Endress+Hauser CNGmass DCI Operating Instructions Manual
Endress+Hauser CNGmass DCI Operating Instructions Manual

Endress+Hauser CNGmass DCI Operating Instructions Manual

Coriolis mass flow measuring system for fueling with compressed natural gas (cng)
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Operating Instructions
CNGmass DCI
MODBUS RS485
Coriolis mass flow measuring system
For fueling with compressed natural gas (CNG)
BA140D/06/en/10.09
71100107
valid as of version
V 3.06.00 (Device software)

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Summary of Contents for Endress+Hauser CNGmass DCI

  • Page 1 Operating Instructions CNGmass DCI MODBUS RS485 Coriolis mass flow measuring system For fueling with compressed natural gas (CNG) BA140D/06/en/10.09 71100107 valid as of version V 3.06.00 (Device software)
  • Page 3: Table Of Contents

    CNGmass DCI MODBUS RS485 Table of contents Table of contents Safety instructions ....5 Brief guide to the function matrix ....27 5.3.1...
  • Page 4 CNGmass DCI MODBUS RS485 Table of contents Maintenance ....66 External cleaning ......66 Accessories .
  • Page 5: Safety Instructions

    Strict compliance with the instructions in the Operating Instructions is mandatory. • The CNGmass DCI is a device for measuring gas under high pressure. Therefore, professional design of the system and proper installation of all pressure-bearing parts is of vital importance for long-term safe operation.
  • Page 6: Return

    Endress+Hauser: • Always enclose a duly completed "Declaration of Contamination" form. Only then can Endress+Hauser transport, examine and repair a returned device. • Enclose special handling instructions if necessary, for example a safety data sheet as per Regulation (EC) 1907/2006 REACH.
  • Page 7: Identification

    CNGmass DCI MODBUS RS485 Identification Identification Device designation The "CNGmass DCI" flow measuring system consists of the following components: • Transmitter • Sensor Two versions are available: • Compact version: transmitter and sensor form a single mechanical unit. • Remote version: transmitter and sensor are installed separately.
  • Page 8: Nameplate Of The Sensor

    Identification CNGmass DCI MODBUS RS485 2.1.2 Nameplate of the sensor 4153 Reinach Switzerland PROMASS FP (CNGmass DCI) 8DF15-XXXXXXXXXXXX Order Code: 12345678901 2009 Ser. No.: ABCDEFGHJKLMNPQRST Ident No.: 1.0000 / -5 5P-CAL K-factor: 350bar / 5080psi (gauge) pnom = DN 15 - G3/4”...
  • Page 9: Nameplate For Connections

    CNGmass DCI MODBUS RS485 Identification 2.1.4 Nameplate for connections active See operating manual passive Betriebsanleitung beachten normally open contact Observer manuel d'instruction normally closed contact XXXXXXXXXXX Ser.No.: L1/L+ Supply / Versorgung / N/L- Tension d'alimentation 26 = B (RxD/TxD-P) 27 = A (RxD/TxD-N) MODBUS RS485 3…30VDC, Ri = 3 kOhm...
  • Page 10: Additional Sign - Position Of The Rupture Disk

    EMC requirements of IEC/EN 61326. The measuring system described in these Operating Instructions thus complies with the statutory requirements of the EC Directives. Endress+Hauser confirms successful testing of the device by affixing to it the CE mark.
  • Page 11: Installation

    CNGmass DCI MODBUS RS485 Installation Installation Incoming acceptance, transport and storage 3.1.1 Incoming acceptance On receipt of the goods, check the following points: • Is the packaging or content damaged? • Is anything missing from the shipment and does the scope of supply match your order? 3.1.2...
  • Page 12: Installation Instructions

    Installation CNGmass DCI MODBUS RS485 Installation instructions 3.3.1 Turning the transmitter housing Turning the aluminum field housing Warning! The turning mechanism in devices with EEx d/de or NEC/CEC Cl. I Div. 1 classification is not the same as that described here. The procedure for turning these housings is described in the Ex-specific documentation.
  • Page 13: Installing The Wall-Mount Housing

    CNGmass DCI MODBUS RS485 Installation 3.3.2 Installing the wall-mount housing There are various ways of installing the wall-mount housing: • Mounted directly on the wall • Installation in control panel (separate mounting set, accessories) → ä 14 • Pipe mounting (separate mounting set, accessories) → ä 14 "...
  • Page 14 Installation CNGmass DCI MODBUS RS485 Installation in control panel Prepare the opening in the panel → å 8. Slide the housing into the opening in the panel from the front. Screw the fasteners onto the wall-mount housing. Screw the threaded rods into the holders and tighten them until the housing is secured on the panel wall.
  • Page 15: Turning The Local Display

    CNGmass DCI MODBUS RS485 Installation 3.3.3 Turning the local display Unscrew cover of the electronics compartment from the transmitter housing. Press the side latches on the display module and remove the module from the electronics compartment cover plate. Rotate the display to the desired position (max. 4 × 45 ° in both directions), and reset it onto the electronics compartment cover plate.
  • Page 16: Wiring

    Wiring Warning! When connecting Ex-certified devices, see the notes and diagrams in the Ex-specific supplement to these Operating Instructions. Please do not hesitate to contact your Endress+Hauser sales office if you have any questions. Note! The measuring device does not have an internal disconnecting device. Therefore, assign a switch or circuit breaker to the measuring device with which the voltage supply line can be disconnected from the power system.
  • Page 17: Shielding And Grounding

    CNGmass DCI MODBUS RS485 Wiring 4.1.1 Shielding and grounding When planning the shielding and grounding for a fieldbus system, there are three important points to consider: • Electromagnetic compatibility (EMC) • Explosion protection • Employee safety To ensure the optimum electromagnetic compatibility of systems, it is important that the system components and above all the cables, which connect the components, are shielded and that no portion of the system is unshielded.
  • Page 18: Connecting The Remote Version

    Wiring CNGmass DCI MODBUS RS485 Connecting the remote version 4.2.1 Connecting cable for sensor/transmitter Warning! • Risk of electric shock. Switch off the power supply before opening the device. Do not install or wire the device while it is connected to the power supply.
  • Page 19: Connecting The Measuring Unit

    CNGmass DCI MODBUS RS485 Wiring Connecting the measuring unit 4.3.1 Transmitter connection Warning! • Risk of electric shock. Switch off the power supply before opening the device. Do not install or wire the device while it is connected to the power supply.
  • Page 20 Wiring CNGmass DCI MODBUS RS485 (L–) B (RxD/TxD-P) (L+) A (RxD/TxD-N) A (RxD/TxD-N) B (RxD/TxD-P) + – + – + – – 24 25 26 27 20 21 22 23 – – N (L-) L1 (L+) A0002591 Fig. 12: Connecting the transmitter, cable cross-section: max. 2.5 mm...
  • Page 21: Terminal Assignment

    CNGmass DCI MODBUS RS485 Wiring 4.3.2 Terminal assignment Electrical values for inputs → ä 84. Electrical values for outputs → ä 85. Terminal No. (inputs/outputs) Order version 20 (+) / 21 (-) 22 (+) / 23 (-) 24 (+) / 25 (-) 26 (+) / 27 (–)
  • Page 22: Post-Connection Check

    Wiring CNGmass DCI MODBUS RS485 Post-connection check Perform the following checks after completing electrical installation of the measuring device: Device condition and specifications Notes Are cables or the device damaged (visual inspection)? – Electrical connection Notes Does the supply voltage match the specifications on the nameplate?
  • Page 23: Operation

    CNGmass DCI MODBUS RS485 Operation Operation Quick operation guide You have a number of options for configuring and commissioning the device: Local display (option) → ä 24 The local display enables you to read all important variables directly at the measuring point, configure bus-specific and device-specific parameters in the field and perform commissioning.
  • Page 24: Display And Operating Elements

    Operation CNGmass DCI MODBUS RS485 Display and operating elements The local display enables you to read all important parameters directly at the measuring point and configure the device using the "Quick Setup" or the function matrix. The display consists of four lines; this is where measured values and/or status variables (direction of flow, empty pipe, bar graph etc.) are displayed.
  • Page 25: Readings Displayed (Operation Mode)

    CNGmass DCI MODBUS RS485 Operation 5.2.1 Readings displayed (operation mode) The display area consists of three lines in all; this is where measured values are displayed, and/or status variables (direction of flow, bar graph etc.). You can change the assignment of display lines to different variables to suit your needs and preferences (È...
  • Page 26: Icons

    Operation CNGmass DCI MODBUS RS485 5.2.3 Icons The icons which appear in the field on the left make it easier to read and recognize measured variables, device status, and error messages. Icon Meaning Icon Meaning System error Process error Fault message...
  • Page 27: Brief Guide To The Function Matrix

    CNGmass DCI MODBUS RS485 Operation Brief guide to the function matrix Note! • See the general notes → ä 28 • Function descriptions → see the "Description of Device Parameters" manual HOME position → F → Entry into the function matrix Select a block (e.g.
  • Page 28: General Notes

    • If programming is disabled and the P operating elements are pressed in any function, a prompt for the code automatically appears on the display. • If "0" is entered as the customer's code, programming is always enabled! • Your Endress+Hauser representative can be of assistance if you mislay your personal code. " Caution! Changing certain parameters such as all sensor characteristics, for example, influences numerous functions of the entire measuring system, particularly measuring accuracy.
  • Page 29: Error Messages

    CNGmass DCI MODBUS RS485 Operation Error messages 5.4.1 Type of error Errors that occur during commissioning or measuring are displayed immediately. If two or more system or process errors occur, the error with the highest priority is the one shown on the display.
  • Page 30: Confirming Error Messages

    Operation CNGmass DCI MODBUS RS485 5.4.3 Confirming error messages For the sake of plant and process safety, the measuring device can be configured in such a way that fault messages displayed ($) always have to be rectified and acknowledged locally by pressing F.
  • Page 31 CNGmass DCI MODBUS RS485 Operation Master/slave communication A distinction is made between two methods of communication with regard to master/slave communication via MODBUS RS485: • Polling (request-response-transaction) The master sends a request telegram to one slave and waits for the slave's response telegram.
  • Page 32: Modbus Telegram

    Operation CNGmass DCI MODBUS RS485 5.5.2 MODBUS telegram General The master-slave process is used for data exchange. Only the master can initiate data transmission. Following the prompt, the slave sends the master the necessary data as a response telegram or executes the command requested by the master.
  • Page 33: Modbus Function Codes

    CNGmass DCI MODBUS RS485 Operation 5.5.3 MODBUS function codes The function code determines which read, write and test operations should be executed by means of the MODBUS protocol. The measuring device supports the following function codes: Function Name in accordance...
  • Page 34: Modbus Register Addresses

    Operation CNGmass DCI MODBUS RS485 5.5.5 MODBUS register addresses Each device parameter has its own register address. The MODBUS master uses this register address to talk to the individual device parameters and access the device data. The register addresses of the individual device parameters can be found in the "Description of Device Parameters"...
  • Page 35 CNGmass DCI MODBUS RS485 Operation Data types The following data types are supported by the measuring device: • FLOAT (floating-point numbers IEEE 754) Data length = 4 bytes (2 registers) Byte 3 Byte 2 Byte 1 Byte 0 SEEEEEEE EMMMMMMM...
  • Page 36: Modbus Error Messages

    Operation CNGmass DCI MODBUS RS485 INTEGER: Sequence Selection 1 – 0 – 3 – 2 * Byte 1 Byte 0 3 – 2 – 1 – 0 (MSB) (LSB) 0 – 1 – 2 – 3 Byte 0 Byte 1 2 –...
  • Page 37: Modbus Auto-Scan Buffer

    CNGmass DCI MODBUS RS485 Operation 5.5.7 MODBUS auto-scan buffer Function description The MODBUS master uses the request telegram to access the device parameters (data) of the measuring device. Depending on the function code, the master gains read or write access to a single device parameter or a group of consecutive device parameters.
  • Page 38 Operation CNGmass DCI MODBUS RS485 Scan list MODBUS configuration Configuration via Register address local operation / configuration program (BASIC FUNCTION → MODBUS RS485 →) (data type = Integer) 5012 SCAN LIST REG. 12 5013 SCAN LIST REG. 13 5014 SCAN LIST REG. 14 5015 SCAN LIST REG.
  • Page 39 CNGmass DCI MODBUS RS485 Operation Response time The response time when accessing the data area (register addresses 5051 to 5081) is typically between 3 and 5 ms. Note! It may take longer for a command to be executed in the device. The data is not updated until the command has been executed.
  • Page 40 Operation CNGmass DCI MODBUS RS485 2. Access to data via MODBUS By specifying the register start address 5051 and the number of registers, the MODBUS master can read out the measured values with just one request telegram. Data area Access via MODBUS...
  • Page 41: Operating Options

    The Fieldcheck tester/simulator is used for testing flowmeters in the field. When used in conjunction with the FieldCare software package, test results can be imported into a database, printed out and used for official certification. Contact your Endress+Hauser representative for more information.
  • Page 42: Switching Hardware Write Protection On/Off

    Operation CNGmass DCI MODBUS RS485 Switching hardware write protection on/off A jumper on the I/O board provides the means of switching hardware write protection on or off. When the write protection is switched on, it is not possible to write to the device parameters via MODBUS RS485.
  • Page 43: Commissioning

    CNGmass DCI MODBUS RS485 Commissioning Commissioning Function check Make sure that all the final checks have been completed before commissioning the measuring point: • Checklist for "Post-installation check" → ä 15. • Checklist for "Post-connection check" → ä 22. Switching on the measuring device If the post-connection checks have been performed, the supply voltage can be switched on.
  • Page 44: Quick Setup

    Commissioning CNGmass DCI MODBUS RS485 Quick Setup In the case of measuring devices without a local display, the individual parameters and functions must be configured via the configuration program, e.g. FieldCare. If the measuring device is equipped with a local display, all the important device parameters for standard operation can be configured quickly and easily by means of the "Commissioning"...
  • Page 45 CNGmass DCI MODBUS RS485 Commissioning 1002 Quick Setup XXX.XXX.XX Setup Inbetriebnahme 2000 Sprache HOME POSITION Einstellvorgaben Auswahl der Einstellvorgaben Werksauslieferung Aktuelle Einstellung Auswahl der Systemeinheit Temperatur Massefluss Volumenfluss Normvol.-fluss Dichte Beenden 0400 0402 0404 0420 0422 Einheit Einheit Einheit Einheit...
  • Page 46: Quick Setup "Pulsating Flow

    Commissioning CNGmass DCI MODBUS RS485 6.3.2 Quick Setup "Pulsating Flow" Note! The "Pulsating Flow" Quick Setup is only available if the device has a current output or a pulse/ frequency output. Certain types of pump such as reciprocating, peristaltic and cam-type pumps, for example, create a flow characterized by severe periodic fluctuations.
  • Page 47 CNGmass DCI MODBUS RS485 Commissioning Performing the "Pulsating flow" Quick Setup This Quick Setup menu guides you systematically through the setup procedure for all the device functions that have to be parameterized and configured for measuring pulsating flows. Note that this has no effect on values configured beforehand, such as measuring range, current range or full scale value.
  • Page 48 Commissioning CNGmass DCI MODBUS RS485 Note! • The display returns to the function QUICK SETUP PULSATING FLOW (1003) if you press the Q key combination. • You can call up the Setup menu either directly from the "COMMISSIONING" Quick Setup menu or manually by means of the function QUICK SETUP PULSATING FLOW (1003).
  • Page 49: Quick Setup "Gas Measurement

    CNGmass DCI MODBUS RS485 Commissioning 6.3.3 Quick Setup "Gas measurement" The measuring device is not only suitable for measuring liquid flow. Direct mass measurement based on the Coriolis principle is also possible for measuring the flow rate of gases. Note! •...
  • Page 50 Commissioning CNGmass DCI MODBUS RS485 Quick Setup "Gas measurement" HOME position → F → MEASURED VARIABLE (A) MEASURED VARIABLE → O → QUICK SETUP (B) QUICK SETUP → N → QS-GAS MEASUREMENT (1004) Setting to be selected ( P ) Function No.
  • Page 51: Quick Setup "Communication

    CNGmass DCI MODBUS RS485 Commissioning 6.3.4 Quick Setup "Communication" To establish serial data transfer, various arrangements between the MODBUS master and MODBUS slave are required which have to be taken into consideration when configuring various functions. These functions can be configured quickly and easily by means of the "Communication" Quick Setup.
  • Page 52 Commissioning CNGmass DCI MODBUS RS485 Quick Setup "Communication" 6304 PARITY Selection depends on the "Data transfer mode" function: NONE; EVEN; UNEVEN • Available in the ASCII transfer mode * even or uneven parity bit (EVEN, UNEVEN). • Available in the RTU transfer mode * no parity bit (NONE) or even or uneven parity bit (EVEN, UNEVEN).
  • Page 53: Data Back-Up/Transfer

    CNGmass DCI MODBUS RS485 Commissioning 6.3.5 Data back-up/transfer You can use the T-DAT SAVE/LOAD function to transfer data (device parameters and settings) between the T-DAT (removable memory) and the EEPROM (device memory). This is required for the following applications: • Creating a backup: current data are transmitted from an EEPROM to the T-DAT.
  • Page 54: Configuration

    Commissioning CNGmass DCI MODBUS RS485 Configuration Warning! In the case of explosion-protected equipment, observe a cooling or discharge time of 10 minutes before opening the device. 6.4.1 Configuring the device address The device address must always be configured for a MODBUS slave. The valid device addresses are in a range from 1 to 247.
  • Page 55: Configuring The Terminating Resistors

    CNGmass DCI MODBUS RS485 Commissioning 6.4.2 Configuring the terminating resistors It is important to terminate the MODBUS RS485 line correctly at the start and end of the bus segment since impedance mismatch results in reflections on the line which can cause faulty communication transmission.
  • Page 56: Current Output: Active/Passive

    Commissioning CNGmass DCI MODBUS RS485 6.4.3 Current output: active/passive The current output is configured as "active" or "passive" by means of various jumpers on the current submodule. Warning! Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment.
  • Page 57: Pulse/Frequency Output

    CNGmass DCI MODBUS RS485 Commissioning 6.4.4 Pulse/frequency output The configuration of the pulse/frequency output with line monitoring "On" or "Off" takes place by means of various jumpers on the pulse/frequency output submodule. Warning! Risk of electric shock. Exposed components carry dangerous voltages.
  • Page 58: Relay Contacts: Normally Closed/Normally Open

    Commissioning CNGmass DCI MODBUS RS485 6.4.5 Relay contacts: Normally closed/Normally open The relay contact can be configured as normally open (NO or make) or normally closed (NC or break) contacts by means of two jumpers on the pluggable submodule. This configuration can be called up at any time with the ACTUAL STATUS RELAY (4740) function.
  • Page 59: Adjustment

    The zero point obtained in this way is printed on the nameplate. Calibration takes place under reference operating conditions → ä 86. Consequently zero point adjustment is generally not necessary for CNGmass DCI! Experience shows that the zero point adjustment is advisable only in special cases: •...
  • Page 60: Memory (Historom)

    – Repeatedly press and release the Esc key (X). Memory (HistoROM) At Endress+Hauser, the term HistoROM refers to various types of data storage modules on which process and measuring device data are stored. By unplugging and plugging such modules, device configurations can be duplicated onto other measuring devices, to cite just one example.
  • Page 61: Custody Transfer Measurement

    CNGmass DCI MODBUS RS485 Custody transfer measurement Custody transfer measurement CNGmass DCI is flowmeter that is suitable for custody transfer measurement. Suitability for custody transfer measurement, approval by the Standards Authorities, repeated calibration due to legal metrology controls Only once it has been approved by the authority for legal metrology controls may the measuring device be regarded as verified and used for applications subject to legal metrology controls.
  • Page 62: Definition Of Terms

    (repairers) the authority to mark repaired devices (repairer mark) if they have the equipment necessary for repair and adjustment and have properly trained specialist staff. Endress+Hauser is authorized to carry out repair work on verified measuring devices. Adjust Adjustment on site (zero point, density) under operating conditions.
  • Page 63: Verification Process

    CNGmass DCI MODBUS RS485 Custody transfer measurement Verification process 7.3.1 Setting up custody transfer mode The measuring device has to be operational and not set to custody transfer mode. Configure the functions important for custody transfer measurement, such as the output configuration, custody transfer variable and the measuring mode.
  • Page 64 Custody transfer measurement CNGmass DCI MODBUS RS485 A0011835 Fig. 38: Examples of how to seal the various device versions. Endress+Hauser...
  • Page 65: Disabling Custody Transfer Mode

    CNGmass DCI MODBUS RS485 Custody transfer measurement 7.3.2 Disabling custody transfer mode The measuring device has to be operational and already set to custody transfer mode. Disconnect the device from the operating voltage. Remove the custody transfer seals. Warning! In the case of explosion-protected equipment, observe a cooling or discharge time of 10 minutes before opening the device.
  • Page 66: Maintenance

    Maintenance CNGmass DCI MODBUS RS485 Maintenance No special maintenance work is required. External cleaning When cleaning the exterior of measuring devices, always use cleaning agents that do not attack the surface of the housing and the seals. Endress+Hauser...
  • Page 67: Accessories

    CNGmass DCI MODBUS RS485 Accessories Accessories Various accessories, which can be ordered separately from Endress+Hauser, are available for the transmitter and the sensor. Detailed information on the order code in question can be obtained from your Endress+Hauser representative. Measuring principle-specific accessories...
  • Page 68: Troubleshooting

    Troubleshooting CNGmass DCI MODBUS RS485 Troubleshooting 10.1 Troubleshooting instructions Always start troubleshooting with the following checklist if faults occur after commissioning or during operation. The routine takes you directly to the cause of the problem and the appropriate remedial measures.
  • Page 69: System Error Messages

    In the event of a serious fault, a flowmeter might have to be returned to the manufacturer for repair. Follow the important procedures before returning the flowmeter to Endress+Hauser → ä 6. Always enclose a duly completed "Declaration of Contamination" form. You will find a preprinted blank of this form at the back of this manual.
  • Page 70 Troubleshooting CNGmass DCI MODBUS RS485 MODBUS Device status Cause Remedy / spare part message (local display) Register: Register: 6859 6821 Data type: Data type: Integer String (18 byte) TRANSM. 041 S: TRANSM. HW DAT Transmitter DAT: 1. Replace the T-DAT.
  • Page 71 CNGmass DCI MODBUS RS485 Troubleshooting MODBUS Device status Cause Remedy / spare part message (local display) Register: Register: 6859 6821 Data type: Data type: Integer String (18 byte) No. # 3xx → System limits exceeded 131 to 134 STACK CUR.
  • Page 72 Troubleshooting CNGmass DCI MODBUS RS485 MODBUS Device status Cause Remedy / spare part message (local display) Register: Register: 6859 6821 Data type: Data type: Integer String (18 byte) FLUIDTEMP. MIN. 381 S: FLUIDTEMP.MIN. The temperature sensor on the Check the following electrical connections before $: # 381 measuring tube is likely defective.
  • Page 73 CNGmass DCI MODBUS RS485 Troubleshooting MODBUS Device status Cause Remedy / spare part message (local display) Register: Register: 6859 6821 Data type: Data type: Integer String (18 byte) No. # 6xx → Simulation mode active POS.ZERO -RET. S: POSITIVE ZERO Positive zero return active.
  • Page 74: Process Error Messages

    Troubleshooting CNGmass DCI MODBUS RS485 10.3 Process error messages Note! • The listed error message types below correspond to the factory setting. • See also the information on → ä 29. MODBUS Device status message Cause Remedy / spare part...
  • Page 75: Process Errors Without Messages

    – Nameplate specifications: order code and serial number → ä 7 Return the devices to Endress+Hauser Make sure you carry out the procedures listed before a flowmeter is returned to Endress+Hauser for repair or calibration → ä 6. Always enclose a duly completed "Declaration of Contamination" form with the flowmeter. You will find a master copy of the Dangerous Goods Sheet at the back of these Operating Instructions.
  • Page 76: Response Of Outputs To Errors

    Troubleshooting CNGmass DCI MODBUS RS485 10.5 Response of outputs to errors Note! The failsafe mode of totalizers, current, pulse and frequency outputs can be customized by means of various functions in the function matrix. Detailed information È "Description of Device Parameters" manual.
  • Page 77: Spare Parts

    → å 39. Note! Spare parts can be ordered directly from your Endress+Hauser representative by providing the serial number printed on the transmitter's nameplate (→ ä 7). Spare parts are shipped as sets comprising the following parts: •...
  • Page 78: Removing And Installing Printed Circuit Boards

    Troubleshooting CNGmass DCI MODBUS RS485 10.6.1 Removing and installing printed circuit boards Field housing Warning! • Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment.
  • Page 79 CNGmass DCI MODBUS RS485 Troubleshooting A0006811 Fig. 40: Field housing: removing and installing printed circuit boards Local display Latch Ribbon cable (display module) Screws of electronics compartment cover Aperture for installing/removing boards Power unit board Amplifier board Signal cable (sensor)
  • Page 80 Troubleshooting CNGmass DCI MODBUS RS485 Wall-mount housing Warning! • Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment. • Risk of damaging electronic components (ESD protection).
  • Page 81 CNGmass DCI MODBUS RS485 Troubleshooting A0006812 Fig. 41: Wall-mount housing: removing and installing printed circuit boards Housing cover Electronics module Ribbon cable (display module) Screws of electronics compartment cover Aperture for installing/removing boards Power unit board Amplifier board Signal cable (sensor)
  • Page 82: Replacing The Device Fuse

    Troubleshooting CNGmass DCI MODBUS RS485 10.6.2 Replacing the device fuse Warning! Risk of electric shock. Exposed components carry dangerous voltages. Make sure that the power supply is switched off before you remove the cover of the electronics compartment. The main fuse is on the power unit board → å 42.
  • Page 83: Return

    CNGmass DCI MODBUS RS485 Troubleshooting 10.7 Return → ä 6 10.8 Disposal Observe the regulations applicable in your country. 10.9 Software history Date Software version Changes to software Operating Instructions 01.2010 3.06.00 Original software 71100107/ 10.09 Endress+Hauser...
  • Page 84: Technical Data

    Technical data CNGmass DCI MODBUS RS485 Technical data 11.1 Technical data at a glance 11.1.1 Applications → ä 5 11.1.2 Function and system design Measuring principle Mass flow measurement by the Coriolis principle → ä 7 Measuring system 11.1.3 Input Measured variable •...
  • Page 85: Output

    CNGmass DCI MODBUS RS485 Technical data 11.1.4 Output Output signal Current output Active/passive selectable, galvanically isolated, time constant selectable (0.05 to 100 s), full scale value selectable, temperature coefficient: typically 0.005% o.f.s. / °C, resolution: 0.5 μA < 700 Ω...
  • Page 86: Power Supply

    Technical data CNGmass DCI MODBUS RS485 11.1.5 Power supply → ä 16 Electrical connections Supply voltage 85 to 260 V AC, 45 to 65 Hz 20 to 55 V AC, 45 to 65 Hz 16 to 62 V DC Cable entries Power supply and signal cables (inputs/outputs): •...
  • Page 87: Operating Conditions: Installation

    CNGmass DCI MODBUS RS485 Technical data 11.1.7 Operating conditions: Installation → ä 11 Installation instructions Connection cable length, Max. 20 m (max. 66 ft) remote version → ä 8 System pressure 11.1.8 Operating conditions: Environment Ambient temperature range Sensor and transmitter: •...
  • Page 88: 11.1.10 Mechanical Construction

    Technical data CNGmass DCI MODBUS RS485 11.1.10 Mechanical construction Design / dimensions The dimensions and lengths of the sensor and transmitter are provided in the separate "Technical Information" document on the measuring device in question. This can be downloaded as a PDF file from www.endress.com.
  • Page 89: 11.1.11 Human Interface

    CE mark The measuring system is in conformity with the statutory requirements of the EC Directives. Endress+Hauser confirms successful testing of the device by affixing to it the CE mark. C-tick mark The measuring system meets the EMC requirements of the Australian Communications and Media Authority (ACMA).
  • Page 90: 11.1.13 Ordering Information

    Technical data CNGmass DCI MODBUS RS485 11.1.13 Ordering information The Endress +Hauser service organization can provide detailed ordering information and information on the order code. 11.1.14 Accessories/spare parts → ä 67 11.1.15 Documentation ❑ Flow measurement (FA005D/06) ❑ Description of Device Parameters (GP003D/06) ❑...
  • Page 91: Index

    CNGmass DCI MODBUS RS485 Index Index Device parameters See "Description of Device Parameters" manual Accessories ........67 Disposal.
  • Page 92 CNGmass DCI MODBUS RS485 Index Process error Definition ........29 Maintenance .
  • Page 93 CNGmass DCI MODBUS RS485 Index Verification process ......63 Vibration resistance ......87 Vibrations .
  • Page 94 CNGmass DCI MODBUS RS485 Index Endress+Hauser...
  • Page 95 Erklärung zur Kontamination und Reinigung Please reference the Return Authorization Number (RA#), obtained from Endress+Hauser, on all paperwork and mark the RA# clearly on the outside of the box. If this procedure is not followed, it may result in the refusal of the package at our facility.
  • Page 96 www.endress.com/worldwide BA140D/06/en/10.09 71100107 FM+SGML6.0 ProMoDo...

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