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HART Multiplexer System KFD*-HM*-16

Product specification

T-0

120D

06/

2014

3.3.5

HART Multiplexer Slave

The HART Multiplexer Slave is supplied from the HART Multiplexer Master via the

14-core flat cable. The contacting of the flat cable is provided via IDC connectors, so

that the cable can be tapped at any position. By this means, the power supply and

data cables are looped on from station to station. The address 1 ... 15 is set via a 16-

step rotary switch. Address 0 is reserved for the Multiplexer Master and must

therefore not be used. If a number of Slaves are operated on the KFD2-HMM-16,

different addresses must be assigned. The sequence therefore plays no role in this.
The analog signals are fed via a 26 core flat cable into the KFD0-HMS-16. 16 of

these are intended for the HART signal of the analog instrument circuit (the

remaining 10 are to ground) (for the assignment, see section 9.2).
The minimum load resistance of the analog measuring circuit is 230



(minimum

load impedance in accordance with HART specification), the maximum resistive load

being 500



. Load resistances of up to 1000



are possible, however, resistance

values greater than 500



can interfere with the HART communication.

Figure 3.7 Front view HART Multiplexer Slave

Slave connection

HART Multiplexer Masters and Slaves must be connected together via a separate K-

HM14 flat cable.
The length of cable required should be stated when ordering. Hence the wiring of the

HART Multiplexer is significantly simplified and the danger of wiring faults is

excluded.

3.3.6

Operation

The Multiplexer also functions as a HART device (see also section 5.4.5). However,

due to the incorporation into the operating software of the service station (see

section 3.3.3), this remains concealed from the user. The HART commands that are

supported by the Multiplexer can be found in section 9.1.
For HART communication with the transmitters, the commands of the service station

are passed through without modifications.

Rotary switch

26 pin
Connector

14 pin
Connector

Summary of Contents for KFD HM 16 Series

Page 1: ...ISO9001 3 HART Multiplexer System KFD HM 16 PROCESS AUTOMATION MANUAL ...

Page 2: ...elivery for Products and Services of the Electrical Industry published by the Central Association of the Electrical Industry Zentralverband Elektrotechnik und Elektroindustrie ZVEI e V in its most recent version as well as the supplementary clause Expanded reservation of proprietorship HART Multiplexer System KFD HM 16 ...

Page 3: ...2 6 Delivery transport and storage 7 2 7 Installation and Commissioning 8 2 8 Repair 8 2 9 Disposal 8 2 10 Applied standards and directives 8 3 Product specification 9 3 1 HART Multiplexer Master 9 3 2 Description of the HART communication 12 3 3 System construction 13 4 Installation 19 4 1 Mounting 19 4 2 Electrical connection 22 5 Commissioning 24 5 1 Commissioning check list 24 5 2 Data access ...

Page 4: ...DTM 31 6 5 Adding the HART Multiplexer 33 6 6 Setting the parameters of the HART Multiplexers 34 7 Operation 49 7 1 Device functions 49 8 Diagnosis and fault elimination 52 8 1 General 52 8 2 LED indication 52 8 3 Status response code response code 52 8 4 Extended device status 56 9 Appendix 57 9 1 Supported commands 57 9 2 Terminal assignment of the 26 pin connector with analog HART signals 60 9 ...

Page 5: ...blications of the HART Communication Foundation www hartcomm org Where reference to the bibliography is made in this manual it is indicated thus 3 The appendix also explains many terms and abbreviations used in this manual 1 2 Responsibilities of the user In order to avoid damage incorrect operation and equipment failures the user must make himself acquainted with the equipment and must have read ...

Page 6: ...sheet contains the electrical data of the Declaration of Conformity and the Certificate of Compliance The documents mentioned are available from http www pepperl fuchs com or contact your local Pepperl Fuchs representative 2 2 Used symbols This symbol indicates a warning about a possible danger Failure to observe this warning may result in personal injury or death or property damage or destruction...

Page 7: ...e g transmitter power supply device Reference should be made to the statement of conformity Identification The following identification is affixed to the Multiplexer Master Pepperl Fuchs GmbH Lilienthalstrasse 200 68307 Mannheim Germany KFD2 HMM 16 PF07 CERT 1143 X II 3 G Ex nA IIC T4 Gc The following identification is affixed to the Multiplexer Slave Pepperl Fuchs GmbH Lilienthalstrasse 200 68307...

Page 8: ...ly be connected to the supply voltage after complete mounting and connection of the sensors The name plate must not be removed 2 8 Repair The devices may not be repaired changed or manipulated If there is a defect the product must always be replaced with an original part 2 9 Disposal Disposal of devices and their packaging material must be performed in compliance with the applicable laws and guide...

Page 9: ... 1 3 Description of the hardware The HART Multiplexer can operate up to 256 analog transmitters The built in Slave unit operates the first 16 loops and a maximum of a further 15 KFD0 HMS 16 Slaves can be connected The external connections are shown in Figure 3 1 and Figure 3 2 The power supply 24 V DC nominal voltage is provided via the Power Rail or terminals 17 and 18 The optional Slave units KF...

Page 10: ...nts of the KFD2 HMM 16 KFD2 HMM 16 20 19 21 24 V DC RS 485 17 18 Power Rail 24VDC HART 14 13 15 T GND T 1 2 14 KFD0 HMS 16 1 2 23 HART Termination Board FI 24 25 26 Zone 2 Div 2 1 2 3 4 5 6 7 8 19 17 13 18 16 20 14 21 15 KFD0 HMM 16 1 26 Front view 26 pin connector LED orange Operational 14 pin connector Removable terminals green LED red Fault signal LED green Power supply ...

Page 11: ...ied by Pepperl Fuchs for this purpose Notwithstanding the common ground connection of the analog signals from the Masters Slaves the galvanic isolation of the current repeaters is secured if FI and MB boards are used which are fitted with capacitors KFD2 STC4 Ex1 or KFD2 STC4 Ex2 Ex isolation modules are used as current repeaters 3 1 5 All the functions at a glance The following list gives all the...

Page 12: ...uration is several hundred milliseconds so that between two and three messages can be transferred per second On HART there are three groups of commands The Universal commands these must be supported by all field devices the Common practice commands these are pre defined commands suitable for many field devices which if they are supported by the device must be implemented in the pre defined form de...

Page 13: ...em thus provides a subordinate service interface It is also possible to obtain measured values through the HART Multiplex System On field devices which are installed in hazardous areas the coupling takes place on the safe area side of the current repeaters Pepperl Fuchs can supply the appropriate SMART transmitter power supplies e g KFD2 STC4 and SMART repeater e g KFD2 STV4 Similarly the HART Mul...

Page 14: ...ogies and Valve Manager Neles Automation These operating tools combine the device functions of the Multiplexer in the form of menu commands in a unified interface providing a very convenient method of operation The presentation and description of the functions in the individual operating tools can be very different however thus a generally applicable presentation is not possible here Information o...

Page 15: ...iplexer Master and Slaves are installed on Flex Interfaces which transmits the signals via screw terminals In this case the Termination Board provides the connection to the Multiplexer parallel or serial This assembly method is completely independent of DCS and eventually used field barriers Figure 3 4 External assembly of Multiplexers Note Management Software KFD2 EB2 4AT KFD2 HMM 16 ON 13 14 15 ...

Page 16: ... or serial The Termination Boards are designed especially for individual DCS Figure 3 5 Assembly integrated in the DCS Management Software KFD2 EB2 4AT KFD2 HMM 16 ON 13 14 15 19 20 21 16 17 18 ON K F D 0 H M S 1 6 7 8 9 10 11 12 Flex Interface Flex Interface Converter Power Rail insert 26 way ribbon cable 14 way ribbon cable DIN Rail up to 31 HART Multiplexer Masters up to 15 HART Multiplexer Sla...

Page 17: ...9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6 KFD2 STC4 Ex2 PWR 7 8 9 10 13 14 15 1 23 4 5 6...

Page 18: ...m load resistance of the analog measuring circuit is 230 minimum load impedance in accordance with HART specification the maximum resistive load being 500 Load resistances of up to 1000 are possible however resistance values greater than 500 can interfere with the HART communication Figure 3 7 Front view HART Multiplexer Slave Slave connection HART Multiplexer Masters and Slaves must be connected ...

Page 19: ...t Wall or panel mounting Panel mounting is only recommended when a very small number of isolation components must be installed Mounting the device on the wall Pull the two clip fasteners out of the back of the device until the clips audibly click into place Fasten the device to the wall or panel with 3 mm screws The device is mounted Mounting on DIN rail When mounting on DIN rail the device is sim...

Page 20: ...ing of the power supply is eliminated An included cover provides for the mechanical and electrical protection of unused spaces Furthermore any reserved spaces are automatically connected to the power supply Third party devices which can be mounted on a DIN EN 60715 mounting rail can easily be mounted on the Power Rail as well Mixed devices from different device manufacturers are thus possible Figu...

Page 21: ...ules offers increased availability of device power In this construction not only the power supply is redundant but also the fuse and the feed points on the Power Rail are provided twice If one of the two mains fails the second supply ensures continued operation of the system free of interruption The malfunctioning power module indicates the error over a potential free contact In conjunction with P...

Page 22: ...reference should be made to the instructions in section 4 2 2 4 2 2 Connection and connection assignment of RS 485 Connector assignment of the removable terminals If the screen is grounded the grounding should only be connected to one end of the cable in order to avoid equipotential bonding currents However in all cases existing guidelines and regulations must be observed To connect a standard PC ...

Page 23: ...tion to these units can be via a system cable or even by means of conventional screw connections If the current repeaters are mounted on a motherboard MB the connection is made directly from the board to the Multiplexer via a flat cable type K HM26 The control system is connected via a system specific connector of the motherboard or the Flex interface Flex interfaces with screw terminals are avail...

Page 24: ...s set on the DIP switches Operation Wait for the start up sequence to finish see section 5 4 4 Start the parameter assignment see section 5 4 5 in particular establish the position of the Multiplexers that are being used in the module table see section 7 1 2 Carry out the loop construction REBUILD see section 7 1 5 Activate the SCAN function if required see section 7 1 7 5 2 Data access to the con...

Page 25: ...ontrol system is made via a multidrop able RS 485 interface The baud rate of this interface can be set to 9600 19200 or 38400 Baud via the DIP switches 2 and 3 see section 5 4 2 The device address for the communication via RS 485 is set by the DIP switches 4 to 8 see section 5 4 2 When setting the address care should be taken to ensure that no address is assigned more than once since this can lead...

Page 26: ...ext a search is made of the Multiplexers in the Multiplexer table command 157 for available HART compatible field devices REBUILD This function is indicated by a flashing orange LED The REBUILD function can also be started via the service station e g in order to include connected transmitters in the communication process during the operating phase The duration of this function is dependent on the ...

Page 27: ...e code Busy see section 9 1 3 The range of adjustment is 0 11 repeats In the case of communication errors the pre setting is 2 in the case of the response code Busy it is 0 SCAN command see section 7 1 7 and commands 146 and 147 Of the available SCAN parameters only the SCAN command is stored by non volatile means It signifies which HART command 1 2 or 3 is to be sent to the transmitter as the SCA...

Page 28: ... by manufacturers of field devices as configuration software 3 DTM Collection HART Multiplexer The DTM Collection comprises all Device DTMs required to parameterize the HART Multiplexer The DTM are used to establish the communication with field devices using protocols such as the HART or PROFIBUS protocol 4 HART Comm DTM This package contains the HART communication DTMs which is necessary to estab...

Page 29: ...CTwareTM Process Automation Configuration Tool manual For the free manual written in several languages please access our website at www pepperl fuchs com pa via Software PACTware Below please find the device specific settings for HART Multiplexer KFD2 HMM 16 only 6 3 Connection with the device Connect the PC to the device Mount the device on the Termination Board see section 4 1 Connect the device...

Page 30: ... the appearance of the selection window containing the drives and devices or the device catalog for setting up the system The configuration and parameterization tabs for the drives and devices also appear in the edit window During subsequent operation the diagnostic measured variable trend and simulation menus appear in the edit window The communication monitor for the communication protocol can a...

Page 31: ...Configuration Tool manual to read how to create and edit a project Do not use the Communications DTM HARD Driver FDT This is an outdated IDL DTM If such a driver is not available in your project yet use the device catalog to add it to the project Adding the Communications DTM Click with right mouse button on HOST PC Select Add Device in the context menu Select the DTM HART Communication from the l...

Page 32: ... used it may be necessary to switch on or off the request to send control in order to be able to switch over correctly between reception and transmitting mode Master Masters may be connected to one HART loop whereby the Masters have to be differentiated as primary and secondary Master by the parameterization This setting is carried out here Preamble In keeping with the HART standard a correspondin...

Page 33: ...t the scan with Refresh Figure 6 4 HART Communication window Scan list At present the addresses 0 15 only are supported Future versions will however support the entire address range from 0 31 Adding the HART Multiplexer The HART Multiplexers now have to be manually added to the project Use drag and drop to drag the suitable DTM from the device catalog to the HART Communication DTM or Click in the ...

Page 34: ... Master menu The Master window is indicated The following parameters are adjustable RS485 address The RS485 address of the HART Multiplexer is set here Long Address The distinct unchangeable long address of the HART Multiplexer is set here Master Type One HART loop may include two Masters whereby the parameterization has to be set to differentiate between primary Master and secondary Master These ...

Page 35: ...ion DOCT 0120D 06 2014 35 6 6 2 Read out the data Use Load from device to read the parameters of the Multiplexer in order to establish a connection Is no standard online off line view as usually used for FDT DTMs Figure 6 6 Read out the Data Note ...

Page 36: ... the memory When these values are queried by the control system they can be retrieved faster because the device need not be read out as the values can be taken directly from the memory The following parameters are adjustable Mode The wireless scan is switched on or off here Command Here select which values are to be read from the field devices Primary variable Now the primary variable only will be...

Page 37: ...eters are adjustable Retries on Busy Repeat attempts to establish a communication with the field device if the field device transmits Busy Retries on error Repeat attempts to establish a communication with the field device if an error occurs Searchmode Here the mode is determined which is used to search for other devices single analog The HART Multiplexer uses only poll address 0 to search for con...

Page 38: ... the project window with mouse button on Multiplexer Open the Message menu The Message window is indicated The Message menu can be used to give the HART Multiplexer an identification name Message Here a string can be defined with which the HART Multiplexer can be identified Figure 6 9 Message window ...

Page 39: ...ltiplexers Description Description of the HART Multiplexer Day of last parameterization read only Day on which the device parameter was changed last Serial number Serial number of the device Universal revision Revision of the universal HART commands supported Special revision Revision of the special HART commands supported Software revision Firmware revision of the HART Multiplexers Hardware revis...

Page 40: ...ctive modules menu via Device Additional functions Active modules The Active modules window is indicated Select the active modules for each Multiplexer As a standard only the Master is activated depending on the stage of completion select the number of Slaves connected Confirm the selection with Download active modules Figure 6 11 Active modules window ...

Page 41: ...face HART Multiplexer Master HART Multiplexer Slaves Field devices Start HART Scan function Select the Multiplexer Master in the project window Start the HART Scan via Device Additional functions HART Scan The HART Scan window is indicated Figure 6 12 Activate HART Scan function The HART scan function might not be supported by all frames or underly some limitations Note ...

Page 42: ...atic connection is established to the Slaves found Make scanning for HART devices This option is used to determine whether a search for connected HART devices is to be run Automatically add found devices to project This option is used to determine that the HART devices found are added to the project Use generic HART DTM In case if after scan no device DTM was assigned If no HART DTM has been insta...

Page 43: ...e g from VEGA it may be necessary to render available additional information by means of an XML file This can be added to the Other folder Activate the Use Additional XML file to identify SubDeviceType option Open an explorer menu via the Load button Select the requested XML file To remove an XML file from the list mark it and delete via the Delete button Figure 6 14 Parameterization of HART Scan ...

Page 44: ...tion table contains the loop number and the long frame address of the device connected to this loop This is built up during the power on of the HART Multiplexer If after the power on of the HART Multiplexer another device is connected the allocation table can be built by means of the Rebuild loops option Figure 6 15 Activate Rebuild loops function ...

Page 45: ... devices connected to these devices by means of HART Multiplexer and HART Slaves First of all the activated Slaves are added now After a Slave has been added the individual loops are scanned and the field devices found are automatically added to the structure Some manufacturers have various DTMs for the same device family In this case the correct DTM has to be chosen from the selection Figure 6 16...

Page 46: ...n of the DTMs e g version number Some DTMs do not provide this information due to which an automatic allocation is not possible Figure 6 17 Result of HART Scan Now the DTMs can be added to the project by using the Add button It is also possible to add DTMs manually in the project tree Manual adding of DTMs Use the right mouse button to click on the Slave unit where the new device shall be added Se...

Page 47: ...em KFD HM 16 Configuration DOCT 0120D 06 2014 47 Read out of parameters Read out the device parameters via Project Upload Figure 6 18 Read out of parameters The project is now complete and contains all required information ...

Page 48: ...CT 0120D 06 2014 48 If other Slaves are added later the already existing Slaves can be excluded from the scan Use the right mouse button to click on the Slave to be excluded Activate the Exclude option Figure 6 19 Exclude existing Slaves from the scan ...

Page 49: ...rocess The Multiplexer table consists of 16 Bit one for each possible Multiplexer address default module 0 Master and 1 activated 7 1 3 Interface In this way the Multiplexer Master acts as a transparent gateway between the service station typically a PC with suitable software see section 3 3 2 and the field devices The service station is able to communicate with up to 31 Multiplexer via up to 3840...

Page 50: ...a is transferred is determined by the SCAN command option command 147 If the SCAN function is activated the transmitters on which the SCAN option is activated are regularly checked for data In this case the SCAN command is executed with which one or more variables are read from the transmitter If a field device does not respond it is designated as having disappeared see command 129 but it remains ...

Page 51: ...ction of up to 15 KFD0 HMS 16 Slaves up to 7936 loops per interface 31 Multiplexers with in each case 256 channels automatic search of all existing HART field devices REBUILD facility for self standing cyclic interrogation of the HART variables SCAN acts as a primary or secondary Master fast RS 485 interface multidrop with up to 38400 Baud integrated modem removable terminals supply via Power Rail...

Page 52: ...eld device These contain three types of information Communication errors Command responses and the Device status Depending on Bit 7 the first two types are contained in the first status byte The device status is always transferred in the second byte Note Red Green Orange Cause Corrective action Off Off Off No power supply available LED s defect Check power supply Select DIP switch 1 isolate power ...

Page 53: ...reduce the baud rate Details can be found in 1 Command responses The first byte contains information relating to the execution of a command The command specific response code thus documents the execution of the command In contrast to the communication error the command responses are not coded bit by bit but are numbered consecutively from 0 to 127 Of the command responses signalled by the Multiple...

Page 54: ...parameter too large The first of the two parameters is too large 145 11 2nd parameter too large The second of the two parameters is too large 145 16 Access restricted The command has been ignored since the current device status does not permit the command to be carried out correctly 6 17 18 38 41 42 48 59 106 128 157 17 Too many items requested 131 132 133 135 141 154 31 Warning Here 137 SCAN valu...

Page 55: ...ent data are reset to the preset values Wait for the start up sequence then parameterize the device 4 Extended device status available Further status messages are available and can be called up see section 8 4 Read extended device status section 8 4 3 analog output current fixed primary variable The primary variable is fixed at the requested value and no longer follows the process always 1 has no ...

Page 56: ...t up sequence running and must be completed 6 REBUILD REBUILD function is running and must be completed 5 internal EEPROM write function Switching off the power supply can result in loss of the parameter assignment 4 SCAN SCAN function is running and must be completed 3 Self test command 41 The device self test is executed as when the power supply is switched on if no error occurs the Malfunction ...

Page 57: ...values Commands are only supported for compatibility purposes and are without any meaning Used with transmitters e g SCAN function they have the following meanings 1 Read primary variable 2 Read primary variable as current in mA and percent of range 3 Read primary variable as current in mA and four predefined dynamic variables 2 3 6 Write polling address This command is never accepted and the mess...

Page 58: ...out of the Multiplexer 129 Read loop status With this command the status of the current loop can be read out The following information is supplied Hardware fault Rebuild running for this loop SCAN activated for this loop Searching transmitter due to disappeared Transmitter not responding disappeared Transmitter responding again appeared An other transmitter responded instead mismatched 130 Read tr...

Page 59: ...s Reset the communication statistic 144 Read retry limits Retries in case of Busy 0 11 default is 0 Retries in case of communication errors 0 11 default is 2 145 Write retry limits 146 Read the selected SCAN command During SCAN the HART commands 1 2 or 3 see above can be executed 147 Select SCAN command 148 Read SCAN status With these commands the status of the SCAN function is set or read respect...

Page 60: ...able data bytes The data bytes itself if any 159 Write special SCAN parameters For the given current loop and polling address has to be 0 the threshold data length 0 62 and the SCAN command to be used can be written 160 Read loop switch delay When the Multiplexer switches the communication channel loop 0 255 it can insert a delay time 0 ms 300 ms before any HART commands are sent to the loop 161 W...

Page 61: ... Communication Foundation HART SMART Communications Protocol Specification HCF SPEC 11 Revision 5 9 www hartcomm org 2 HART Communication Foundation HART Application Guide HCF LIT 34 www hartcomm org 3 Romilly Bowden Fisher Rosemount HART A technical Overview August 1997 Fisher Rosemount ...

Page 62: ...e devices only respond to requests received Multidrop In contrast to point to point more than two field devices are connected together to one segment pair of wires in a multidrop system To correspond to each singe device it must have a unique address Because communication can only be established to one field device cycle times are increasing proportional to the number of field devices In HART mult...

Page 63: ... e g transmitter or valve in a Master Slave system that receives commands from a Master device A Slave is not able to initiate a transaction Smart field device Microprocessor based device that can be programmed has memory is capable of performing calculations and self diagnostics and reporting faults and can be communicated with from a remote location Tag Unique tag designation of the control engi...

Page 64: ...erl fuchs com Worldwide Headquarters Pepperl Fuchs GmbH 68307 Mannheim Germany Tel 49 621 776 0 E mail info de pepperl fuchs com For the Pepperl Fuchs representative closest to you check www pepperl fuchs com contact PROCESS AUTOMATION PROTECTING YOUR PROCESS DOCT 0120D 06 2014 ...

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