Emerson Micro Motion MVD Direct Connect Manuel utilisateur

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

Table des matières

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