaches one of its alarm thresholds the block reports a Low Alarm or High Alarm diagnostic The diagnostic is triggered upon reaching the limit and is repeated unt
10. notify the delivery service immediately Save the damaged shipping container for inspection by the delivery service After unpacking the equipment record all serial numbers Save the shipping containers and packing material in case it is necessary to transport or ship any part of the system Block Mounting Genius I O blocks are considered open equipment and therefore must be installed within a protective enclosure They should be located in an area that is clean and free of airborne contaminants There should be adequate cooling airflow The block can be mounted right side up or upside down Leave at least 2 inches of space between blocks Mount the block by drilling two screw or bolt holes for 8 32 hardware Position the block so that the notches in the upper and lower flanges line up with the mounting holes Mount the block using 8 32 screws Use star washers to provide ground integrity Grounding The block s mounting screws must not be used as the only means of grounding the block Connect the green ground screw on the block to a reliable ground system using a short wire lead minimum size AWG 12 avg 3 3mm2 in cross section Warning If mounting screws do not make good ground connection and the ground screw is not connected to a reliable ground the block is not grounded Electrical shock hazard exists Death or personal injury may result Block Wiring ________________________________ Do not overtorque the terminal screws R
11. t Short detection Internal Fault detection Wiring Error detection Open Wire detection Overrange and Underrange input indication High and Low input alarms Fault reporting can be enabled or disabled circuit by circuit Using this Datasheet _________________________ This datasheet summarizes information about block installation configuration and diagnostics Your primary reference should be the Discrete and Analog Blocks User s Manual It includes detailed instructions for block installation and configuration For additional information about systems and communications including bus specifications refer to the I O System and Communications Manual Specifications _________________________________ Catalog Numbers 115 VAC 125 VDC RTD Block Terminal Assembly Electronics Assembly IC66 BBA101 IC66 TBA101 IC66 EBA101 24 48 VDC RTD Block Terminal Assembly Electronics Assembly C66 BBA021 IC66 TBA021 IC66 EBA021 Block Specifications Size height x width x depth 8 83 22 44cm x 3 34 8 48cm x 3 91 9 93cm Weight 4 lbs 1 8 kg LEDs I O Block Unit OK I O Enabled Block to Block Isolation 1500V Group to Group Isolation 300V Heat Dissipation 7W maximum Block Power 115VAC 125VDC 24 48VDC Power supply voltage 7W 93 132 VAC 47 63 Hz 105 145 VDC 10 max ripple 18 56 VDC 10 max ripple Power supply dropout time 1 cycle 10ms 10ms Input Specifications Input resolution
12. y physically separating and shielding the RTD input leads from any noise source Alternatively metal oxide varistors can be installed between RTN and GND See the I O System and Communications Manual and Discrete and Analog Blocks User s Manual for additional information Removing an Electronics Assembly _____________ The block s Electronics Assembly can be replaced with a compatible model without removing field wiring or reconfiguring the block Terminal Assembly Retaining Screws Qty 2 Electronics Assembly Connector Pins 1 Unscrew the retaining screws at the top and bottom of the block 2 Using a Block Puller IC660BLM507 engage the tabs in the first vent slots Move the tool to the center of the block and squeeze the handle 3 Pull the Electronics Assembly upward Warning If power is applied to the field terminals power is also exposed on the connector pins at the base of the Terminal Assembly and electrical shock hazard exists Do not touch the connector pins Death or injury may result Inserting an Electronics Assembly 1 Align the Electronics Assembly in the guides and push down firmly Caution Do not exert excessive force it may damage the block 2 If unusual resistance is met remove the Electronics Assembly If power is applied to the block DO NOT TOUCH THE CONNECTOR PINS Inspect the Terminal Assembly connector receptacle and connector edge board on the Electronics Assem
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