20001700 REV C Transmitter Installation Man.pdf

Installation Manual P/N 20001700, Rev. C November 2007

Micro Motion®

Model 1700 and Model 2700 Transmitters

Installation Manual

©2007, Micro Motion, Inc. All rights reserved. ELITE and ProLink are registered trademarks, and MVD and MVD Direct Connect are trademarks of Micro Motion, Inc., Boulder, Colorado. Micro Motion is a registered trade name of Micro Motion, Inc., Boulder, Colorado. The Micro Motion and Emerson logos are trademarks and service marks of Emerson Electric Co. All other trademarks are property of their respective owners.

Installation Manual iii

Contents

Chapter 1 Before You Begin

1.1 Overview

1.2 Safety

1.3 Flowmeter components

1.4 Transmitter type, installation type, and outputs option board

1.5 Transmitter installation procedures

1.6 Flowmeter documentation

1.7 Micro Motion customer service

Chapter 2 Installing the Transmitter

2.1 Overview

2.2 Installation architecture

2.3 Determining an appropriate location

2.3.1 Environmental requirements

2.3.2 Hazardous area classifications

2.3.3 Power source

2.3.4 Maximum cable lengths

2.3.5 Accessibility for maintenance

2.4 Mounting the transmitter

2.4.1 Integral installations

2.4.2 4-wire remote or remote core processor with remote transmitter installations

2.4.3 9-wire remote installations

2.5 Mounting the remote core processor

2.6 Grounding the flowmeter components

2.7 Supplying power

2.8 Rotating the display

Chapter 3 Wiring the Transmitter to the Sensor

3.1 Overview

3.2 Cable types

3.2.1 4-wire cable

3.2.2 9-wire cable

3.3 Wiring for 4-wire remote installations

3.4 Wiring for 9-wire remote installations

3.5 Wiring for remote core processor with remote transmitter installations

Chapter 4 Output Wiring – Model 1700/2700 Analog Transmitters

4.1 Overview

4.2 Output terminals and output types

4.3 Output wiring

iv Micro Motion® Model 1700 and 2700 Transmitters

Contents

Chapter 5 Output Wiring – Model 1700/2700 Intrinsically Safe Transmitters . . . 33

5.1 Overview

5.2 Output terminals and output types

5.3 Safe area output wiring

5.3.1 Safe area mA output wiring

5.3.2 Safe area frequency/discrete output wiring

5.4 Hazardous area output wiring

5.4.1 Hazardous area safety parameters

5.4.2 Hazardous area mA output wiring

5.4.3 Hazardous area frequency/discrete output wiring

Chapter 6 Output Wiring – Model 2700 Configurable I/O Transmitters

6.1 Overview

6.2 Channel configuration

6.3 mA output wiring

6.4 Frequency output wiring

6.5 Discrete output wiring

6.6 Discrete input wiring

Chapter 7 Output Wiring – Model 2700 FOUNDATION fieldbus and PROFIBUS-PA Transmitters

7.1 Overview

7.2 FOUNDATION fieldbus wiring

7.3 PROFIBUS-PA wiring

Appendix A Specifications A.1 Functional specifications

A.1.1 Electrical connections A.1.2 Input/output signals A.1.3 Digital communication A.1.4 Power supply A.1.5 Environmental requirements A.1.6 Ambient temperature effect A.1.7 EMC compliance

A.2 Hazardous area classifications A.2.1 UL and CSA A.2.2 ATEX and IECEx

A.3 Performance specifications A.4 Physical specifications

A.4.1 Housing A.4.2 Mounting A.4.3 Interface/display A.4.4 Weight A.4.5 Dimensions

Index

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Chapter 1 Before You Begin

1.1 Overview

This chapter provides an orientation to the use of this manual. This manual describes the procedures required to install the following Model 1700 and 2700 transmitters:

• Model 1700 or Model 2700 with analog outputs option board

• Model 1700 or Model 2700 with intrinsically safe analog outputs option board

• Model 2700 with configurable input/outputs option board

• Model 2700 with FOUNDATION fieldbus™ option board

• Model 2700 with PROFIBUS-PA option board

If you do not know what transmitter you have, see Section 1.4 for instructions on identifying the transmitter type from the model number on the transmitter’s tag.

Note: Installation information for Model 1500 transmitters or Model 2500 transmitters is provided in a separate manual. See the manual for your transmitter.

1.2 Safety

Safety messages are provided throughout this manual to protect personnel and equipment. Read each safety message carefully before proceeding to the next step.

WARNING

Improper installation in a hazardous area can cause an explosion.

For information about hazardous applications, refer to the approval documentation, shipped with the transmitter or available from the Micro Motion web site.

WARNING

Hazardous voltage can cause severe injury or death.

Make sure power is disconnected before installing transmitter.

CAUTION

Improper installation could cause measurement error or flowmeter failure.

Follow all instructions to ensure transmitter will operate correctly.

2 Micro Motion® Model 1700 and 2700 Transmitters

Before You Begin

1.3 Flowmeter components

The Model 1700 or 2700 transmitter is one component in your Micro Motion flowmeter. Other major components include:

• The sensor, which provides measurement functions

• The core processor, which provides memory and processing functions

1.4 Transmitter type, installation type, and outputs option board To install the transmitter, you must know your transmitter type, installation type, and outputs option board. This section provides information on obtaining this information. The codes described below match the codes that were used to order your transmitter.

1. Obtain the transmitter's model number, which is provided on a tag attached to the side of the transmitter.

• Model 1700 transmitters have a model number of the form 1700xxxxxxxxxx.

• Model 2700 transmitters have a model number of the form 2700xxxxxxxxxx.

2. The fifth character in the model number (xxxxXxxxxxxxxx) represents the installation type that was ordered:

• R = remote (4-wire remote installation)

• I = integral (transmitter mounted on sensor)

• C = transmitter/core processor assembly (9-wire remote installation)

• B = remote core processor with remote transmitter

Note: For more information on installation type, see Figure 2-1.

3. The eighth character in the model number (xxxxxxxXxxxxxx) represents the outputs option board.

• A = transmitter with analog outputs option board (one mA, one frequency, one RS-485)

• B = transmitter with configurable input/outputs option board, default output configuration (two mA, one frequency)

• C = transmitter with configurable input/outputs option board, customized output configuration

• D = transmitter with intrinsically safe analog outputs option board

• E = transmitter with intrinsically safe (FISCO compliant) FOUNDATION fieldbus outputs option board

• N = transmitter with non-incendive (FNICO compliant) FOUNDATION fieldbus outputs option board

• G = transmitter with PROFIBUS-PA outputs option board

Note: The remaining characters in the model number describe options that do not affect transmitter installation.

The following examples illustrate use of the model number to determine transmitter type, installation type, and output board type:

• 1700RxxAxxxxxx = Model 1700 remote transmitter with analog outputs option board

• 2700CxxDxxxxxx = Model 2700 transmitter/core processor assembly with intrinsically safe outputs option board

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1.5 Transmitter installation procedures

To install the transmitter, the following procedures are required:

• Install the transmitter – see Chapter 2

• Wire the transmitter to the sensor – see Chapter 3

• Wire the transmitter outputs:

- For Model 1700 or 2700 analog outputs transmitters, see Chapter 4.

- For Model 1700 or 2700 intrinsically safe analog outputs transmitters, see Chapter 5.

- For Model 2700 configurable I/O transmitters, see Chapter 6.

- For Model 2700 FOUNDATION fieldbus and PROFIBUS-PA outputs transmitters, see Chapter 7.

1.6 Flowmeter documentation

Table 1-1 lists documentation sources for other required information. Documents can be obtained in PDF form from the Micro Motion web site (www.micromotion.com/documentation).

Table 1-1 Flowmeter documentation resources

Topic Document

Sensor installation Installation manual shipped with sensor

Core processor installation (if mounted remotely from sensor and transmitter)

This document

Transmitter configuration, transmitter startup and use, and transmitter troubleshooting

Series 1000 and 2000 Transmitter Configuration and Use Manual or Model 2700 Transmitter with FOUNDATION Fieldbus Installation and Operation Manual or Model 2700 Transmitter with PROFIBUS-PA Installation and Operation Manual

4 Micro Motion® Model 1700 and 2700 Transmitters

1.7 Micro Motion customer service

For technical assistance, phone the Micro Motion Customer Service department:

• In the U.S.A., phone 800-522-MASS (800-522-6277) (toll free)

• In Canada and Latin America, phone +1 303-527-5200 (U.S.A.)

• In Asia:

- In Japan, phone 3 5769-6803

- In other locations, phone +65 6777-8211 (Singapore)

• In Europe:

- In the U.K., phone 0870 240 1978 (toll-free)

- In other locations, phone +31 (0) 318 495 555 (The Netherlands)

Customers outside the U.S.A. can also email Micro Motion customer service at International.MMISupport@EmersonProcess.com.

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Chapter 2 Installing the Transmitter

2.1 Overview

This chapter describes how to install Micro Motion Model 1700 and 2700 transmitters. The following general steps are required:

• Determine the location of the transmitter and other flowmeter components (see Section 2.3)

• Mount the transmitter (see Section 2.4)

• Mount the core processor, if required (see Section 2.5)

• Ground the flowmeter components (see Section 2.6)

• Supply power to the flowmeter (see Section 2.7)

• Rotate the display, if desired and the transmitter has a display (see Section 2.8)

2.2 Installation architecture

Your flowmeter installation will match one of the architectures shown in Figure 2-1. Mounting, sensor wiring, and grounding requirements depend on this architecture. Your installation type should be consistent with the installation type specified in your transmitter model number (see Section 1.4).

6 Micro Motion® Model 1700 and 2700 Transmitters

Installing the Transmitter

Figure 2-1 Installation types

Transmitter

Sensor

Junction box 9-wire cable

9-wire remote

Core processor

4-wire remote Transmitter Sensor

Core processor

4-wire cable

Transmitter

Sensor

Core processor

Integral

Remote core processor with remote transmitter

4-wire cable

9-wire cable

Sensor

Junction box

Transmitter

Core processor

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2.3 Determining an appropriate location

To determine an appropriate location for the transmitter, you must consider the environmental requirements of the transmitter and core processor, hazardous area classification, location of power source, cable lengths, accessibility for maintenance, and visibility of the display (if the transmitter is equipped with a display).

2.3.1 Environmental requirements

The transmitter’s environmental requirements include temperature, humidity, and vibration.

Temperature limits Install the transmitter in an environment where ambient temperature is between –40 and +140 °F (–40 and +60 °C). If possible, install the transmitter in a location that will prevent direct exposure to sunlight.

Different ambient temperature requirements may apply when installing the transmitter in a hazardous area. Refer to the approval documentation shipped with the transmitter or available on the Micro Motion web site.

Humidity limits

Install the transmitter in an environment where relative humidity is between 5 and 95%, non-condensing at 140 °F (60 °C).

Vibration limits The transmitter meets IEC 68.2.6, endurance sweep, 5 to 2000 Hz, 50 sweep cycles at 1.0 g.

2.3.2 Hazardous area classifications

If you plan to mount the transmitter in a hazardous area:

• Verify that the transmitter has the appropriate hazardous area approval. Each transmitter has a hazardous area approval tag attached to the transmitter housing.

• Ensure that any cable used between the transmitter and the sensor meets the hazardous area requirements.

For more information about hazardous area classifications and requirements, see Section A.2.

2.3.3 Power source

Connect the transmitter to an AC or DC voltage source. The transmitter automatically recognizes the source voltage.

AC power requirements

If you are using AC power, the following requirements apply:

• 85–265 VAC

• 50/60 Hz

• 6 watts typical, 11 watts maximum

8 Micro Motion® Model 1700 and 2700 Transmitters

DC power requirements

Note: These requirements assume a single transmitter per cable. Connecting multiple transmitters to a single cable should be avoided.

If you are using DC power, the following requirements apply:

• 18–100 VDC

• 6 watts typical, 11 watts maximum

• At startup, the transmitter power source must provide a minimum of 1.5 amps of short-term current per transmitter.

• Length and conductor diameter of the power cable must be sized to provide 18 VDC minimum at the power terminals, at a load current of 0.5 amps. To size the cable, refer to Table 2-1 and use the following formula as a guideline:

Table 2-1 Typical power cable resistances at 68 °F (20 °C)

Gauge Resistance(1)

(1) These values include the resistance of both high and low conductors in a cable.

14 AWG 0.0050 Ω/foot

16 AWG 0.0080 Ω/foot

18 AWG 0.0128 Ω/foot

20 AWG 0.0204 Ω/foot

2,5 mm2 0,0136 Ω/meter

1,5 mm2 0,0228 Ω/meter

1 mm2 0,0340 Ω/meter

0,75 mm2 0,0460 Ω/meter

0,5 mm2 0,0680 Ω/meter

Example The transmitter is mounted 350 feet from a DC power supply. If you want to use 16 AWG cable, calculate the required voltage at the DC power supply as follows:

MinimumSupplyVoltage 18V CableResistance CableLength× 0.5 A×( )+=

MinimumSupplyVoltage 18V 0.0080 ohms/ft 350 ft× 0.5A×( )+=

MinimumSupplyVoltage 19.4V=

MinimumSupplyVoltage 18V CableResistance CableLength× 0.5A×( )+=

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2.3.4 Maximum cable lengths

This requirement does not apply to integral installations (see Figure 2-1). For other installation types (see Figure 2-1), maximum cable length between flowmeter components depends on the installation type and the cable type. Refer to Figure 2-1, then see Table 2-2.

2.3.5 Accessibility for maintenance

Ensure that the transmitter is mounted in a location and orientation that will allow easy access to the terminals and to the display (if your transmitter has a display).

2.4 Mounting the transmitter

You can mount the transmitter in any orientation as long as the conduit and wiring openings do not point upward. If possible, mount the transmitter so that there is at least 8–10″ (200–250 mm) clearance at the rear of the housing to enable operator access to the wiring and power compartments.

For transmitter dimensions, see Appendix A.

Table 2-2 Maximum cable lengths

Cable type Wire gauge Maximum length

Micro Motion 9-wire Not applicable 60 feet (20 meters)

Micro Motion 4-wire Not applicable 1000 feet (300 meters)

User-supplied 4-wire

• Power wires (VDC) 22 AWG (0,35 mm2) 300 feet (90 meters)

20 AWG (0,5 mm2) 500 feet (150 meters)

18 AWG (0,8 mm2) 1000 feet (300 meters)

• Signal wires (RS-485) 22 AWG (0,35 mm2) or larger 1000 feet (300 meters)

CAUTION

Condensation or excessive moisture entering the transmitter could damage the transmitter and result in measurement error or flowmeter failure.

To reduce the risk of measurement error or flowmeter failure:

• Ensure the integrity of gaskets and O-rings.

• Grease the O-rings every time the transmitter housing or core processor housing is opened and closed.

• Do not mount the transmitter with the conduit openings pointing upward.

• Install drip legs on conduit or cable.

• Seal the conduit openings.

• Fully tighten the transmitter cover.

10 Micro Motion® Model 1700 and 2700 Transmitters

2.4.1 Integral installations

If you chose an integral installation (see Figure 2-1), there are no special mounting instructions for the transmitter.

You can rotate an integrally mounted transmitter up to 360° in 90° increments, to one of four possible positions on the core processor base. See Figure 2-2.

Figure 2-2 Rotating the transmitter

To rotate the transmitter on the core processor:

1. Loosen each of the four cap screws (4 mm) that fasten the transmitter to the base.

2. Rotate the transmitter counter-clockwise so that the cap screws are in the unlocked position.

3. Gently lift the transmitter straight up, disengaging it from the cap screws. Do not disconnect or damage the wires that connect the transmitter to the core processor.

4. Rotate the transmitter to the desired orientation, and align the slots with the cap screws. Do not pinch or stress the wires.

5. Gently lower the transmitter onto the base, inserting the cap screws into the slots.

6. Rotate the transmitter clockwise so that the cap screws are in the locked position.

7. Tighten the cap screws, torquing to 20 to 30 in-lbs (2,3 to 3,4 N-m).

CAUTION

Damaging the wires that connect the transmitter to the core processor can cause measurement error or flowmeter failure.

To reduce the risk of damaging the wires, do not move the transmitter more than a few inches from the core processor. When reassembling the flowmeter, ensure that the wires will not be bent or pinched in the housing.

Base

Core processor

Transmitter

Sensor

Transition ring

4 X Cap screws (4 mm)

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2.4.2 4-wire remote or remote core processor with remote transmitter installations

If you chose the 4-wire remote or the remote core processor with remote transmitter installation (see Figure 2-1), see Figure 2-3 for a diagram of the mounting bracket supplied with the transmitter. Both pipe mounting and wall mounting are shown. Ensure that the transmitter is mounted and oriented in a way that will allow easy access to the terminals and to the display (if your transmitter has a display).

Figure 2-3 4-wire remote – Wall mount or pipe mount

To mount the transmitter:

1. Identify the components shown in Figure 2-4. For dimensions, see Appendix A.

2. If desired, re-orient the transmitter on the bracket.

a. Remove the junction end-cap from the junction housing.

b. Loosen each of the four cap screws (4 mm) inside the junction housing.

c. Rotate the bracket so that the transmitter is oriented as desired.

d. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).

e. Replace the junction end-cap.

3. Attach the mounting bracket to an instrument pole or wall. For pipe mount, two user-supplied U-bolts are required. Contact Micro Motion to obtain a pipe-mount installation kit if required.

CAUTION

Twisting the core processor will damage the sensor.

To reduce the risk of damaging the sensor, do not allow the core processor to rotate.

Mounting bracket (wall mount)

Mounting bracket (pipe mount)

Note: If possible, maintain 8–10″ (200–250 mm) clearance at the rear of the transmitter.

12 Micro Motion® Model 1700 and 2700 Transmitters

Figure 2-4 Transmitter components – 4-wire remote or remote core processor with remote transmitter installations

2.4.3 9-wire remote installations If you chose a 9-wire remote installation (see Figure 2-1), see Figure 2-5 for a diagram of the mounting bracket supplied with the transmitter/core processor assembly. Ensure that the transmitter is mounted and oriented in a way that will allow easy access to the terminals and to the display (if your transmitter has a display).

Figure 2-5 9-wire remote – Wall mount or pipe mount

Ground screw

Mounting bracket

Main enclosure

Junction housing

Mating connector socket

Mating connector

Junction end-cap

4 X Cap screws (4 mm)

Conduit opening for 4-wire cable

Mounting bracket (wall mount)

Mounting bracket (pipe mount)

Note: If possible, maintain 8–10″ (200–250 mm) clearance at the rear of the transmitter.

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To mount the transmitter/core processor assembly:

1. Identify the components shown in Figure 2-6. For dimensions, see Appendix A.

2. If desired, re-orient the transmitter on the bracket.

a. Loosen each of the four cap screws (4 mm).

b. Rotate the bracket so that the transmitter is oriented as desired.

c. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).

3. Attach the mounting bracket to an instrument pole or wall. For pipe mount, two user-supplied U-bolts are required. Contact Micro Motion to obtain a pipe-mount installation kit if required.

Figure 2-6 Transmitter/core processor assembly – Exploded view

2.5 Mounting the remote core processor

Note: This step is required only for remote core processor with remote transmitter installations (see Figure 2-1). If you have an integral installation, 4-wire remote installation, or 9-wire remote installation, go to Section 2.6.

If you chose the remote core processor with remote transmitter installation (see Figure 2-1), see Figure 2-3 for a diagram of the mounting bracket supplied with the transmitter. Both pipe mounting and wall mounting are shown.

End-cap Mounting bracket

Core processor housing

Transmitter

Core processor

4 × Cap screws (4 mm)

Conduit opening for 9-wire cable

14 Micro Motion® Model 1700 and 2700 Transmitters

Figure 2-7 Remote core processor – Wall mount or pipe mount

To mount the core processor:

1. Identify the components shown in Figure 2-8. For dimensions, see Appendix A.

2. If desired, reorient the core processor housing on the bracket.

a. Loosen each of the four cap screws (4 mm).

b. Rotate the bracket so that the core processor is oriented as desired.

c. Tighten the cap screws, torquing to 30 to 38 in-lbs (3 to 4 N-m).

3. Attach the mounting bracket to an instrument pole or wall. For pipe mount, two user-supplied U-bolts are required. Contact Micro Motion to obtain a pipe-mount installation kit if required.

Figure 2-8 Remote core processor components

Mounting bracket (wall mount)

Mounting bracket (pipe mount)

End-capMounting bracket

Core processor lid

Core processor housing

Conduit opening for 4-wire cable

Conduit opening for 9-wire cable

4 × Cap screws (4 mm)

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2.6 Grounding the flowmeter components

Grounding requirements depend on the installation type (see Figure 2-1). Grounding methods for each flowmeter component are listed in Table 2-3.

If national standards are not in effect, follow these grounding guidelines:

• Use copper wire, 14 AWG (2,5 mm2) or larger wire size, for grounding.

• Keep all ground leads as short as possible, less than 1 Ω impedance.

• Connect ground leads directly to earth, or follow plant standards.

CAUTION

Improper grounding could cause measurement error.

To reduce the risk of measurement error:

• Ground the transmitter to earth, or follow ground network requirements for the facility.

• For installation in an area that requires intrinsic safety, refer to Micro Motion approval documentation, shipped with the transmitter or available from the Micro Motion web site.

• For hazardous area installations in Europe, refer to standard EN 60079-14 if national standards do not apply.

Table 2-3 Grounding methods for flowmeter components

Installation architecture Components Grounding method

Integral Sensor / core processor / transmitter

Ground via piping, if possible (see sensor documentation). Otherwise, ground according to applicable local standards using either the transmitter’s internal or external ground screw.

4-wire remote Sensor / core processor assembly

See sensor documentation.

Transmitter Ground according to applicable local standards, using either the transmitter’s internal or external ground screw.

9-wire remote Sensor / junction box See sensor documentation.

Transmitter / core processor assembly

Ground according to applicable local standards, using either the transmitter’s internal or external ground screw, or the core processor’s internal ground screw.

Remote core processor with remote transmitter

Sensor See sensor documentation.

Core processor Ground according to applicable local standards, using either the internal or external ground screw.

Transmitter Ground according to applicable local standards, using either the transmitter’s internal or external ground screw.

16 Micro Motion® Model 1700 and 2700 Transmitters

2.7 Supplying power

In all installations, power must be provided to the transmitter. Refer to Section 2.3.3 for information on the transmitter’s power supply requirements.

A user-supplied switch may be installed in the power supply line. For compliance with low-voltage directive 2006/95/EC (European installations), a switch in close proximity to the transmitter is required.

Connect the power supply to terminals 9 and 10, under the Warning flap. Terminate the positive (line) wire on terminal 10 and the return (neutral) wire on terminal 9. Ground the power supply using the equipment ground, also under the Warning flap. See Figure 2-9.

Figure 2-9 Wiring the transmitter power supply

2.8 Rotating the display

If your transmitter has a display, you can rotate the display on the transmitter up to 360° in 90° increments.

WARNING

Removing the display cover in explosive atmospheres while the power is on can cause an explosion.

To reduce the risk of an explosion, before removing the display cover in explosive atmospheres, be sure to shut off the power and wait five minutes.

Equipment ground

Warning flap

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To rotate the display, follow the instructions below:

1. Power down the transmitter.

2. Remove the end-cap clamp by removing the cap screw. See Figure 2-10.

3. Turn the display cover counterclockwise to remove it from the main enclosure.

4. Carefully loosen (and remove if necessary) the semicaptive display screws while holding the display module in place.

5. Carefully pull the display module out of the main enclosure until the sub-bezel pin terminals are disengaged from the display module.

Note: The display pins may come out of the board stack with the display module. If this happens, simply remove the pins and reinstall them.

6. Rotate the display module to the desired position.

7. Insert the sub-bezel pin terminals into the display module pin holes to secure the display in its new position.

8. If you have removed the display screws, line them up with the matching holes on the sub-bezel, then reinsert and tighten them.

9. Place the display cover onto the main enclosure. Turn the display cover clockwise until it is snug.

10. Replace the end-cap clamp by reinserting and tightening the cap screw.

11. Restore power to the transmitter.

WARNING

Using a dry cloth to clean the display cover can cause static discharge, which could result in an explosion in an explosive atmosphere.

To reduce the risk of an explosion, always use a damp cloth to clean the display cover in an explosive atmosphere.

18 Micro Motion® Model 1700 and 2700 Transmitters

Figure 2-10 Display components

Display cover

Display screws

Display module

Main enclosure

Sub-bezel

Pin terminals

Cap screw

End-cap clamp

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Chapter 3 Wiring the Transmitter to the Sensor

3.1 Overview

This chapter describes how to connect Micro Motion Model 1700 and 2700 transmitters to a Micro Motion sensor.

Note: If you have an integral installation, this step is not required. Continue with wiring the transmitter outputs (Chapters 4–7).

Wiring requirements between the sensor and transmitter depend on the installation type (see Figure 2-1).

• If you have a 4-wire remote transmitter installation, review the information on 4-wire cable in Section 3.2, then follow the instructions in Section 3.3.

• If you have a 9-wire remote transmitter installation, review the information on 9-wire cable in Section 3.2, then follow the instructions in Section 3.4.

• If you have a remote core processor with remote transmitter installation, review the information on both 4-wire and 9-wire cable in Section 3.2, then follow the instructions in Section 3.5.

3.2 Cable types

This section describes the types of 4-wire cable and 9-wire cable that can be used for wiring the transmitter to the sensor.

CAUTION

Large electromagnetic fields can interfere with flowmeter communication signals.

Improper installation of cable or conduit can cause measurement error or flowmeter failure. To reduce the risk of measurement error or flowmeter failure, keep cable or conduit away from devices such as transformers, motors, and power lines which produce large electromagnetic fields.

20 Micro Motion® Model 1700 and 2700 Transmitters

Wiring the Transmitter to the Sensor

3.2.1 4-wire cable Micro Motion offers two types of 4-wire cable: shielded and armored. Both types contain shield drain wires.

User-supplied 4-wire cable must meet the following requirements:

• Twisted pair construction

• The gauge requirements as described in Table 2-2

• The applicable hazardous area requirements, if the core processor is installed in a hazardous area (see the approval documentation shipped with the transmitter or available on the Micro Motion web site)

3.2.2 9-wire cable

Micro Motion offers three types of 9-wire cable: jacketed, shielded, and armored. Refer to Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide for detailed descriptions of these cable types and for assistance in selecting the appropriate cable for your installation.

3.3 Wiring for 4-wire remote installations

To connect the cable, follow the steps below.

1. Prepare the cable as described in the sensor documentation.

2. Connect the cable to the core processor as described in the sensor documentation.

3. To connect the cable to the transmitter:

a. Identify the wires in the 4-wire cable. The 4-wire cable supplied by Micro Motion consists of one pair of 18 AWG (0,75 mm2) wires (red and black), which should be used for the VDC connection, and one pair of 22 AWG (0,35 mm2) wires (green and white), which should be used for the RS-485 connection.

b. Connect the four wires from the core processor to terminals 1–4 on the mating connector of the transmitter. See Figures 3-1, 3-2, and 3-3. Never ground the shield, braid, or drain wire(s) at the transmitter.

Figure 3-1 4-wire cable between enhanced core processor and transmitter

Core processor terminals

4-wire cable Mating connector (transmitter)Maximum cable length: see Table 2-2

VDC+

VDC–

RS-485A

RS-485B

User-supplied or factory-supplied cable

V D

C

R ed

V D

C

(B la ck

R S

-4

A w hi te

R S

-4

B

G re en

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Figure 3-2 4-wire cable between standard core processor and transmitter

Figure 3-3 Wiring to the mating connector

Core processor terminals 4-wire cable Mating connector (transmitter)

Maximum cable length: see Table 2-2

VDC+

(Red)

VDC–

(Black)

RS-485B

(Green)

RS-485A

(White)

VDC+

VDC–

RS-485A

RS-485B

User-supplied or factory-supplied cable

Mating connector Match wire colors as shown in Figures 3-1 and 3-2

Transmitter

Feed 4 wires from sensor through the conduit opening and connect them to the mating connector

22 Micro Motion® Model 1700 and 2700 Transmitters

3.4 Wiring for 9-wire remote installations

If you chose a 9-wire remote installation (see Figure 2-1), a 9-wire cable must be used to connect the junction box on the sensor to the core processor on the transmitter/core processor assembly.

To connect the cable, follow the steps below:

1. Refer to Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide for instructions on cable shielding and preparation:

• At the sensor end, follow the instructions for your cable type.

• At the transmitter end, follow the instructions for your cable type with an MVD transmitter.

2. To connect the wires, refer to Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide and follow the instructions for your sensor with an MVD transmitter.

Additional information for connecting the wires at the transmitter is provided below:

a. Identify the components shown in Figure 2-6.

b. Remove the end-cap.

c. Insert the 9-wire cable through the conduit opening.

d. Connect the wires to the plugs supplied with the transmitter.

e. Insert the plugs into the sockets inside the lower conduit ring. See Figure 3-4.

Figure 3-4 9-wire cable between sensor and core processor (on transmitter)

3. Ground the cable.

CAUTION

Allowing the shield drain wires to contact the sensor junction box can cause flowmeter errors.

Do not allow the shield drain wires to contact the sensor junction box.

Brown Red

Green White

Blue Gray

Orange Violet Yellow

Black (Drains from all wire sets)

Plug and socket

Mounting screw

Blue Gray Orange

Red Green White

Brown Violet

Yellow

Ground screw

Black

9-wire cable from sensor Core processor (on transmitter)

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If using jacketed cable:

a. Ground the shield drain wires (the black wire) only on the core processor end, by connecting it to the ground screw inside the lower conduit ring. Never ground to the core processor’s mounting screw. Never ground the shield drain wires at the sensor junction box.

If using shielded or armored cable:

a. Ground the shield drain wires (the black wire) only on the core processor end, by connecting it to the ground screw inside the lower conduit ring. Never ground to the core processor’s mounting screw. Never ground the shield drain wires at the sensor junction box.

b. Ground the cable braid on both ends, by terminating it inside the cable glands.

4. Ensure integrity of gaskets, grease all O-rings, then close the junction box housing and core processor end-cap, and tighten all screws.

3.5 Wiring for remote core processor with remote transmitter installations This task includes two subtasks:

• Subtask 1: Wiring the remote core processor to the transmitter (4-wire cable)

• Subtask 2: Wiring the sensor to the remote core processor (9-wire cable)

Subtask 1: Wire the remote core processor to the transmitter

1. Use one of the following methods to shield the wiring from the core processor to the transmitter:

• If you are installing unshielded wiring in continuous metallic conduit that provides 360° termination shielding for the enclosed wiring, go to Subtask 1, Step 6.

• If you are installing a user-supplied cable gland with shielded cable or armored cable, terminate the shields in the cable gland. Terminate both the armored braid and the shield drain wires in the cable gland. Go to Subtask 1, Step 6.

• If you are installing a Micro Motion-supplied cable gland at the core processor housing:

- Refer to Figure 3-5 to identify the cable gland to use for the 4-wire cable conduit opening.

- Prepare the cable and apply shielded heat shrink to the cable (see Figure 3-6). The shielded heat shrink provides a shield termination suitable for use in the gland when using cable whose shield consists of foil and not a braid. Proceed to Subtask 1, Step 2.

- With armored cable, where the shield consists of braid, prepare the cable as described below, but do not apply heat shrink. Proceed to Subtask 1, Step 2.

CAUTION

Damaging the wires that connect the transmitter to the sensor can cause measurement error or flowmeter failure.

To reduce the risk of measurement error or flowmeter failure, when closing the housings on the sensor and core processor, make sure that the wires are not caught or pinched.

24 Micro Motion® Model 1700 and 2700 Transmitters

Figure 3-5 Cable glands

2. Remove the cover from the core processor housing.

3. Slide the gland nut and the clamping insert over the cable.

Figure 3-6 Micro Motion cable gland and heat shrink

4. For connection at the core processor housing, prepare shielded cable as follows (for armored cable, omit steps d, e, f, and g):

a. Strip 4 1/2 inches (114 mm) of cable jacket.

b. Remove the clear wrap that is inside the cable jacket, and remove the filler material between the wires.

c. Remove the foil shield or braid and drain wires from the insulated wires, leaving 3/4 inch (19 mm) of foil or braid exposed, and separate the wires.

d. Wrap the shield drain wire(s) around the exposed foil twice. Cut off the excess wire. See Figure 3-7.

Cable gland

• Used with 4-wire conduit opening

Cable gland

• 3/4″–14 NPT

• Used with 9-wire conduit opening

Cable glands

• 1/2″–14 NPT or M20 × 1.5

• Used with transmitter

4 1/2 in (114 mm)

3/4 in (19 mm)

7/8 in (22 mm) 7/8 in

(22 mm)

Shielded heat shrink

Gland body

Gland nut

Gland clamping insert

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Figure 3-7 Wrapping the shield drain wires

e. Place the shielded heat shrink over the exposed shield drain wire(s). The tubing should completely cover the drain wires. See Figure 3-8.

f. Without burning the cable, apply heat (250 °F or 120 °C) to shrink the tubing.

Figure 3-8 Applying the heat shrink

g. Position gland clamping insert so the interior end is flush with the heat shrink.

h. Fold the cloth shield or braid and drain wires over the clamping insert and approximately 1/8 inch (3 mm) past the O-ring. See Figure 3-9.

Figure 3-9 Folding the cloth shield

i. Install the gland body into the core processor housing conduit opening. See Figure 3-10.

26 Micro Motion® Model 1700 and 2700 Transmitters

Figure 3-10 Gland body and core processor housing

5. Insert the wires through the gland body and assemble the gland by tightening the gland nut.

6. Identify the wires in the 4-wire cable. The 4-wire cable supplied by Micro Motion consists of one pair of 18 AWG (0,75 mm2) wires (red and black), which should be used for the VDC connection, and one pair of 22 AWG (0,35 mm2) wires (green and white), which should be used for the RS-485 connection. Connect the four wires to the numbered slots on the core processor, matching corresponding numbered terminals on the transmitter. See Figure 3-11.

Figure 3-11 Connecting the wires at the core processor

7. Reinstall and tighten the core processor housing cover.

CAUTION

Twisting the core processor will damage the equipment.

Do not twist the core processor.

Power supply + (Red wire)

Power supply – (Black wire)

RS-485A

(White wire)

RS-485B

(Green wire)

Core processor housing internal ground screw

• For connections to earth ground (if core processor cannot be grounded via sensor piping and local codes require ground connections to be made internally)

• Do not connect shield drain wires to this terminal

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8. At the transmitter, connect the four wires from the core processor to terminals 1–4 on the mating connector of the transmitter. See Figure 3-2. Never ground the shield, braid, or shield drain wire(s) at the transmitter. Refer to Figure 2-4.

Subtask 2: Wiring the sensor to the remote core processor

1. Refer to Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide for instructions on cable shielding and preparation:

• At the sensor end, follow the instructions for your cable type.

• At the core processor end, follow the instructions for your cable type with an MVD transmitter.

2. To connect the wires, refer to Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide and follow the instructions for your sensor with an MVD transmitter.

Additional information for connecting the wires at the core processor is provided below:

a. Identify the components shown in Figure 2-8.

b. Remove the end-cap.

c. Insert the 9-wire cable through the conduit opening.

d. Connect the wires to the plugs supplied with the core processor.

e. Insert the plugs into the sockets inside the lower conduit ring. See Figure 3-12.

Figure 3-12 9-wire cable between sensor and core processor

3. Ground the cable.

CAUTION

Allowing the shield drain wires to contact the sensor junction box can cause flowmeter errors.

Do not allow the shield drain wires to contact the sensor junction box.

Brown Red

Green White

Blue Gray

Orange Violet Yellow

Black (Drains from all wire sets)

Plug and socket

Mounting screw

Blue Gray Orange

Red Green White

Brown Violet

Yellow

Ground screw

Black

9-wire cable from sensor Core processor

28 Micro Motion® Model 1700 and 2700 Transmitters

If using jacketed cable:

a. Ground the shield drain wires (the black wire) only on the core processor end, by connecting it to the ground screw inside the lower conduit ring. Never ground to the core processor’s mounting screw. Never ground the cable at the sensor junction box.

If using shielded or armored cable:

a. Ground the shield drain wires (the black wire) only on the core processor end, by connecting it to the ground screw inside the lower conduit ring. Never ground to the core processor’s mounting screw. Never ground the cable at the sensor junction box.

b. Ground the cable braid on both ends, by terminating it inside the cable glands.

4. Ensure integrity of gaskets, grease all O-rings, then close the junction box housing and core processor end-cap, and tighten all screws.

CAUTION

Damaging the wires that connect the transmitter to the sensor can cause measurement error or flowmeter failure.

To reduce the risk of measurement error or flowmeter failure, when closing the housings on the sensor and core processor, make sure that the wires are not caught or pinched.

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Chapter 4 Output Wiring – Model 1700/2700 Analog Transmitters

4.1 Overview

This chapter explains how to wire outputs for Model 1700 or 2700 transmitters with the analog outputs option board (output option code A).

Note: If you do not know what outputs option board is in your transmitter, see Section 1.4.

It is the user’s responsibility to verify that the specific installation meets the local and national safety requirements and electrical codes.

4.2 Output terminals and output types

Table 4-1 describes the outputs and communication protocols available for the Model 1700 or 2700 analog transmitter.

4.3 Output wiring

Output wiring requirements depend on how you will use the analog functionality and the HART or Modbus protocol. This chapter describes several possible configurations:

• Figure 4-1 shows the wiring requirements for the mA output (terminals 1 and 2) and the frequency output (terminals 3 and 4).

• Figure 4-2 shows the wiring requirements for the mA output (terminals 1 and 2) if it will be used for HART communications in addition to the mA signal.

• Figure 4-3 shows the wiring requirements for RS-485 communications using the RS-485 output (terminals 5 and 6).

• Figure 4-4 shows the wiring requirements for connecting the transmitter to a HART multidrop network.

Table 4-1 Terminals and output types

Terminals Model 1700 output type Model 2700 output type Communication

1 & 2 Milliamp/Bell 202(1)

(1) The Bell 202 signal is superimposed on the mA output.

Milliamp/Bell 202(1) HART

3 & 4 Frequency • Frequency (default)

• Discrete

None

5 & 6 RS-485 RS-485 • HART (default)

• Modbus

30 Micro Motion® Model 1700 and 2700 Transmitters

Output Wiring – Model 1700/2700 Analog Transmitters

Note: If you will configure the transmitter to poll an external temperature or pressure device, you must wire the mA output to support HART communications. You may use either HART/analog single-loop wiring or HART multidrop wiring.

It is the user’s responsibility to verify that the specific installation meets the local and national safety requirements and electrical codes.

Figure 4-1 Basic analog wiring mA output loop 820 Ω maximum loop resistance

Frequency receiving device

00042

Output voltage level is +24 VDC ± 3%

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Figure 4-2 HART/analog single-loop wiring

Figure 4-3 RS-485 point-to-point wiring

820 Ω maximum loop resistance

For HART communications:

• 600 Ω maximum loop resistance

• 250 Ω minimum loop resistance

HART-

compatible host or controller

Note: The RS-485 communication wires must be shielded.

Other devices

RS-485A

RS-485B

Primary controller

Multiplexer

32 Micro Motion® Model 1700 and 2700 Transmitters

Figure 4-4 HART multidrop wiring with SMART FAMILY™ transmitters and a configuration tool

HART-compatible host or controller

HART-compatible transmitters

SMART FAMILY™

transmitters

Note: For optimum HART communication, make sure the output loop is single-point-grounded to an instrument-grade ground.

24 VDC loop power supply required for passive transmitters

600 Ω maximum resistance 250 Ω minimum resistance

Model 1700 or 2700 analog transmitter

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Chapter 5 Output Wiring – Model 1700/2700 Intrinsically Safe Transmitters

5.1 Overview

This chapter explains how to wire outputs for Model 1700 or 2700 transmitters with the intrinsically safe outputs option board (output option code D).

Note: If you do not know what outputs option board is in your transmitter, see Section 1.4.

Intrinsically safe outputs require external power. “External power” means that the terminals must be connected to an independent power supply. The output wiring instructions include power setup and power wiring.

Note: The term “passive” is sometimes used to describe externally powered outputs.

Output wiring requirements depend on whether the transmitter will be installed in a safe area or a hazardous area. This chapter describes several possible configurations:

• Section 5.3 describes wiring requirements for the outputs if the transmitter will be installed in a safe area.

• Section 5.4 describes wiring requirements for the outputs if the transmitter will be installed in a hazardous area.

It is the user’s responsibility to verify that the specific installation meets the local and national safety requirements and electrical codes.

5.2 Output terminals and output types

Table 5-1 describes the outputs and communication protocols available for the Model 1700 or 2700 intrinsically safe transmitter.

Note: If you will configure the transmitter to poll an external temperature or pressure device, you must wire the mA output to support HART communications. You may use either HART/analog single-loop wiring or HART multidrop wiring.

Table 5-1 Terminals and output types

Terminals Model 1700 output type Model 2700 output type Communication

1 & 2 Milliamp/Bell 202(1)

(1) The Bell 202 signal is superimposed on the mA output.

Milliamp/Bell 202(1) HART

3 & 4 Frequency • Frequency (default)

• Discrete

None

5 & 6 Not used Milliamp None

34 Micro Motion® Model 1700 and 2700 Transmitters

Output Wiring – Model 1700/2700 Intrinsically Safe Transmitters

5.3 Safe area output wiring

The following notes and diagrams are designed to be used as a guide for wiring the Model 1700 or Model 2700 outputs for safe area applications.

5.3.1 Safe area mA output wiring

The following 4–20 mA wiring diagrams are examples of proper basic wiring for the Model 1700 mA output or Model 2700 primary and secondary mA outputs.

Note: This diagram shows the Model 2700, which has a secondary mA output. If you are using the Model 1700, the secondary mA output does not exist.

Figure 5-1 Safe area basic mA output wiring

Note: See Figure 5-2 for voltage and resistance values.

VDC

VDC

Rload

Rload mA1 mA2

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Figure 5-2 Safe area mA output load resistance values

Figure 5-3 Safe area HART/analog single-loop wiring

12 14 16 18 20 22 24 26 28 30

Rmax = (Vsupply – 12)/0.023 If communicating with HART, a minimum of 250 Ω and 17.5 V is required

Supply voltage VDC (Volts)

E xt er na l r es is to r R lo ad

O hm s)

OPERATING REGION

Note: See Figure 5-2 for voltage and resistance values.

VDC

Rload

(250–600 Ω resistance)

HART-

compatible host or controller mA1

36 Micro Motion® Model 1700 and 2700 Transmitters

Figure 5-4 Safe area HART multidrop wiring with SMART FAMILY™ transmitters and a configuration tool

5.3.2 Safe area frequency/discrete output wiring

The following frequency/discrete output wiring diagram is an example of proper basic wiring for the Model 1700 transmitter’s frequency output or the Model 2700 transmitter’s frequency/discrete output.

Figure 5-5 Safe area frequency/discrete output wiring

HART-compatible host or controller

HART-compatible transmitters SMART FAMILY™ transmitter

Note: For optimum HART communication, make sure the output loop is single-point-grounded to an instrument-grade ground.

24 VDC loop power supply required for

HART 4–20 mA passive transmitters

600 Ω maximum resistance 250 Ω minimum resistance

Model 1700 or 2700 I.S. transmitter

Note: See Figure 5-6 for voltage and resistance values.

Counter

VDC

Rload

00042

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Figure 5-6 Safe area frequency/discrete output load resistance values

5.4 Hazardous area output wiring

The following notes and diagrams are designed to be used as a guide for wiring the Model 1700 or Model 2700 outputs for hazardous area applications.

5.4.1 Hazardous area safety parameters

The proper barrier selection will depend on what output is desired, which approval is applicable, and many installation-specific parameters. The information that is provided about I.S. barrier selection is intended as an overview. Refer to barrier manufacturers for more detailed information regarding the use of their products.