Handleiding Emerson 848L Satellite Radio

Samenvatting van de inhoud op de volgende paginas van de handleiding

Pagina 1

www .rosemount.com Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L Logic T ransmitter with F OUNDATION ™ Fieldbus P r o d u c t D i s c o n t i n u e d.
Pagina 2

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Rosemount 848L Discrete Logic T emperature T ransmitter with F OUNDATION Fieldbus Cover photo: 848-848C004 NOTICE Read this manual before working with the product.
Pagina 3

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com T able of Content s SECTION 1 Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Warnings .
Pagina 4

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L TOC -2 SECTION 4 Operation and Maintenance Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Warnings . . . . . . . . . .
Pagina 5

Reference Manual 00809-0100-4696, Rev AA September 2004 TOC -3 Rosemount 848L APPENDIX D Logic Equation Syntax Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4 Examples . . . . . . . . . .
Pagina 6

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L TOC -4.
Pagina 7

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Section 1 Introduction Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 1- 1 Overview . . . . . . . . . . . . . . . . . . .
Pagina 8

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 1-2 OVERVIEW T ransmitter The 848L provides a cost effective field mounted interface for discrete input s and outputs on a Foundat ion Fieldbus H1 network.
Pagina 9

Reference Manual 00809-0100-4696, Rev AA September 2004 1-3 Rosemount 848L Appendix A: S pecification and Reference Data • S pecifications • Dimensional Drawings • Ordering Information Appendix .
Pagina 10

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 1-4.
Pagina 11

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Section 2 Inst allation Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2-1 Mounting . . . . . . . . . . . . . . . . . . .
Pagina 12

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 2-2 Mounting to a DIN Rail Without an Enclosure T o mount the 848L to a DIN rail without an enclosure, follow these steps: 1. Pull up the DIN rail mounting clip located on the top back side of the transmitter .
Pagina 13

Reference Manual 00809-0100-4696, Rev AA September 2004 2-3 Rosemount 848L Mounting to a 2-Inch Pipe St and Use the optional mounting bracket (option code B6) to mount the 848L to a 2-inch pipe stand when using a junction box.
Pagina 14

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 2-4 WIRING If the device or sensors are installed in a high-voltage environment and a fault condition or installation error occurs, the sensor leads and transmitter terminals could carry lethal voltages.
Pagina 15

Reference Manual 00809-0100-4696, Rev AA September 2004 2-5 Rosemount 848L Figure 2-4. “Bus” location on the Rosemount 848L Input/Output Power: The discrete I/O requires a 9-32VDC powe r supply that is separate from the fieldbus power . The voltage level will depend on the type of sensors being used and outputs being dr iven.
Pagina 16

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 2-6 Security After configuring the transmitter , the data can be protected from unwarranted changes. Each 848L is equipped with a security switch that can be positioned “ON” to prevent the accidental or deliberate change of configuration dat a.
Pagina 17

Reference Manual 00809-0100-4696, Rev AA September 2004 2-7 Rosemount 848L I/O WIRING 848/848L/848L_10_AA, 84 8L_1 1_AA, 848L_12_AA , 848L_13_AA, 848L_14_AA.
Pagina 18

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 2-8 T AGGING Commissioning T ag The 848L is supplied with a removable commissioning tag that cont ains both the Device ID (the un.
Pagina 19

Reference Manual 00809-0100-4696, Rev AA September 2004 2-9 Rosemount 848L T RANSMITTER LABEL Figure 2-7. T ransmitter Label INST ALLATION Using Cable Glands Use the following steps to inst all the 848L with Cable Glands: 1. Remove the junction box cover by unscrewing the four cover screws.
Pagina 20

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 2-10 Using Conduit Entries Use the following steps to inst all the 848L with Conduit Entries: 1. Remove the junction box cover by unscrewing the four cover screws. 2. Remove the five conduit plugs a nd install five conduit fittings (supplied by the installer).
Pagina 21

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Section 3 Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3-1 Safety Messages . . . . . . . . . . . . .
Pagina 22

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-2 GENERAL BLOCK INFORMATION Modes The Resource, T ransducer , and all functi on blocks in the device have modes of operation. These modes govern the o peration of the block. Every block supports both automatic (AUT O) and out of service (OOS) modes.
Pagina 23

Reference Manual 00809-0100-4696, Rev AA September 2004 3-3 Rosemount 848L Link Active Scheduler The Rosemount 848L can be designated to act as the backup Link Active Scheduler (LAS) in the event that the LAS is disconnected from the segment.
Pagina 24

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-4 Cap abilities Virtual Communication Relationship (VCRs) There are a total of 20 VCRs. T wo are permanent and 18 are fully configurable by the host system. 25 link objects are available.
Pagina 25

Reference Manual 00809-0100-4696, Rev AA September 2004 3-5 Rosemount 848L SOFT WRITE LOCK and HARD WRITE LOCK Inputs to the security and write lock f unctions include the hardware security switch, the hardware and software write lock bit s of the FEA TURE_SEL parameter , the WRITE_LOCK parame ter , and the DEFINE_WRITE_LOCK para m ete r .
Pagina 26

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-6 PlantWeb ™ Alarms The Resource Block will act as a coordinator for PlantWeb alarms.
Pagina 27

Reference Manual 00809-0100-4696, Rev AA September 2004 3-7 Rosemount 848L MAINT_ALARMS A maintenance alarm indicates the device or some part of the device needs maintenance soon. If the condition is ignored, the device will eventually fail. There are five parameters associ ated with MAINT_ALARMS, they are described below .
Pagina 28

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-8 ADVISE_ACTIVE The ADVISE_ACTIVE parameter displays which of the advisories is active. Only the advisory with the highe st priority will be displayed. This priority is not the same as the ADVISE_PRI parameter described above.
Pagina 29

Reference Manual 00809-0100-4696, Rev AA September 2004 3-9 Rosemount 848L Alarms Use the following steps to configure the alarms, which are located in the Resource Block. 1. Set the resource blo ck to OOS. 2. Set WRITE_PRI to the appropriat e alarm level (WRITE_PRI has a selectable range of priorities from 0 to 15.
Pagina 30

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-10 The 848L can force the outputs to a pred etermined state in the event of a device malfunction. The following procedure can be used to set the fail safe condition for each output: 1.
Pagina 31

Reference Manual 00809-0100-4696, Rev AA September 2004 3-1 1 Rosemount 848L Figure 3-1. 848L Logic T ransmitter Data Flow Logic T ransducer Block H a rdwa re I nputs H a rdwa re O utput s IN_1 IN_2 I.
Pagina 32

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-12 The following characters are allowed in a logic equation: • Uppercase and lowercase alphabet, case insensitive, used to sp.
Pagina 33

Reference Manual 00809-0100-4696, Rev AA September 2004 3-13 Rosemount 848L PS - When the hardware input consists of a continuous train of pulses at a rate less than 500 PPS, a prescaler can be used to reduce the pulse rate to something that does not change faster than the equation evaluation rate.
Pagina 34

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-14 EQ - Channels 17-32 are set by the result of an equation specified by up to 80 characters and stored in parameter EQx, where x is the equation number . The equation results are available as a discrete value and st atus in parameter EQx_V ALUE.
Pagina 35

Reference Manual 00809-0100-4696, Rev AA September 2004 3-15 Rosemount 848L Logic Functions A function has a name and a set of one or more arguments cont ained within a closed set of parentheses. The seven channel reference functions (IN, ICF , ICR, PS, DO, EQ, and OUT) have been described above.
Pagina 36

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-16 Logic Operator Functions The following combinatorial operators require a minimum of 2 and a maximum of 10 functions between the parentheses, each separated by a comma. AND ( ) - Performs the logical ‘and’ of the argument functions.
Pagina 37

Reference Manual 00809-0100-4696, Rev AA September 2004 3-17 Rosemount 848L Counter Functions CTU (clock, reset, t arget)- The parameters clock and reset are functions. The target is a 16 bit const ant. Whenever reset is true, the internal counter is set to zero and the value of the function is false.
Pagina 38

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-18 TP (power , target) - Whenever power transi tions from false to true, the value of the internal timer is set to the tar get and the value of the function is true. The value of the function will become fals e after the t arget amount of time has elapsed.
Pagina 39

Reference Manual 00809-0100-4696, Rev AA September 2004 3-19 Rosemount 848L SHR (input, shift, reset, testbit) - The parameters input, shift and reset are functions. The parameter testbit is a const ant that is constrained to be in the range of 1 to 8.
Pagina 40

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-20 Logic Execution T iming The Logic transducer block reads t he hardware inputs, processes the equations and drives the outputs on a continuous cycle.
Pagina 41

Reference Manual 00809-0100-4696, Rev AA September 2004 3-21 Rosemount 848L Simulation Simulation replaces the channel value coming from the transducer block for testing purposes. The following procedure is us ed to simulate a DI output. T o change the output value place the T a rget Mode of th e block to Manual and then change the OUT_D.
Pagina 42

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L 3-22.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Section 4 Operation and Maintenance Safety Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4-1 Foundation Fieldbus Information . .
Pagina 44

Reference Manual 000809-0100-4696, Rev AA September 2004 Rosemount 848L 4-2 Commissioning (Addressing) T o be able to setup, configure, and h ave a device communicate with other devices on a segment, a device mu st be assigned a permanent address. Unless requested otherwise, it is assigned a temporary address when shipped from the factory .
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Reference Manual 00809-0100-4696, Rev AA September 2004 4-3 Rosemount 848L T ROUBLESHOOTING F OUNDATION Fieldbus Resource Block I/O T ransducer and Logic Block T roubleshooting NAMUR Sensors Symptom P.
Pagina 46

Reference Manual 00809-0100-4696, Rev AA September 2004 4-4 Rosemount 848L.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix A Reference Dat a Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page A-1 Dimensional Drawings . . . . . . . . . .
Pagina 48

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L A-2 Output s 4 Discrete Outputs 9-32 VDC loads Maximum load inductance 300 mH Current Ratings: 1.0 A maximum for single channel on, 4.0 A maximum per device. Output devices must be selected as follows: 1.
Pagina 49

Reference Manual 00809-0100-4696, Rev AA September 2004 A-3 Rosemount 848L Isolation Input-Output 1200 VDC; 600 V rms 50/60 Hz for dry and 2-wire NAMUR contact input s No isolation when using 3-wire s.
Pagina 50

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L A-4 Physical Specifications Environment al Ratings Electronics (no enclosure) -40°C to +85°C 99% non-condensing humidity IP20 U.
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Reference Manual 00809-0100-4696, Rev AA September 2004 A-5 Rosemount 848L EXAMPLE FOR THE LOGIC EXECUTION: This diagram shows motor starter logi c with st art and stop buttons and an auxiliary contact which maint ains current after the start button is pressed.
Pagina 52

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L A-6 Figure A-3. Rosemount 848L Wiring Diagram 848/848L/848L_10_AA, 848L_1 1_AA, 848L_12_AA, 848L _13_AA, 848L_14_AA.
Pagina 53

Reference Manual 00809-0100-4696, Rev AA September 2004 A-7 Rosemount 848L ORDERING INFORMATION Model Product Description (Includes One Fieldbus H1 Segment) 848L Fieldbus Logic T ransmitter Code Commu.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L A-8.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix B Product Certifications Approved Manufacturing Locations . . . . . . . . . . . . . . . . . page B-1 European Directive Informat ion . . . . . . . . . .
Pagina 56

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L B-2 European Approvals CENELEC Approvals N1 CENELEC T ype n Certification Number: Baseefa04A TEX0027X A TEX Marking II 3 G EEx nA nL IIC T4 (T amb = –40°C to 50°C) Power/Bus Max Supply V oltage = 32.
Pagina 57

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix C Function Blocks Resource Block Parameters . . . . . . . . . . . . . . . . . . . . . . . page C-1 I/O T ransducer Parameters . . . . . . . . . . . . . .
Pagina 58

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-2 23 NV_ CYCLE_T Minimum time interval specif ied by the manufacturer for writing copies of NV parameters to non-volatile memory . Zero means it will never be automatically copied.
Pagina 59

Reference Manual 00809-0100-4696, Rev AA September 2004 C-3 Rosemount 848L 53 OUTPUT_ BOARD_ SN Output board serial number . 54 FINAL_ ASSY_ NUM The same final assembly number specified or set by the customer . 55 DET AILED_ ST A TUS Indicates the state of the transmitter .
Pagina 60

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-4 80 ADVISE_ ENABLE Enabled ADVISE_ ALM alarm conditio ns. Corresponds bit for bit to AD VISE_ ACTIVE. A bit on means that the corresponding alarm condition is enabled and wi ll be detected.
Pagina 61

Reference Manual 00809-0100-4696, Rev AA September 2004 C-5 Rosemount 848L I/O T RANSDUCER PARAMETERS T able C-2. I/O Transducer Parameters Numbe r Parameter Description 1 ST_ REV The revision level of the static data associated with the function block.
Pagina 62

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-6 29 TRANSDUCER_ TYPE_ 2 Identifies the transducer that follows. 30 XD_ ERROR_ 2 One of the error codes defined in FF-9 03 XD_ ERROR and Block Alarm Subcodes.
Pagina 63

Reference Manual 00809-0100-4696, Rev AA September 2004 C-7 Rosemount 848L 57 OUT_ 3_ T AG An identifier asso ciated with discrete output 3. 58 OUT3 The value and status of discrete Output 3. 59 OUT_ 3_ CONFIG .IO_TYPE The transducer type of discrete sensor 1 1.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-8 LOGIC T RANSDUCER PARAMETERS T able C-3. Logic Transducer Parameters and Descriptions Number Parameter Description 1 ST_ REV The revision level of the static data associated with the function block.
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Reference Manual 00809-0100-4696, Rev AA September 2004 C-9 Rosemount 848L DISCRETE INPUT BLOCK The DI takes the manu facturer ’s discrete input dat a, selected by channel number , and makes it available to other function blocks as its output. The output will have a value of either true or false along with the status of the output.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-10 T able C-4. Parameters Index Parameter 1S T _ R E V 2 T AG_DESC 3S T R A T E G Y 4 ALERT_KEY 5 MODE_BLK 6 BLOCK_ERR 7P V _ D.
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Reference Manual 00809-0100-4696, Rev AA September 2004 C-1 1 Rosemount 848L DISCRETE OUTPUT BLOCK The DO block makes the value sent in SP_D, CAS_IN_D, or RCAS_IN_D available for processing by the device. The CHANNEL selection determines where the value is stored in the 848L.
Pagina 68

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-12 T able C-5. Parameters MULTIPLE DISCRETE INPUT BLOCKS The MDI block makes available for the FF network eight discrete variab.
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Reference Manual 00809-0100-4696, Rev AA September 2004 C-13 Rosemount 848L T able C-6. Parameters and Description MULTIPLE DISCRETE OUTPUT BLOCK The MDO block makes available to the I/O subsystem its eight input parameters IN_D1/8. This function block keeps the fault st ate features specified for the DO block.
Pagina 70

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L C-14 T able C-7. Parameters and Description IN_D3 BLOCK ALGORITHM CHANNEL OUTPUT SNAP OF TRANSDUCER BLOCK INPUTS IN_D4 IN_D5 IN_D6 IN_D7 IN_D8 IN_D1 IN_D2 848/848L/DISCRETE3.
Pagina 71

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix D Logic Equation Synt ax Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page D-4 Examples . . . . . . . . . . . . .
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L D-2 T able D-1. Supported Functions Function Name Required number of parameters Maximum number of parameters Function Description Maximum Instances AND 2 10 AND (a, b,...); This function's result will be the logical and of a, b,.
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Reference Manual 00809-0100-4696, Rev AA September 2004 D-3 Rosemount 848L PS 2 2 PS (channel number , divisor); This function is a frequency pr escaler . This function's value will be true for 1 execution cycle each time the requested device input has had 'divisor' pulses.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L D-4 ERROR HANDLING The syntax of the entered equation is p arsed when the target mode transitions from OOS to AUTO.
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Reference Manual 00809-0100-4696, Rev AA September 2004 D-5 Rosemount 848L EXAMPLES T ake value of input 1 and put it on output 3.... Set OUT3_EQ to: IN(1); For every transition (in both directions) on input 5, send a 200 msec pulse out on output 2, but only if inpu t 2 is low .
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L D-6.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix E Motor Control Introduction to Moto r Control . . . . . . . . . . . . . . . . . . . . . . p age E-1 V ariations on Motor Control . . . . . . . . . . . .
Pagina 78

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-2 The contactor is never controlled with a toggle switch, because that would leave one side of the solenoid electrically hot when the motor overload trips. S tandard procedure calls for st art and st op push buttons in combination with an auxiliary contact on the cont actor .
Pagina 79

Reference Manual 00809-0100-4696, Rev AA September 2004 E-3 Rosemount 848L Rest art Delay A motor may be used in a condition wher e starting is dif ficult, causing the motor to heat rapidly until it gets r unning. That heat must be allowed to dissipate before the motor is st arted a gain.
Pagina 80

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-4 Timed Switch The pumps have a known life time within an accept able risk, so one pump is allowed to run until that time expires. The other pump automatically takes over at that time.
Pagina 81

Reference Manual 00809-0100-4696, Rev AA September 2004 E-5 Rosemount 848L Interlock An interlock switch is easily added as follows, where input 4 is the normally closed interlock: | | | 1 2 4 Out1 | .
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-6 Rest art Delay An off delay timer is required as a permissive for st arting the motor . When the motor is started, the of f delay contact opens the circuit for the start button and keeps it open for a specified time.
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Reference Manual 00809-0100-4696, Rev AA September 2004 E-7 Rosemount 848L Maximum Rest arts A large motor is too expensive to replace if it burns up because the operator wanted to give it another try , when in fact the pump was jammed. The life of the contactor is also shortened when it has to interrupt locked rotor current.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-8 Winding T emperature The multi-rung delay mechanism above may be replaced if the motor has a winding temperature sensor and a conv ertor that opens a contact when the motor is too hot and closes when it is sufficiently cool.
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Reference Manual 00809-0100-4696, Rev AA September 2004 E-9 Rosemount 848L Hand-Off-Auto The HOA switch has one contact that is closed in the Hand position (input 1) and one contact that is clos ed in the Auto position (input 2). Both contact s are open in the Off position.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-10 Intermediate Stop A reversible motor requires two contac tors. One of them swap s two of the motor wires so that it will run in the opposite direction.
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Reference Manual 00809-0100-4696, Rev AA September 2004 E-1 1 Rosemount 848L Redundant Motors - Alternate St art T wo motors drive two pumps in a redundant configuration. The control valve that follows the pumps will just waste the energy of the second pump, possibly damaging the valve, if both pumps on at the same time.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-12 Redundant Motors - Timed Switch Again, redundant pumps are used but on ly one pump runs at a time. The process runs for years without being shut down. The switch between pumps occurs at a time near the end of the useful life of the pump, usually several thousand hours.
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Reference Manual 00809-0100-4696, Rev AA September 2004 E-13 Rosemount 848L Rung L1 is equation 1. It latches on when the start button is true and unlatches when the NC stop button is pushed. The latch remembers start and stop commands to simplify the logic.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-14 Redundant Motors - Switch on Failure Again, there are redundant pumps. There is a pressure switch in the common discharge line. If the pressure falls then the other pump is started.
Pagina 91

Reference Manual 00809-0100-4696, Rev AA September 2004 E-15 Rosemount 848L Rung L1 is equation 1. It latches on when the start button is true and neither motor is running. It unlatches when the NC stop button is pushed or the pressure stays low for too long.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L E-16.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L www .rosemount.com Appendix F V alve Control Introduction to V alve Contro l . . . . . . . . . . . . . . . . . . . . . . page F-1 INTRODUCTION TO V ALVE CONTROL Industrial valves have two general classifications, regulating and block.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L F-2 There are at least three permu tations of any valve circuit: 1. S teady or pulse output to the pilot solenoid (or whatever , piezoelectric bars are in use). S teady requires one output, pulse requires two.
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Reference Manual 00809-0100-4696, Rev AA September 2004 F-3 Rosemount 848L Double Block and Bleed If the valve absolutely must not leak into the process, then two valves are put in series and the short pipe between them is vented (bled) to an appropriate place.
Pagina 96

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L F-4 Open-Auto-Close Those applications that use a local swit ch with automatic control have a three position switch arranged as Open-Auto -Close. Inputs 1 and 2 are used for confirms, so input 3 is used for Open and input 4 for Closed.
Pagina 97

Reference Manual 00809-0100-4696, Rev AA September 2004 F-5 Rosemount 848L Simple V alve V ariations A spring return valve with one close confirm: EQ1 contains TON(OR(AND(NOT(DO(1)),NOT(IN(2))),AND(DO.
Pagina 98

Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L F-6 Double Block and Bleed Certain materials must not leak through a valve that is supposed to be shut. Three valves are arranged in a leak-proof configuration as shown: All three valves are spring return.
Pagina 99

Reference Manual 00809-0100-4696, Rev AA September 2004 F-7 Rosemount 848L Motorized V alve The motor runs forward to open the va lve and reverse to close it. When the motor is off, the valve cannot move. Bo th confirms are required. Output 1 causes the motor to run forward, Output 2 is reverse.
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Reference Manual 00809-0100-4696, Rev AA September 2004 Rosemount 848L F-8.
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Reference Manual 00809-0100-4696, Rev AA 9/17/04 Rosemount 848L www .rosemount.com Inde x Numerics 2-Inch Pipe S tand Mounting . . . . . . . . . . . . . . . . . . 2-3 A ADVISE_ACTIVE . . . . . . . . . . . . . 3-8 ADVISE_ALM . . . . . . . . . . . . . .
Pagina 102

Reference Manual 00809-0100-4696, Rev AA 9/17/04 Rosemount 848L Index-2 H Hardware Maintenance . . . . . . . . . . . . . . . 4-2 Communication Check . . . . 4-2 Power Check . . . . . . . . . . . 4-2 Reset Configuration . . . . . . 4-2 Sensor Check . .
Pagina 103

Reference Manual 00809-0100-4696, Rev AA 9/17/04 Index-3 Rosemount 848L T T agging . . . . . . . . . . . . . . . . . . . . . 2-8 Commissioning . . . . . . . . . . . . . 2-8 Sensor . . . . . . . . . . . . . . . . . . . 2-8 T ransmitter . . . . . . . . .
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Reference Manual 00809-0100-4696, Rev AA 9/17/04 Rosemount 848L Index-4.
Pagina 105

Emerson Process Management © 2004 Rosemount Inc. All rights reserved. ¢00809-0100-4697F¤ Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc. PlantWeb is a registered trademark of one of t he Emerson Process Management group of comp anies.

Lees een handleiding Emerson 848L - vermijd mogelijke problemen

Een belangrijk punt na aankoop van elk apparaat Emerson 848L (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:

om te weten hoe het apparaat juist te gebruiken
om te weten, hoe het product te onderhouden/het uitvoeren van periodieke keuringen Emerson 848L
om te weten hoe de mogelijke storingen te verwijderen Emerson 848L

Als u nog geen Emerson 848L heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Emerson 848L vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Emerson 848L leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Emerson 848L krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.

In een situatie waarin je al een beziter van Emerson 848L bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Emerson 848L kunnen verkorten.

Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Emerson 848L . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.

Emerson 848L handleiding

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Vergelijkbare instructies

Deel URL

Vergelijkbare instructies

Samenvatting van de inhoud op de volgende paginas van de handleiding

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