Emerson Micro Motion MVD Direct Connect Manual de usuario
Installation Manual
20002273, Rev. AA
July 2014
Micro Motion® MVD™Direct Connect™
Meters
Safety and approval information
This Micro Motion product complies with all applicable European directives when properly installed in accordance with the
instructions in this manual. Refer to the EC declaration of conformity for directives that apply to this product. The EC declaration of
conformity, with all applicable European directives, and the complete ATEX Installation Drawings and Instructions are available on
the internet at www.micromotion.com or through your local Micro Motion support center.
Information affixed to equipment that complies with the Pressure Equipment Directive can be found on the internet at
www.micromotion.com/documentation.
For hazardous installations in Europe, refer to standard EN 60079-14 if national standards do not apply.
Other information
Full product specifications can be found in the product data sheet. Troubleshooting information can be found in the transmitter
configuration manual. Product data sheets and manuals are available from the Micro Motion web site at www.micromotion.com/
documentation.
Return policy
Micro Motion procedures must be followed when returning equipment. These procedures ensure legal compliance with government
transportation agencies and help provide a safe working environment for Micro Motion employees. Failure to follow Micro Motion
procedures will result in your equipment being refused delivery.
Information on return procedures and forms is available on our web support system at www.micromotion.com, or by phoning the
Micro Motion Customer Service department.
Micro Motion customer service
Email:
•Worldwide: flow.support@emerson.com
•Asia-Pacific: [email protected]
Telephone:
North and South America Europe and Middle East Asia Pacific
United States 800-522-6277 U.K. 0870 240 1978 Australia 800 158 727
Canada +1 303-527-5200 The Netherlands +31 (0) 318 495 555 New Zealand 099 128 804
Mexico +41 (0) 41 7686 111 France 0800917901 India 800 440 1468
Argentina +54 11 4837 7000 Germany 0800 182 5347 Pakistan 888 550 2682
Brazil +55 15 3413 8000 Italy 8008 77334 China +86 21 2892 9000
Venezuela +58 26 1731 3446 Central & Eastern +41 (0) 41 7686 111 Japan +81 3 5769 6803
Russia/CIS +7 495 981 9811 South Korea +82 2 3438 4600
Egypt 0800 000 0015 Singapore +65 6 777 8211
Oman 800 70101 Thailand 001 800 441 6426
Qatar 431 0044 Malaysia 800 814 008
Kuwait 663 299 01
South Africa 800 991 390
Saudia Arabia 800 844 9564
UAE 800 0444 0684
Installation Manual 3
Contents
Chapter 1 Before you begin .......................................................................................................... 5
1.1 Safety .................................................................................................................................... 5
Chapter 2 Product overview and architecture .............................................................................. 7
2.1 Installation options ................................................................................................................ 7
2.2 Multidrop installation............................................................................................................. 10
Chapter 3 Installation................................................................................................................... 11
3.1 Supplying power .................................................................................................................... 11
3.1.1 MVD Direct Connect installations without the MVD Direct Connect I.S. barrier ....... 11
3.1.2 MVD Direct Connect installations with the MVD Direct Connect I.S. barrier............. 12
3.2 Locating the components ......................................................................................................13
3.3 Installing the core processor .................................................................................................. 14
3.4 Wiring the core processor to the sensor ................................................................................. 18
3.5 4-wire cable preparation and core processor wiring ............................................................... 18
3.6 Installing the MVD Direct Connect I.S. barrier......................................................................... 21
3.7 Wiring at the MVD Direct Connect I.S. barrier ........................................................................ 22
3.8 Wiring to the remote host...................................................................................................... 23
3.9 Wiring to the power supply .................................................................................................... 24
3.10 Grounding ............................................................................................................................. 24
Chapter 4 MVD Direct Connect communications .......................................................................... 27
4.1 Addresses .............................................................................................................................. 27
4.2 Response time ....................................................................................................................... 27
4.3 Byte order in floating-point values ......................................................................................... 27
4.4 Additional information........................................................................................................... 28
4Direct Connect Meters
Installation Manual 5
Before you begin
1 Before you begin
This manual provides installation information for Micro Motion®MVD™ Direct Connect
meters. MVD Direct Connect meters may or may not include the MVD Direct Connect I.S.
barrier. Both installation types are discussed here.
Additionally, this manual provides basic information for establishing communication
between the MVD Direct Connect meter and the remote host system.
1.1 Safety
For information on I.S. applications, refer to Micro Motion ATEX, UL, or CSA installation
instructions.
WARNING!
Improper installation in a hazardous area can cause an explosion. For information about
hazardous applications, refer to the appropriate Micro Motion approval documentation,
shipped with the meter or available from the Micro Motion web site.
CAUTION!
Excess voltage can damage the core processor. To avoid damaging the core processor, use only
low-voltage DC power.
6Direct Connect Meters
Before you begin
Installation Manual 7
Product overview and architecture
2 Product overview and architecture
MVD Direct Connect meters are used to supply Micro Motion sensor data directly to a
remote Modbus-capable host, rather than to a Micro Motion transmitter. Because there is
no transmitter component, MVD Direct Connect systems are not intrinsically safe unless
the MVD Direct Connect I.S. barrier is included in the installation.
2.1 Installation options
All MVD Direct Connect systems include a sensor and a core processor. Either the standard
core processor or the enhanced core processor may be installed. The core processor
(standard or enhanced) can be mounted integrally with the sensor or remotely.
If the MVD Direct Connect I.S. barrier is installed, a separate barrier is required for each
core processor.
See Figure 2-1 and Figure 2-2 for illustrations of MVD Direct Connect installations without
the MVD Direct Connect I.S. barrier. See Figure 2-3 and Figure 2-4 for illustrations of
MVD Direct Connect installations with the MVD Direct Connect I.S. barrier.
Figure 2-1 MVD Direct Connect installations – Integral core processor, no I.S. barrier
WARNING!
MVD Direct Connect systems without the MVD Direct Connect I.S. barrier are not intrinsically
safe.
Core processor
Remote host
User-supplied power cable
User-supplied RS-485 cable
DC power supply
Sensor
8Direct Connect Meters
Product overview and architecture
Figure 2-2 MVD Direct Connect installations – Remote core processor, no I.S. barrier
Figure 2-3 MVD Direct Connect installations – Integral core processor, I.S. barrier
User-supplied
power cable
User-supplied RS-485 cable
Sensor
Core processor
Junction box
Micro Motion 9-wire cable
Remote host
DC power supply
Remote host
User-supplied power
cable
User-supplied
RS-485 cable
4-wire cable
Core processor
Sensor
DC power supply
Safe areaHazardous area
Barrier
Installation Manual 9
Product overview and architecture
Figure 2-4 MVD Direct Connect installations – Remote core processor, I.S. barrier
4-wire cable
User-supplied power
cable
User-supplied
RS-485 cable
Sensor
Micro Motion
9-wire cable
DC power supply
Remote host
Safe areaHazardous area
Barrier
Core processor
Junction box
10 Direct Connect Meters
Product overview and architecture
2.2 Multidrop installation
Up to fifteen MVD Direct Connect installations can be networked to a single remote host. If
I.S. barriers are used, one barrier is required for each core processor. Figure 2-5 shows the
four options for a multidrop installation.
Figure 2-5 Multidrop installation options
Safe area
Hazardous area
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