[PSS 21H-2C4B4] Intelligent Transmitter/0 To 20 MA Output Interface .

PSS 21H-2C4 B4I/A Series HardwareIntelligent Transmitter/0 to 20 mA Output Interface Module (FBM39)MODULE WITH DIRECTCONNECTION BLOCKMODULE WITHDISCRETEWIRE BLOCKMODULE WITH PLUGCONNECTOR BLOCKThe Intelligent Transmitter/0 to 20 mA OutputInterface Module contains four Intelligent Transmitterinterface channels and four 20 mA dc analog outputchannels. The module is a main type andindependently connects to the redundant Fieldbus.Intelligent Transmitter Interface ChannelsEach Intelligent Transmitter interface channelprovides isolated power and communicationcapabilities to an Intelligent Transmitter over a singlepair of wires. Each interface channel provides bidirectional digital communications between anIntelligent Transmitter and the redundant Fieldbus.The Intelligent Transmitter interface portion of themodule is a transmitter host, thus enabling thesystem to receive digital messages from thetransmitter in engineering units. Each measurementmessage is received ten times per second andcontains: Two measured variables (that is, primarypressure and transmitter temperature) in IEEE32-bit floating-point Security information Diagnostics Message checking.This information is available to all elements of thesystem.Product Specifications

PSS 21H-2C4 B4Page 2Since the communications are bi-directional, thesystem can display the output, transmittertemperature ( C and F), and continuous selfdiagnostics. In addition, information that can bedisplayed or reconfigured from the console or a HandHeld Terminal (PSS 2A-1Z3 A) is: Output in engineering unitsFail-safe stateTag number, name and locationDevice name (letterbug)Last calibration dateTwo levels of upload/download capabilities.An optional style of termination cable assembly isavailable which includes built-in bypass jacks foreach output channel on the front connector of theFieldbus Module. Jacks accept a bypass plug fromthe I/A Series Output Bypass Station or other external20 mA source. This option should be considered forapplications where maintaining output is desiredduring maintenance operations, for example, whenreplacing a failed module.Output ChannelsThe Intelligent Transmitter interface portion of themodule executes the Intelligent Transmitterapplication program. The configurable options for thisprogram are Fieldbus Switching Enable and FieldbusSwitching Time.Each output channel drives an external load andproduces a 0 to 20 mA output. Each output channelperforms the signal conversion required to interfacethe electrical output signals to field actuators from theredundant Fieldbus.The output channel porton of the module executesthe analog I/O application program. The configurableoptions for this program are Fail-Safe Configuration(Hold/Fallback), Analog Output Fail-Safe FallbackData (on a per channel basis), Fieldbus SwitchingEnable and Fieldbus Switching Time.REDUNDANT FIELDBUSSINGLE ORREDUNDANTPOWER SOURCEINTELLIGENTTRANSMITTERINTERFACETWISTED-PAIR WIRES(POWER, OUTPUT ANDCOMMUNICATIONS)INTELLIGENTTRANSMITTER(UP TO 4 CHANNELS)

PSS 21H-2C4 B4Page 3FUNCTIONAL SPECIFICATIONSCommon CharacteristicsPOWER REQUIREMENTSInput Voltage (Redundant)26 to 42 V dc (nominal)Consumption13 W (maximum)Heat Dissipation11 W (maximum)COMMUNICATIONVia a redundant FieldbusISOLATIONThe module withstands, without damage, apotential of 600 V ac applied for one minutebetween any channel and earth (ground), orbetween a given channel and any other channel.CAUTIONThis does not imply that these channels areintended for permanent connection tohazardous voltage circuits. Connection ofthese channels to voltages greater than30 V ac or 60 V dc violates electrical safetycode requirements and may expose users toelectric shock.Transmitter ChannelsINTERFACE4 isolated and independent channelsCOMMUNICATIONSNon-redundant, point-to-point, master/slave,asynchronous, half-duplexERROR CHECKINGCCITT 2 byte CRCTransmitter Channels (Cont.)SPEED10 messages per secondMAXIMUM DISTANCE (INTERFACE TOTRANSMITTER)609.6 m (2000 ft) (shielded twisted-pair wires)MAXIMUM LOOP RESISTANCE420 ΩTRANSMITTER POWER24 V dc 4%, -2%, source resistance 30 ΩmaximumOutput ChannelsOUTPUT4 isolated and independent channelsOUTPUT RANGE (EACH CHANNEL)0 to 20.4 mA dcOUTPUT LOAD (MAXIMUM)735 ΩCOMPLIANCE VOLTAGE18.6 V nominal at 20 mA dc at I/O field terminalsACCURACY 0.05% of span (25 C)OUTPUT TEMPERATURE COEFFICIENT100 ppm/ CSETTLING TIME10 ms to settle within a 1% band of steady state fora 10 to 90% input step change.LINEARITY ERROR 0.025% of span (monotonic)RESOLUTION12 bitsENVIRONMENTAL SPECIFICATIONS(a)OperatingTEMPERATURE0 to 60 C (32 to 140 F)RELATIVE HUMIDITY5 to 95% (noncondensing)ALTITUDE-300 to 3,000 m (-1000 to 10,000 ft)StorageTEMPERATURE-40 to 70 C (-40 to 158 F)RELATIVE HUMIDITY5 to 95% (noncondensing)ALTITUDE-300 to 12,000 m (-1000 to 40,000 ft)ContaminationClass G3 (Harsh) as defined in ISA Standard,S71.04(a) The environmental limits of this module may be enhanced by the type of enclosure containing the module. [Refer to the applicableProduct Specification Sheet (PSS) which describes the specific type of enclosure that is to be used.]

PSS 21H-2C4 B4Page 4PHYSICAL SPECIFICATIONSMountingWITH Y-ADAPTERInstallable in the 1x8 Mounting Structure,I/A Series Industrial Enclosures and FieldEnclosure 8WITHOUT Y-ADAPTERInstallable in I/A Series Field Enclosure 4 andthe 1x8 FBM Mounting StructureMass1 kg (2.2 lb)Indicators (mounted on termination connector)OPERATIONAL STATUSRed and green light-emitting diodes (LEDs)Bypass JacksAvailable on optional termination cable assemblyField Termination Connections(a)DISCRETE WIRE BLOCKInput Channels12 screw-clamp terminalsOutput Channels8 screw-clamp terminalsDIRECT CONNECTION BLOCKInput Channels12 screw-clamp terminalsOutput Channels8 screw-clamp terminalsPLUG CONNECTOR BLOCK34-pin connector. Mates with:– Burndy MSD 34 PM 118(plug with bar-type cable clamp)– Burndy MSD 34 PM 124(plug with clamshell hood)– Burndy MDS 34 PM 824 (plug with suitcase hood)– or equivalent(a) The discrete wire or plug connector block is available on termination cable assemblies for all enclosures excluding the LocalEnclosures, Field Enclosure 4, and Multiple (Bridged) Industrial Enclosure 32. The direct connection block is available only on thetermination cable assembly for the Local Enclosures and Field Enclosure 4. Multiple (Bridged) Industrial Enclosure 32s use the plugconnector block only.

PSS 21H-2C4 B4Page 5PRODUCT SPECIFICATION SHEETS (PSSs) FOR INTELLIGENT TRANSMITTERSCategoryDevice TypesMass etic FlowVortex CommunicationModelsCFS10; CFS20; CFS30CFT10; CFT15; CFT302800 SeriesIMT25/IMTL25LIMT96 (MagEXPERT)Flowmeters83 SeriesTransmittersI/A Series (-D)I/A Series (-T)I/A Series (-A, -I)I/A Series (-V)I/A Series (-F)Transmitters870IT rsHHT (FoxCom Only)PC 20 (FoxCom & HART)Model 275 (HART Only)I/A Series I’faces FBM18 & FBM39(FoxCom Only)FBM43 & FBM44PSS Numbers1-2B1 A; 1-2B4 A; 1-2B5 A1-2B3 C; 1-2B3 D; 1-2B5 A1-6B5 A, 1-6B5 C, 1-6B5 E1-6F5 A/1-6F6 A1-6F8 A1-8A1 E (83F and 83W); 1-8A2 D (83S)2A-1C13 A; 2A-1C14 A; 2A-1C14 D; 2A-1C14 E; 2A-1Z9 E2A-1C13 B; 2A-1C14 B; 2A-1C14 F; 2A-1C14 G; 2A-1Z9 E2A-1C13 C; 2A-1C14 C; 2A-1C14 H; 2A-1C14 J; 2A-1Z9 E2A-1C13 D; 2A-1Z9 E2A-1C13 E; 2A-1Z9 E6-1B1 B; 6-3N2 A2A-1F4 A; 2A-1Z9 F (Options)EVE0105 A-(en)2A-1Z3 A2A-1Z3 ENot Applicable21H-2D5 B4; 21H-2C4 B421H-2D8 B4; 21H-2D4 B4

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PSS 21H-2C4 B4Page 8The Foxboro Company33 Commercial StreetFoxboro, Massachusetts 02035-2099United States of Americahttp://www.foxboro.comInside U.S.: 1-508-543-8750 or 1-888-FOXBORO (1-888-369-2676)Outside U.S.: Contact your local Foxboro Representative.Foxboro and I/A Series are registered trademarks of The Foxboro Company.Copyright 1997-1999 by The Foxboro CompanyAll rights reservedMB 021An Invensys companyPrinted in U.S.A.1299

The Intelligent Transmitter/0 to 20 mA Output Interface Module contains four Intelligent Transmitter interface channels and four 20 mA dc analog output channels. The module is a main type and . The Intelligent Transmitter interface portion of the module is a transmitter host, thus enabling the system to receive digital messages from the