AMS AMS 9420 Wireless Vibration Transmitter Reference Manual Manuals & Guides

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Reference Manual

MHM-97408, Rev 22

September 2020

AMS 9420 Wireless Vibration Transmitter

Reference Manual

No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the written permission of Emerson.

Disclaimer

This manual is provided for informational purposes. EMERSON MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Emerson shall not be liable for errors, omissions, or inconsistencies that may be contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. Information in this document is subject to change without notice and does not represent a commitment on the part of Emerson. The information in this manual is not all-inclusive and cannot cover all unique situations.

Patents

The product(s) described in this manual are covered under existing and pending patents.

Where to get help

Software Registration

Phone:

Toll free 888.367.3774, option 2 (U.S. and Canada) +63.2.702.1111 (Rest of world)

Email:

Web:

wwcs.custserv@emerson.com

http://www.emerson.com/machineryhealthreg

Product Support

Emerson provides a variety of ways to reach your Product Support team to get the answers you need when you need them:

Phone

Toll free 800.833.8314 (U.S. and Canada) +1.512.832.3774 (Latin America) +63.2 702.1111 (Asia Pacific, Europe, and Middle East)

Web

ap-sms@emerson.com

http://www.emerson.com/en-us/contact-us

To search for documentation, visit http://www.emerson.com.

To view toll free numbers for specific countries, visit http://www.emerson.com/technicalsupport.

Reference Manual Contents

MHM-97408 September 2020

Chapter 1 Introduction.................................................................................................................. 6

1.1 Safety messages...............................................................................................................................6

1.2 Overview.......................................................................................................................................... 7

1.3 Considerations............................................................................................................................... 11

1.4 Return of materials.........................................................................................................................12

Chapter 2 Install the AMS 9420.....................................................................................................14

2.1 Sensors...........................................................................................................................................14

2.1.1 Sensor operating limits................................................................................................................14

2.1.2 Sensor handling...........................................................................................................................15

2.1.3 Sensor mounting/attachment tools and supplies........................................................................ 16

2.1.4 Prepare the sensor mount........................................................................................................... 17

2.1.5 Attach the sensors.......................................................................................................................18

2.1.6 Secure the sensor cables..............................................................................................................22

2.1.7 Conduit installation guidelines.................................................................................................... 23

2.1.8 Cable entry port installation guidelines........................................................................................24

2.1.9 Attach sensor wiring to the AMS 9420 terminals......................................................................... 27

2.2 Power the AMS 9420 with a power module.....................................................................................30

2.2.1 Power module installation and replacement................................................................................30

2.2.2 Physical installation..................................................................................................................... 32

2.3 Power the AMS 9420 with external DC power.................................................................................33

2.3.1 Emerson A9000P description of intended use..............................................................................33

2.3.2 Optional spacer........................................................................................................................... 33

2.3.3 Connect external DC power to Emerson wireless transmitters.....................................................34

2.3.4 Connect external DC power and ICP® accelerometer inputs to an AMS 9420............................... 36

2.4 Install the end cap.......................................................................................................................... 39

Position the antenna.......................................................................................................................40

2.5

2.6 Liquid Crystal Display (LCD)............................................................................................................ 42

2.6.1 Rotate the LCD............................................................................................................................ 42

2.6.2 Enable the LCD............................................................................................................................ 43

2.6.3 Turn on the LCD...........................................................................................................................44

2.7 Ground the transmitter.................................................................................................................. 45

Chapter 3 Configure the AMS 9420...............................................................................................46

3.1 Configuration overview.................................................................................................................. 46

3.1.1 Connect to a wired HART interface.............................................................................................. 48

3.1.2 Set the wireless network configuration........................................................................................50

3.1.3 Configuration options................................................................................................................. 52

3.1.4 Sensor configuration................................................................................................................... 53

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3.1.5 Measurement parameter units.................................................................................................... 55

3.1.6 Alert levels...................................................................................................................................55

3.1.7 Publishing mode..........................................................................................................................57

3.1.8 Update rate................................................................................................................................. 58

3.1.9 Minimize power consumption..................................................................................................... 58

3.1.10 Trend parameters......................................................................................................................59

3.1.11 Remove the power module....................................................................................................... 60

3.2 Configuration with a Field Communicator...................................................................................... 60

3.2.1 Field Communicator menu trees................................................................................................. 61

3.2.2 Field Communicator fast key sequences......................................................................................74

3.3 Configuration with AMS Device Manager........................................................................................76

3.3.1 Configure wireless network credentials in AMS Device Manager..................................................76

3.3.2 Right-click menu......................................................................................................................... 77

3.4 Configuration with AMS Machinery Manager................................................................................101

3.4.1 Advanced Diagnostics application.............................................................................................101

3.4.2 AMS 9420 Data Collection: Overview........................................................................................ 105

3.4.3 AMS 9420 publishing policy.......................................................................................................106

3.4.4 Maximum network size and publishing policy settings.............................................................. 108

3.4.5 Waveform or spectrum time..................................................................................................... 111

Chapter 4 Operation.................................................................................................................. 112

4.1 Verify the device is operational.....................................................................................................112

4.2 Verify operation with the integral LCD..........................................................................................112

4.3 Verify operation with a 475 Field Communicator..........................................................................112

4.4 Verify operation with Emerson Wireless Gateway.........................................................................113

Chapter 5 Overall Velocity, PeakVue, and temperature.............................................................. 115

5.1 Overall Velocity............................................................................................................................ 115

5.2 PeakVue....................................................................................................................................... 118

5.3 Temperature................................................................................................................................ 122

5.3.1 Relative temperature monitoring.............................................................................................. 123

5.3.2 Absolute temperature monitoring.............................................................................................123

Chapter 6 Mitigating EMI and RFI............................................................................................... 125

6.1 Accelerometer EMI and RFI considerations................................................................................... 125

6.2 Mitigate interference....................................................................................................................127

6.2.1 Use shorter cable lengths.......................................................................................................... 127

6.2.2 Use a conductive conduit.......................................................................................................... 127

6.2.3 Install ferrites.............................................................................................................................129

6.2.4 Reduce polarized interference...................................................................................................136

Appendix A Specifications and reference data............................................................................... 138

A.1 Functional specifications.............................................................................................................. 138

A.2 Physical specifications..................................................................................................................140

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A.3 Performance specifications.......................................................................................................... 141

A.4 Radio specifications......................................................................................................................141

A.5 Low-power sensor options........................................................................................................... 142

A.6 Dimensional drawings..................................................................................................................143

A.7 Device variable index....................................................................................................................144

Appendix B Product certifications................................................................................................. 145

B.1 Approved manufacturing locations.............................................................................................. 145

B.2 Wireless certifications.................................................................................................................. 145

B.3 Ordinary location certification (CSA)............................................................................................ 146

B.4 CE mark........................................................................................................................................146

B.5 Hazardous locations certifications................................................................................................ 147

B.6 RoHS 2 (2011/65/EU)................................................................................................................... 148

Appendix C LCD screen messages..................................................................................................149

Index .................................................................................................................................. 157

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Introduction Reference Manual

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1 Introduction

Topics:

• 1.1

• 1.2 Overview

• 1.3

• 1.4 Return of materials

Safety messages

Considerations

1.1 Safety messages

Instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations.

This AMS 9420 device complies with Part 15 of the FCC Rules. Operation is subject to the following conditions: This device may not cause harmful interference, this device must accept any interference received, including interference that may cause undesired operation.

This device must be installed to ensure a minimum antenna separation of 20 cm from all persons.

Refer to the following safety messages before performing an operation preceded by the warning symbol:

WARNING

Failure to follow these installation guidelines can result in death or serious injury. Only qualified personnel should install AMS 9420s.

Explosions could result in death or serious injury:

• Before connecting a Field Communicator in an explosive environment, make sure the

instruments are installed in accordance with applicable field wiring practices.

• Verify that the operating environment of the AMS 9420 is consistent with the

appropriate hazardous locations certifications.

• Do not remove the front electronics end cap or LCD cover while the device is in a

hazardous area.

Electrical shock can cause death or serious injury. Avoid contact with the leads and terminals. High voltage that may be present on leads can cause electrical shock.

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1.2 Overview

The manual

This Reference Manual applies to the 2.4 GHz WirelessHART version of the AMS 9420 for use with the Smart Power Module unless otherwise specified.

Use this manual to install, operate, and maintain the AMS 9420 Wireless Vibration Transmitter.

The transmitter

The AMS 9420 Wireless Vibration Transmitter is an installation-ready solution that monitors vibration and temperature in hard-to-reach locations. It also provides a variety of transmitter and sensor configurations.

Some of its features include:

• Support for up to 4 process variables with up to 3 user configurable alerts for each

process variable

• Support for storage of Waveform/Spectrum directly in AMS Machinery Manager

• Wireless output with >99% data reliability, delivering rich HART data, protected by

industry leading security (when operated as part of a well-formed network)

• Local operator interface with integral LCD that conveniently displays measured values

and diagnostics

• Simple and easy installation, used today for robust installations

Power options include two power modules and power adapter for external DC power.

The transmitter's main parts are shown in Figure 1-1 and are referenced in this document.

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Figure 1-1: AMS 9420 overview

A. Antenna

B. Housing

C. Front electronics end cap or LCD cover

Mounting post

E. Cable entry port (one on left and right)

F. Extended end cap or power module cover

1.3 Considerations

General

Electrical vibration sensors, such as accelerometers, produce low-level signals proportional to their sensed vibration. With simple HART configuration, the transmitter converts the low-level sensor signal to a wireless-enabled signal.

Commissioning

The transmitter can be commissioned before or after installation. You can commission it on the bench before installation to ensure proper operation and to be familiar with its functions.

Make sure the instruments are installed in accordance with applicable field wiring practices.

The AMS 9420 device is powered whenever the power module is installed. To avoid depleting the power module, remove it when the device is not in use.

Installation

When choosing an installation location and position, provide ample access to the transmitter. For best performance, the antenna should be vertical, with some space between objects in a parallel metal plane such as a pipe or metal framework. Pipes or framework may adversely affect the performance of the antenna.

Power Module

There are two power modules that may be used with the AMS 9420.

Where approved for use, Emerson recommends using the blue power module . The blue power module is equipped with two "D" size primary lithium/thionyl chloride cells, and features special power management circuitry for optimum performance with the AMS

9420. Each blue power module contains approximately 10 grams of lithium. The black

power module contains two “C” size primary lithium/thionyl chloride batteries. The black power module contains approximately 5 grams of lithium; therefore, the blue power module will operate the AMS 9420 for approximately twice as long as the black power module.

Note

When upgrading from the black power module to the blue power module, be sure to order an extended battery cover for each blue power module. To order an extended battery cover for the blue aluminum housing or the stainless steel housing, contact your local sales representative.

Under normal conditions, power module materials are self-contained and not reactive as long as the integrity of the batteries and power module pack are maintained. Take care to prevent thermal, electrical, or mechanical damage, and protect contacts to prevent premature discharge.

CAUTION

Use caution when handling power modules. Power modules may be damaged if dropped from heights in excess of 20 feet.

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Electrical

Emerson A9000Px series adapters

A power adapter is available to connect the AMS 9420 to an external 11-28 VDC power source. This is used in place of the power module.

When used with a barrier on the power input, the AMS 9420 has the same ratings for hazardous location requirements.

Power in and external sensors must be wired via separate entries. An external earth connection, where applicable, should be made to the

earth grounding point on the bottom of the housing. The full assembly shall maintain a minimum IP rating of IP20. Field wiring using multiconductor cable shall either have each conductor

enclosed in grounded metal shield or each conductor have a minimum of

0.25 mm (0.01 in) insulation thickness.

Sensor

Make sensor connections through the cable entry at the side of the connection head. Provide adequate clearance for cover removal.

Environmental

The transmitter operates within specifications for ambient temperatures between –40°F and 185°F (–40°C and 85°C).

Verify that the operating environment of the transmitter is consistent with the appropriate hazardous location certifications.

1.4 Return of materials

You may need to ship the device to an Emerson Product Service Center for return or maintenance. Before shipping, contact Emerson Product Support to obtain a Return Materials Authorization (RMA) number and receive additional instructions.

Emerson Product Support contact information:

Phone

Web

Toll free 800.833.8314 (U.S. and Canada) +1.512.832.3774 (Latin America) +63.2 702.1111 (Asia Pacific, Europe, and Middle East)

ap-sms@emerson.com

http://www.emerson.com/en-us/contact-us

Note

If the transmitter has been exposed to hazardous substances, a Material Safety Data Sheet (MSDS) must be included with the returned materials. An MSDS is required by law to be available to people exposed to specific hazardous substances.

Shipping considerations for wireless products (Lithium Batteries)

• The unit was shipped to you without the power module installed. Please remove the

power module prior to shipping the unit.

• Each blue power module contains two "D" size primary lithium-thionyl chloride battery

cells; each black power module contains two "C" size primary lithium-thionyl chloride battery cells. Primary lithium batteries are regulated in transportation by the U.S.

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Department of Transportation, and are also covered by IATA (International Air Transport Association), ICAO (International Civil Aviation Organization), and ADR (European Ground Transportation of Dangerous Goods).

• It is the responsibility of the shipper to ensure compliance with these or any other local

requirements. Please consult current regulations and requirements before shipping.

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2 Install the AMS 9420

Topics:

• 2.1

• 2.2 Power the AMS 9420 with a power module

• 2.3

• 2.4 Install the end cap

• 2.5 Position the antenna

• 2.6 Liquid Crystal Display (LCD)

• 2.7 Ground the transmitter

Before beginning installation procedures:

Insert the power module only when you are ready to commission the device.

Install the Emerson Wireless Gateway and ensure it functions properly before you activate the AMS 9420 or any other wireless devices. Power up wireless devices in order of proximity from the Emerson Wireless Gateway, beginning with the closest. This will result in a simpler and faster network installation.

Sensors

Power the AMS 9420 with external DC power

WARNING

If the sensor is installed in a high-voltage environment and a fault condition or installation error occurs, the sensor leads and transmitter terminals could carry lethal voltages. Use extreme caution when making contact with the leads and terminals.

2.1 Sensors

Each of the AMS 9420 signal inputs uses accelerometers to make vibration measurements. The term "sensor" applies to both an accelerometer and an accelerometer with embedded temperature; the word “accelerometer” refers to a sensor that measures only acceleration. The AMS 9420 uses special low-power sensors (available for purchase from Emerson) to reduce power consumption and increase power module life. The sensor is available with or without embedded temperature.

You can use 100 mV/g sensors with the AMS 9420 if you connect the sensors and external DC power to the Emerson A9000PS-A power adapter.

2.1.1 Sensor operating limits

Low-power sensors with 25 mV/g nominal sensitivity are required when connecting directly to the AMS 9420 terminals. The Emerson A9000PS-A adapter is required for ICP accelerometers with a nominal sensitivity of 100 mV/g.

Table 2-1: Standard, low-power sensor operational ranges

Channel DC bias range DC input range AC input range

Accelerometer 1 2–3 VDC 0–5 VDC 0.5–4.5 V (+/-80 g's peak)

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Table 2-1: Standard, low-power sensor operational ranges

Channel DC bias range DC input range AC input range

Accelerometer 2 2–3 VDC 0–5 VDC 0.5–4.5 V (+/-80 g's peak)

Temperature 1 N/A -40°C to 125°C N/A

The accelerometers require a DC bias. The AMS 9420 provides the necessary bias and measures it to verify correct sensor operation. The nominal bias voltage is 2.5 V. If the bias voltage is outside of the 2–3 V range, the device generates a failed alert for the associated sensor. The DC input range represents the operational DC range of the signal input. The AC input range represents the operational AC range of the signal input.

2.1.2 Sensor handling

Note

Each sensor requires a standard 1/4–28-inch mounting location.

CAUTION

Do not drop, hammer, or impact the sensor housing before, during, or after installation.

CAUTION

(continued)

Do not exceed the specified torque when tightening a stud-mounted sensor. Overtightening a sensor will damage the sensing element and void the manufacturer’s warranty.

CAUTION

Although the integral cable has a built-in strain relief, do not use excessive force when pulling the cable. Do not exert more than 5-lb of force directly on the sensor connection during installation. If possible, secure the cable to the machine near the point of sensor installation.

CAUTION

Do not exert more than 5-lb pull force directly on sensor/cable connection during wire pulls.

For sensors that have been mounted before pulling the cable through the conduit or raceway to the AMS 9420, leave the cable bundled and secured to the machine. Permanent signal degradation takes place when cables are damaged. Do not step on, kink, twist, or pinch cables. Also take note of the placement of the cable bundle. Do not place bundles in a manner that may cause strain at the sensor/cable connection.

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WARNING

For high-voltage environments, attach the sensor leads first before connecting to a power source.

Tip

Use Spade lugs to improve long-term reliability of sensor wiring.

2.1.3 Sensor mounting/attachment tools and supplies

Mounting tools

• Drill

• Spot face or end mill tool

The spot face tool attaches to a standard electric drill and provides a machined surface that is at least 1.1 times greater than the diameter of the sensor. The spot face tool also drills a pilot hole that can then be tapped for a stud mounted sensor.

You can purchase the spot face tool from Emerson (MHM P/N 88101), or you can substitute a spot face tool with similar characteristics as required. Contact your local sales representative for assistance.

Figure 2-1: Spot face or end mill tool

Attachment tools and supplies

• 40-200 inch-lb torque wrench with 1/8 in. hex bit

Suggested vendor: Grainger (P/N 4YA74) Description: 3/8" drive inch-lb torque wrench. You can substitute with any torque

wrench with a range of 40 to 70 inch-lb and less than 5 inch-lb increments.

• 1/4-28" taps and tap handle

• 9/16" open-end wrench

• 1/8" hex Allen key

• Wire brush

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• Plant-approved cleaner/degreaser

• Plant-approved semi-permanent thread locker (e.g. Loctite)

For epoxy mount, you also need the following:

• 2-part epoxy (e.g. Loctite Depend [Emerson P/N A92106] or comparable)

• A212 Mounting Pads

Figure 2-2: A212 mounting pad

• (Optional) Grinder – to create a sufficiently flat mounting surface

2.1.4 Prepare the sensor mount

Stud mount (preferred)

Stud mount provides increased reliability, improved frequency response, and increased signal sensitivity.

Prerequisites

The mounting location must provide a flat surface of at least 0.5 in. (12.7 mm) in diameter and a case thickness exceeding 0.4 in. (10.2 mm). If this is not possible, use the epoxy mount method instead

Procedure

Prepare the spot face or end mill tool by setting the drill bit depth to a minimum of

0.325 in. (8.255 mm).

Using a wire brush and plant-approved cleaner, clean and degrease the surface area.

Keeping the spot face and end mill tool perpendicular to the machine surface, drill

into the mounting location until the surface is smooth to the touch with no noticeable irregularities. This may require the spot face tool to remove as much as

0.04 in. (1.016 mm) or more from the surface.

Note

If the spot face is not uniform on all sides, it indicates that the spot face tool is not perpendicular to the mounting surface, and the resulting surface will not allow the sensor to be mounted properly. See Sensor mounting diagrams for illustrations of the correct milling process.

4. Using 1/4-28 in. tap set, tap a pilot hole to a minimum depth of 0.25 in. (6.35 mm).

See Sensor mounting diagrams for an illustration of tapping a pilot hole.

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Epoxy mount (alternative)

If it is not practical to drill into the machine casing, then the epoxy mount method is acceptable.

Procedure

1. If the equipment surface has a radius of curvature that is less than 4 in. (100 mm),

grind a flat surface approximately 0.5 in. (12.7 mm) in diameter.

2. Using a wire brush and plant-approved cleaner, clean and degrease the surface

area.

Using a 2-part epoxy (such as Emerson P/N A92106), spray the activator onto the mounting surface. Place a light coat of epoxy on the surface of the mounting pad and hold firmly against the machine spot face surface for 1 minute.

Note

If the adhesive does not set within 1 minute, it indicates that too much epoxy is applied or that the mounting surface is not prepared properly. Repeat steps 2–3.

2.1.5 Attach the sensors

Figure 2-3 shows a typical accelerometer, mounting stud, and mounting pad used with

the AMS 9420. The mounting pad is only necessary when doing an epoxy mount.

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Figure 2-3: Accelerometer, mounting stud, and optional mounting pad

A. accelerometer

B. mounting stud (included with the accelerometer)

C. mounting pad

Prerequisites

Whenever possible, mount sensors to the machine while pulling cables. If you have to mount the sensor at another time, secure the bundled cable to the machine and protect it from damage.

Procedure

1. Using a plant-approved cleaner/degreaser, remove any lubricating fluid used during

the tapping process and if necessary, clean the mounting stud threads.

2. Rub a small amount of semi-permanent thread locker onto the mounting location.

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Figure 2-4: Apply thread locker onto mounting location

3. Using a 1/8 in. Allen key (English mounting stud) or a 4 mm Hex Allen key (metric

mounting stud), loosely screw the mounting stud into the mounting location.

The mounting location is the machine surface when using stud mount and the mounting pad when using epoxy mount.

4. Using a torque wrench with 1/8 in. hex bit, torque to 7–8 ft-lb (9.5–10.8 N-m) to

tighten the mounting stud.

Figure 2-5: Tighten the mounting stud

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For stud mount: If the mounting stud is still not seated against the spot face after you apply the correct torque force, it indicates that the tap hole is not deep enough. Remove the mounting and tap a deeper hole.

5. Apply a thin coat of semi-permanent thread locker to the threads on the sensor

housing.

6. Place the sensor onto the mounting stud and hold it to create the least amount of

cable strain and cable exposure. While holding the sensor, hand-tighten the 9/16 in. captive nut and use a torque wrench with 9/16 in. open end to finish tightening to 2–5 ft-lb (2.7–6.8 N-m).

Figure 2-6: Hand-tighten the captive nut

If the mounting stud does not disengage from the sensor, use a flathead screwdriver to hold the stud and turn the hex nut counter-clockwise with a wrench.

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2.1.6 Secure the sensor cables

WARNING

All wiring should be installed by a trained and qualified electrician. Wiring must conform to all applicable local codes and regulations. Follow local codes and regulations regarding wire type, wire size, color codes, insulation voltage ratings, and any other standards.

Using an appropriately sized cable clamp, secure the sensor cable to the machine approximately 4–5 in. (100–125 mm) from the mounting location. Do not curl into a bending radius of less than 2.8 in. (71 mm).

Figure 2-7: Securing a cable with temporary cable anchor

If the pulling of cables is not currently scheduled, secure the bundled sensor cables so that no strain is placed on the integral sensor/cable connectors. Do not let the bundled cable hang from the sensors. Do not place cables on plant floors, maintenance access areas, and/or footholds that may cause damage to the cables.

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2.1.7 Conduit installation guidelines

WARNING

All wiring should be installed by a trained and qualified electrician. Wiring must conform to all applicable local codes and regulations.

• Adhere to IEEE 1100 specifications for grounding.

• Do not exceed a 40 percent fill for conduits.

• Route the conduit away from power trays using these guidelines:

6 in. 110 VAC

12 in. 220 VAC

24 in. 440 VAC

• Attach the conduit to the NPT threaded holes on the side of the AMS 9420.

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2.1.8 Cable entry port installation guidelines

Power leads and sensor leads enter the rear compartment of the transmitter housing through conduit openings on the left and right of the housing. Power leads and sensor leads must enter on opposite sides of the housing. Emerson recommends the sensor leads enter the same side where the sensor terminal screws are located. Depending on how the transmitter is powered, you may need to install two sensor cables into one cable entry port. When the transmitter uses a power module, both cable entry points are available for use with sensors. You can use the standard cable glands included with the transmitter for one sensor cable per cable gland. The included cable gland is not approved for use with two sensor cables. When the transmitter uses external DC power, an extra conduit body is required, and both sensor leads enter the same conduit opening. Refer to the installation drawing for details.

Note

Use cable glands to seal the cable entry ports. Ensure that the cable gland grommet fits the wire properly and does not leak. The wire must snugly fit in the grommet feed-through in the cable gland to prevent ingress of water and other contaminants. If using one of the grommets for the standard low-power accelerometers, use a cable with a diameter between 0.125 to 0.250 in. (3.175 - 6.35 mm) to maintain a good seal. If a good seal is not possible with the wire selected, use an alternative grommet that provides a good seal.

The following figures show suggested installations.

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Figure 2-8: AMS 9420 with extended power module and two sensors

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Figure 2-9: AMS 9420 with external DC power and two sensors

Notes

• When using two sensors with external DC power a dual cable gland adapter is required

(e.g. 'T'-adapter shown in Figure 2-9).

• An external earth connection, where applicable, should be made to the earth

grounding point on the bottom of the housing.

• If using a Stainless Steel housing, stainless steel adapters/glands are also

recommended.

• To ensure long term reliability a minimum of IP56 or NEMA 4 sealing is recommended

for the full assembly.

• All local wiring codes and regulations shall be followed.

When installed in a hazardous location, the following practices are also required:

• Both sensors must enter through the dual cable gland adapter with one sensor per

entry.

• The full assembly shall maintain a minimum IP rating of IP20.

• Field wiring using multiconductor cable shall either have each conductor enclosed in

grounded metal shield or each conductor have a minimum of 0.25 mm (0.01 in) insulation thickness.

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2.1.9 Attach sensor wiring to the AMS 9420 terminals

Prerequisites

This procedure applies to a typical AMS 9420 installation with low-power sensors. Lowpower accelerometers connect directly to the transmitter terminal block. For information about using ICP® accelerometers, refer to Power the AMS 9420 with external DC power.

• If you are using armor-jacketed cable longer than 3 meters, you must attach the

ferrites before attaching sensor wiring the AMS 9420 terminals. See Attach 3 ferrites to

an accelerometer with armor-jacketed cable.

• If the sensor signal wires are not equipped with spade lugs, Emerson recommends

installing them before proceeding.

Procedure

1. Tie the sensor's grounding wire (white with black stripe) to the ground screw inside

the AMS 9420. See callout E in the figures below.

2. Refer to the appropriate figure to connect the sensor signal wires.

Note

You can connect one or two accelerometers to the AMS 9420. You can connect only one accelerometer with a temperature sensor.

a) Insert a beryllium copper washer on top of each spade lug.

b) Tighten the screw to 15 in-lbs (1.7 N-m).

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Figure 2-10: AMS 9420 wiring with one accelerometer

A Sensor power Red wire

B Sensor signal White wire

C Unused Unused

D Sensor common Black wire

E Sensor grounding White wire with black stripe

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Figure 2-11: AMS 9420 wiring with two accelerometers

A Sensor power 2 red wires

B Sensor 1 signal White wire

C Sensor 2 signal White wire

D Sensor common 2 black wires

E Sensor grounding 2 white wires with black stripe

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Figure 2-12: AMS 9420 wiring with one accelerometer with embedded temperature

A Sensor power Red wire

B Vibration signal (Signal 1) White wire

C Temperature signal (Signal 2) Green wire

D Sensor common Black wire

E Sensor grounding Bare wire

2.2 Power the AMS 9420 with a power module

Emerson offers power modules to power the AMS 9420 for typical applications. The power module package includes more documentation. This section includes examples of using the Blue Power Module with the AMS 9420.

2.2.1 Power module installation and replacement

There are two power modules that may be used with the AMS 9420.

9420. Each blue power module contains approximately 10 grams of lithium.

The black power module contains two “C” size primary lithium/thionyl chloride batteries. The black power module contains approximately 5 grams of lithium; therefore, the blue power module will operate the AMS 9420 for approximately twice as long as the black power module.

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Actual power module life can vary dramatically based on the power module being used and on operating parameters, including whether high-resolution data such as vibration waveforms and/or spectra are being retrieved from the device.

Upgrading

If you need to upgrade from black power module to a blue power module, Emerson personnel must apply a new label to your transmitter.

Note

Handling

Under normal conditions, the power module materials are self-contained and are not reactive as long as the batteries and the power module pack integrity are maintained. Take care to prevent thermal, electrical, or mechanical damage. Protect the contacts to prevent premature discharge.

CAUTION

Use caution when handling the power module pack. The power module pack can be damaged if dropped from heights in excess of 20 feet.

WARNING

Power module hazards remain even when cells are discharged.

Environmental considerations

As with any battery, consult local, national, and international environmental rules and regulations for proper management of spent batteries. If no specific requirements exist, you are encouraged to recycle through a qualified recycler. Consult the materials safety data sheet for power module-specific information.

Shipping

The unit is shipped without the power module installed. Unless you are specifically instructed to do otherwise, always remove the power module pack from the unit prior to shipping.

The U.S. Department of Transportation, International Air Transport Association (IATA), International Civil Aviation Organization (ICAO), and European Ground Transportation of Dangerous Goods (ADR) regulate the transportation of primary lithium batteries

The shipper is responsible for complying with these or any other local requirements. Consult current regulations and requirements before shipping.

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2.2.2 Physical installation

The Blue Power Module (A0701PBU) has been designed with safety in mind. The connector is keyed so that it cannot be inserted incorrectly, and it uses a patented mechanism that enables it to be replaced while the transmitter is installed in a hazardous area. The installation procedure includes replacing the power module and extended battery cover.

Prerequisites

When replacing a standard Black Power Module with the extended life Blue Power Module, you also need to replace the smaller end cap (2.5 in / 70 mm) with the extended end cap (4.5 in / 115 mm).

Procedure

1. Inspect the power module for any obvious signs of damage.

Emerson's SmartPower Power Modules are designed to be rugged. The product design has been tested in environmental conditions such as extreme temperature, pressure, vibration and shock. In testing, it also was dropped repeatedly from 3m height without leading to an unsafe operating condition.

If there are any obvious signs of damage, do not install the power module. Refer to the Blue Power Module documentation for disposal or recycling of the power module.

2. Unscrew the power module cover from the AMS 9420.

Connect the power module to the AMS 9420. The power module has a keyed connection to prevent improper connection.

Figure 2-13: Blue Power Module (A0701PBU) connects using a keyed connection

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Note

Power up wireless devices in order of proximity from the Emerson Wireless Gateway, beginning with the closest. This will result in a simpler and faster network installation.

4. Close the extended end cap on the housing and tighten. Always ensure a proper

seal by installing the electronics housing covers so that metal touches metal, but do not over tighten.

2.3 Power the AMS 9420 with external DC power

Emerson offers Emerson A9000P series adapters to power the AMS 9420 with external DC power. The adapter package includes documentation, installation drawings, and other important instructions. You can also find the quick start guide on our website. This section includes some examples of using the power adapter with the AMS 9420.

2.3.1 Emerson A9000P description of intended use

The Emerson A9000P series adapters are available in two versions: Emerson A9000PA and Emerson A9000PS-A. They allow an Emerson wireless transmitter to be powered by external DC power. When installed with an appropriate safety barrier, they can be used in a hazardous location. Barrier requirements are described in the Emerson A9000Px Quick Start Guide and installation drawings included with the power adapter.

• Use either version to connect external DC power.

• Use the Emerson A9000PS-A to connect external DC power and up to 2 standard ICP

accelerometers with a nominal sensitivity of 100 mV/g.

Figure 2-14: Emerson A9000PA (left) and Emerson A9000PS-A (right)

2.3.2 Optional spacer

The spacer is required only when the transmitter has an extended endcap.

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Figure 2-15: Optional spacer

2.3.3 Connect external DC power to Emerson wireless transmitters

You can use all versions of the Emerson A9000P series adapters to connect external DC power to Emerson wireless transmitters. This example describes connecting the power adapter.

CAUTION

DC power should only be applied to the power adapter after it is wired and inserted in the transmitter terminal block.

Procedure

1. Connect the external DC power to the power adapter.

2. Connect the included green chassis ground cable to the power adapter ground and to the chassis ground point.

The connections are shown in detail in the installation drawing and an example is shown in

Figure 2-16.

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Figure 2-16: External DC power and included cable harness connected to the power adapter

A. Green chassis ground cable B. PWR C. PWR +

Slot E. Chassis ground point F. Green chassis ground cable

3. Push each wire through the slot.

4. Insert the power adapter into the receptacle on the transmitter terminal block.

5. If the transmitter has an extended end cap, insert the spacer into the end cap. Otherwise, the spacer is not required.

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2.3.4 Connect external DC power and ICP® accelerometer inputs to an AMS 9420

With the AMS 9420, use the Emerson A9000PS-A to connect external DC power and up to 2 standard ICP® accelerometers with a nominal sensitivity of 100 mV/g. This example describes connecting the power adapter.

Note

For a typical AMS 9420 installation, only connect external DC power to the power adapter. Low-power accelerometers connect directly to the transmitter terminal block.

CAUTION

DC power should only be applied to the power adapter after it is wired and inserted in the transmitter terminal block.

Prerequisites

Connect external DC power and green chassis ground cable to the power adapter. Refer to the example in Connect external DC power to Emerson wireless transmitters.

Procedure

1. Use the included cable harness to connect the power adapter sensor terminals to the AMS 9420, as shown in the installation drawing.

The cable harness has three wires: two colored wires and one bare wire. Each wire has a spade lug on one end and a ferrule on the other end. Connect the spade lugs to the terminal block. Connect the ferrules to the power adapter. Be careful to connect each wire to the matching terminal screw. The connections are shown in detail in the installation drawing and an example is shown in Figure 2-17

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Figure 2-17: Emerson A9000PS-A to AMS 9420 signal connections with included cable harness

Spade lug to AMS 9420 Cable harness wire Ferrule to Emerson

A9000PS-A

A 2 (Sig 1) color 1 (red shown) SIG1 D

B 3 (Sig 2) color 2 (black shown) SIG2 E

C 4 (Common) unshielded COM F

G Slot

2. Push each wire from the cable harness into the slot. It is easier to push the individual wires into the slot after connecting the ferrules.

3. Connect the leads from up to two standard ICP® accelerometers with a nominal sensitivity of 100 mV/g to the terminal screws on the Emerson A9000PS-A.

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Figure 2-18: Two ICP® accelerometers connected to the power adapter (rotated view)

A. S2B. S2+ C. S1-

S1+

E. S1 Shield F. S2 Shield

G. Slots

4. Push each signal cable wire into the slot.

5. Wrap the cable harness counter clockwise around the receptacle on the transmitter terminal block.

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Figure 2-19: Cable harness wrapped around the receptacle

6. Insert the power adapter into the receptacle.

7. If the transmitter has an extended end cap, insert the spacer into the end cap. Otherwise, the spacer is not required.

2.4 Install the end cap

Note

If you have configured the sensor and network but are not ready to commission the device, remove the power module to extend operating life.

Prerequisites

Ensure you have the appropriate end cap and spacer as required for your application.

Procedure

1. If required for your application, insert the spacer between the power module or power adapter and the extended end cap.

2. Attach the end cap. Always ensure a proper seal by installing the housing cover so that metal touches

metal and the black O-ring is no longer visible, but do not over tighten. A tight seal ensures that water, water vapor, or other gases do not penetrate into the housing.

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Figure 2-20: Sealing the end cap

A. Improperly sealed end cap. Black O-ring is still visible. B. Properly sealed end cap. Black O-ring is no longer visible.

3. Use a strapping wrench to tighten the housing cover to safety specification. Always ensure a proper seal by installing the housing cover so that metal touches

metal and the black O-ring is no longer visible, but do not over tighten. A tight seal ensures that water, water vapor, or other gases do not penetrate into the housing.

2.5 Position the antenna

Procedure

Position the antenna so it points upward, for optimal performance. The antenna should be approximately 3 ft. (1 m) from any large structure, building, or

conductive surface to allow for clear communication to other devices.

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Figure 2-21: Antenna positions and dimensions

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2.6 Liquid Crystal Display (LCD)

If you order an LCD, it is shipped attached to the transmitter.

2.6.1 Rotate the LCD

You may need to rotate the LCD depending on the mounting orientation of the device.

WARNING

Do not remove the front electronics end cap or LCD cover while the device is in a hazardous area.

Removing the cap while the device is in a hazardous area could cause an explosion which could result in death or serious injury.

CAUTION

The front electronics end cap or LCD cover is certified for hazardous areas in appropriate gas environments (check the nameplate on the device for details).

Figure 2-22: Installing the LCD

Procedure

1. Remove the LCD cover.

2. Insert the four-pin connector into the interface board, rotate to the correct position, and snap into place.

The pins can be plugged into any one of four locations depending on which angle of rotation is desired for the LCD screen.

If the LCD pins are inadvertently removed from the interface board, carefully reinsert the pins before snapping the LCD in place.

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After installation, you can remove the LCD by squeezing the two tabs and pulling gently. You can then rotate it in 90-degree increments and snap it back in place.

3. Attach the LCD cover. Always ensure a proper seal by installing the housing cover so that metal touches

metal and the black O-ring is no longer visible, but do not over tighten. A tight seal ensures that water, water vapor, or other gases do not penetrate into the housing.

Figure 2-23: Sealing the end cap

A. Improperly sealed end cap. Black O-ring is still visible. B. Properly sealed end cap. Black O-ring is no longer visible.

Important

Moving one LCD around to multiple devices, on an “as need” basis, is NOT recommended. This can cause reliability problems over time. The connector pins on the LCD are not designed for repeated connect/disconnect.

2.6.2 Enable the LCD

When you enable the LCD, the AMS 9420 displays information about its network state and its measurements. This is helpful for configuration, installation, and commissioning. The LCD provides a visual indication on the status of the device and shows its current measurements.

Transmitters ordered with the LCD are shipped with the display installed but with the LCD disabled/turned off. You need to enable the LCD using a 475 Field Communicator or using AMS Device Manager.

Enable the LCD using a 475 Field Communicator

1. Use the lead set to connect the Field Communicator to the AMS 9420 terminal block.

2. Turn on the Field Communicator.

3. Select Configure → Manual Setup → General Settings → LCD Mode → Periodic Display.

Options available for LCD configuration include:

• Not installed – Use this setting if the LCD is not installed.

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• Periodic Display – Use this setting to show only relevant data. This setting does

not extend the wake cycle.

• Troubleshooting Display – Use this setting when troubleshooting the

transmitter.

• Off – Use this setting to disable the LCD.

Enable the LCD using AMS Device Manager

Launch AMS Device Manager and locate the network where the AMS 9420 is

1. connected.

2. Right-click the AMS 9420 device and select

3. Click the General Settings tab and from the LCD Mode drop-down menu, select Periodic Display.

Options available for LCD configuration include:

• Not installed – Use this setting if the LCD is not installed.

• Periodic Display – Use this setting to show only relevant data. This setting does

not extend the wake cycle.

• Troubleshooting Display – Use this setting when troubleshooting the

transmitter.

• Off – Use this setting to disable the LCD.

Note

When operating the AMS 9420 with the Smart Power Module, disable the LCD in the transmitter configuration after installation to maximize power module life. While the LCD module itself consumes very little power, having it activated will alter the operating cycle of the transmitter in such a way that can impact the power module life by up to 15–20%.

2.6.3 Turn on the LCD

WARNING

Configure → Manual Setup.

Do not remove the front electronics end cap or LCD cover while the device is in a hazardous area.

Removing the cap while the device is in a hazardous area could cause an explosion which could result in death or serious injury.

CAUTION

The front electronics end cap or LCD cover is certified for hazardous areas in appropriate gas environments (check the nameplate on the device for details).

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Procedure

1. Remove the LCD cover.

2. Press the This displays the Tag name, Device ID, Network ID, Network Join Status, and Device Status screens.

3. Attach the LCD cover. Use a strapping wrench to tighten the cover until it will no longer turn and the black

O-ring is no longer visible. Refer to Figure 2-23 for an illustration on how to properly seal the end cap.

DIAG button to turn the LCD on.

2.7 Ground the transmitter

The transmitter operates with the housing, either floating or grounded. However, the extra noise in floating systems affects many types of readout devices. If the signal appears noisy or erratic, grounding the transmitter at a single point may solve the problem.

You can reduce electrostatic current in the leads induced by electromagnetic interference by shielding. Shielding carries the current to the ground and away from the leads and electronics. If the transmitter end of the shield is adequately grounded to the transmitter and the transmitter is properly grounded to the earth ground, very minimal current enters the transmitter.

If the ends of the shield are left ungrounded, a voltage is created between the shield and the transmitter housing, and between the shield and earth at the element end. The transmitter may not be able to compensate for this voltage, causing it to lose communication and/or generate an alarm. Instead of the shield carrying the current away from the transmitter, the current flows through the sensor leads and into the transmitter circuitry where it interferes with circuit operation.

Each accelerometer contains a drain wire that is connected to the sensor shield. This wire should be connected to the internal grounding screw attached to the housing near the terminal block.

Ground the transmitter in accordance with local, national, and international installation codes. You can ground the transmitter through the process connection, the internal case grounding terminal, or the external grounding terminal.

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3 Configure the AMS 9420

Topics:

• 3.1

• 3.2 Configuration with a Field Communicator

• 3.3

• 3.4 Configuration with AMS Machinery Manager

Configuration overview

Configuration with AMS Device Manager

3.1 Configuration overview

You can configure the AMS 9420 either prior to installation or after the device is installed at the measurement location. You do not need to physically install or connect to the transmitter to complete the configuration. The transmitter, however, reports an alert until the sensor is connected; this is the expected behavior.

Note

The specific user interface for performing the configuration varies depending on the host used.

Procedure

1. Connect to a wired HART interface. Skip this step if your AMS 9420 is purchased pre-configured from the factory.

2. Set the wireless network credentials (Network ID and Join Key) using wired

connection.

Perform this step for the device to join a wireless network. After the device has joined, you can complete the rest of the steps over a wireless link.

(Optional)

By default, the tag is VT xxxx, where xxxx is the unique radio ID on the wireless network. The device joins the network and operates correctly even if no changes are made, but it is usually preferable to name the device something meaningful for the specific application.

4. Specify the type of sensor installed (for example: 1 accelerometer, 1

accelerometer with temperature, or 2 accelerometers) and name the sensor.

The factory default configuration is one accelerometer named SENSOR 1. Complete this step for different configurations and name the sensor something meaningful for the specific application.

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5. Enter the sensor sensitivity setting.

For improved accuracy, replace the nominal sensitivity value of 25 mV/g (2.55 mV per m/s2) (default) with the value corresponding to your specific sensor. When using an 100 mV/g sensor with a power adapter, you need to divide the value by four. See page 53.

6. Specify the units (English, metric, or SI) that will be used for each parameter. By default, units are set to English, unless the device is shipped to Japan.

7. Specify which measurements (velocity, temperature, etc.) correspond to the

process variables PV, SV, TV, and QV.

By default, PV is the Overall Velocity on sensor 1, SV is the PeakVue measurement on sensor 1, TV is the sensor 1 bias voltage, and QV is the supply voltage.

8. Specify alert levels. Determine the thresholds at which measurement alerts will display and determine

the behavior of device alerts.

9. Specify how the parameters will be published (optimized mode or generic

mode).

By default, the device is configured to use generic mode as it provides the most consistent overall performance.

10. Specify how often the parameters are published (update rate). The default update rate is once every 60 minutes. A faster update rate is not

recommended, unless the device is powered by an external power source, as it significantly reduces the power module life.

11. Optimize for power consumption. Reduce the publish rate and set the LCD mode to Off to minimize power

consumption. As an additional step, you can configure the PowerSave mode settings to extend the power module life.

12. Configure trending of parameters. You can trend parameters in multiple locations such as in a plant historian, in AMS

Machinery Manager, and in a DCS control system.

13. If the device configuration will not be managed by a HART DCS (such as

DeltaV), specify whether AMS Machinery Manager can make configuration changes.

By default, the device is set for a DCS to manage the configuration, and changes from AMS Machinery Manager are not permitted. You can, however, allow AMS Machinery Manager to make configuration changes by enabling MHM Access Control from AMS Device Manager or from a Field Communicator.

14. If the device is licensed for the Advanced Diagnostics application (spectral data

retrieval), configure storage of energy bands, spectra, and waveforms in the AMS Machinery Manager database.

With the Advanced Diagnostics application, you can collect data on-demand, automatically at periodic intervals, or on alert. Store on Alert is the recommended operating mode.

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3.1.1 Connect to a wired HART interface

Unless the AMS 9420 is purchased pre-configured from the factory, you must connect it to a wired HART interface. This is to define device credentials that allow the device to communicate on your wireless network. You can also define other device configurations such as sensor type and alert thresholds at this time.

Notes

• Use the wired HART interface only for configuration. Dynamic variables (such as

measured vibration parameters) are not updated when communicating on the wired interface.

• The AMS 9420 does not communicate simultaneously on both the wired and wireless

HART interfaces. You will lose wireless connectivity when you connect to the wired HART interface. Configuration changes are not reflected in a wireless host until connection has been re-established. To avoid loss of synchronization, disconnect hosts relying on the wireless link when communicating with the device on the wired interface.

For example, if you are viewing a configuration screen in AMS Device Manager through a wireless link, and you leave this screen open while making changes with a Field Communicator, you will have to exit AMS Device Manager and then re-open it (or rescan the device) after the wireless connection has been restored in order to see the changes.

Procedure

1. Remove the transmitter back cover.

This exposes the terminal block and HART communication terminals.

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Figure 3-1: AMS 9420 terminal block

A. AMS 9420 COMM terminals (power module version)

2. Connect a power module, if there is not a power source already such as the power

adapter.

Figure 3-2: Field Communicator and power module connection

3. Configure using a Field Communicator, AMS Device Manager, or any HART-enabled

host.

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Press Send to send configuration changes to the transmitter.

The AMS 9420 enters “HART Listen” mode for communication on the wired interface. HART Listen is displayed on the optional LCD, if it is installed.

If the device is unable to enter the HART Listen mode during its boot sequence or while performing its real-time vibration measurement, retry the initial wired HART handshaking sequence.

If repeated attempts to establish wired communication fail, you can force the device into a HART Listen mode. When in a safe location, remove the transmitter front cover and press the CONFIG button once. The device enters HART Listen mode, and it remains in this mode until you press the CONFIG button, the power cycles, or no activity is seen on the wired interface for three minutes. Pressing the CONFIG button a second time causes the device to exit HART Listen mode.

WARNING

Do not remove the front electronics end cap or LCD cover while the device is in a hazardous area.

Removing the cap while the device is in a hazardous area could cause an explosion which could result in death or serious injury.

CAUTION

The front electronics end cap or LCD cover is certified for hazardous areas in appropriate gas environments (check the nameplate on the device for details).

Exposing the electronics to a production environment may allow particulates, moisture, and other airborne chemicals to enter into the device, which could lead to contamination and potential product performance issues. In all cases, whenever opening the front end cap, be sure to seal it completely afterwards by tightening until the black O-ring is no longer visible. For an illustration on how to properly seal the end cap, see Figure 2-23.

4. When configuration is complete over the wired HART interface, disconnect the

transmitter from the communication wires to re-establish wireless communication. This may take several minutes.

3.1.2 Set the wireless network configuration

This enables the transmitter to communicate with the Emerson Wireless Gateway and with other systems. This is the wireless equivalent of connecting wires from a transmitter to a control system input.

Procedure

1. From the Emerson Wireless Gateway, click System Settings

Network Settings to obtain the Network ID and Join Key.

2. Using a Field Communicator or AMS Device Manager with a wired modem, enter

the Network ID and Join Key so that they match the Network ID and Join Key from the Emerson Wireless Gateway.

→ Network →

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Note

If the Network ID and Join Key are not identical to the gateway settings, the AMS 9420 will not communicate with the network.

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3.1.3 Configuration options

The AMS 9420 configuration options control the following operations:

• How measurement results are reported and how often are they reported

• The number and type of sensors installed

• How and when alerts are generated

Table 3-1 shows the default device configuration. You can change these configurations

from AMS Device Manager or from a Field Communicator.

Table 3-1: Default device configuration

Configuration option Default value

Publishing mode

Update rate

PowerSave mode

LCD mode

Power source

MHM Access Control

Write Protect

Sensor Configuration

Sensor type 1 Accelerometer (sensor 2 not installed)

Sensor sensitivity setting 25 m V/g

Velocity Fmax 1000 Hz

PeakVue true Fmax 1000 Hz

Velocity spectrum lines of resolution 400 lines

PeakVue spectrum lines of resolution 1600 lines

Units

Generic

60 minutes

PowerSave Skip Multiplier of 1X

Off

Power module/battery

Disabled

English Overall velocity: in/s RMS

PeakVue: g's peak Temperature: °C

Variable mappings

PV Overall velocity, sensor 1

SV PeakVue, sensor 1

TV Bias, sensor 1

QV Supply voltage

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3.1.4 Sensor configuration

Possible sensor configurations and variable mappings

The AMS 9420 can be installed with two accelerometers, or with one accelerometer with an embedded temperature sensor. Table 3-2 shows the possible sensor configurations and variable mappings.

Table 3-2: Possible sensor configurations and variable mappings

Available process variables based on sensor configuration

Dynamic process

variables

Sensor 1: Accelerometer

Sensor 2: Not Installed

Sensor 1 and 2: Accelerometer

with Temperature

Sensor 1: Accelerometer Sensor 2: Accelerometer

Unmapped device

variables

Overall Velocity Sensor 1 Overall Velocity Sensor 1 Overall Velocity Sensor 1

PeakVue Sensor 1 PeakVue Sensor 1 PeakVue Sensor 1

Bias Sensor 1 Sensor Temperature Overall Velocity Sensor 2

Supply Voltage Supply Voltage PeakVue Sensor 2

Bias Sensor 1

Ambient Temperature

Bias Sensor 1

Bias Sensor 2

Ambient Temperature

Supply Voltage

Sensor sensitivity setting

The AMS 9420 does not know if whether you have connected the low-power sensors directly to the terminal block or if you have connected standard 100 mV/g ICP® sensors through the Emerson A9000PS-A adapter. In both cases, it expects to see a sensor sensitivity of 25 mV/g, which is the default setting for an AMS 9420.

For the sensor sensitivity setting, you can leave setting in the DD at the nominal value (i.e. 25 mV/g), or you may enter the actual sensitivity documented on the calibration sheet for the accelerometer. If this is a low power sensor, this value will usually be between 24 and 26 mV/g. Simply enter this into the DD for the sensitivity of that sensor.

For a 100 mV/g sensor, you will need to divide the actual sensitivity by 4, and enter that value into the DD. For instance, if the actual sensitivity of an ICP sensor is 96.4 mV/g, then you would divide by 4 and enter 24.1 mV/g.

Each sensor is characterized at the factory to determine the precise sensitivity. For a standard low-power sensor provided by Emerson, this information is included with the sensor, in the form of a certificate, and may be cross-referenced with the serial number as shown in Figure 3-3.

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Figure 3-3: Calibration certificate

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3.1.5 Measurement parameter units

Table 3-3 shows the measurement parameters and available units that can be configured

for each parameter.

Table 3-3: Measurement parameter units

Parameter Units

Velocity (Overall 1, Overall 2)

PeakVue maximum value (PeakVue 1, PeakVue 2)

Temperature (Temperature 2, Ambient)

Sensor Bias (Bias 1, Bias 2) V

Supply Voltage V

3.1.6 Alert levels

The AMS 9420 sets HART status bits to indicate when measured values exceed the configured thresholds. Each measured value has three levels: Advisory, Maintenance, and Failed that can be set independently. These thresholds are pre-configured at the factory to reasonable generic values for single-stage, electric motor-driven equipment trains operating at 1200–3600 RPM.

The level at which these thresholds should be set depends on the type of equipment being monitored and on your specific process.

One rule of thumb for vibration is to examine the current level at which the equipment is operating. Assuming the equipment is in good working condition, set the Advisory level at 2x the current value (or at a minimum of 0.05 in/s RMS, whichever is greater), set the Maintenance level at 4x the current value, and set the Failed level at 8x the current value. For example, if the current value for Overall Velocity is 0.1 in/s, set the Advisory threshold at 0.2 in/s, the Maintenance threshold at 0.4 in/s and the Failed threshold at 0.8 in/s. While this type of vibration program is not recommended, it can provide a starting point when no other information is available.

mm/s RMS in/s RMS

m/s g’s

°C °F

Table 3-4: Default alert thresholds for vibration

Advise Maintenance Failed

Alert limits

Overall velocity (sensor 1, 2)

PeakVue (sensor 1, 2)

Sensor temperature

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Default value

0.14 in/sec

3.556 mm/s

6 g's

58.8399 m/s

65°C

149°F

notification

Report

Yes

Default value

0.35 in/sec

8.89 mm/s

10 g's

98.0665 m/s

75°C

167°F

notification

Report

Yes

Default value

1 in/sec

25.4 mm/s

15 g's

147.09975 m/s

85°C

185°F

notification

Report

Yes

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Table 3-4: Default alert thresholds for vibration

Advise Maintenance Failed

Alert limits

Bias (sensor 1, 2)

Ambient temperature

Supply voltage <6.0 V No <5.7 V Yes <5.3 V* Yes

*These are read-only parameters and cannot be modified.

Default value

– – – –

Report

notification

(continued)

Default value

Report

notification

Default value

Above: >3V Below: <2V

Above: 85°C

(185°F)*

Below: -40°C

(-40°F)*

Report

notification

Yes*

A good rule of thumb for establishing the PeakVue alert levels is to use the rule of 10's. This applies for most rolling element bearing equipment with a turning speed between 900 and 4000 CPM. Using this approach, the Advisory alert would be set at 10 g's, the Maintenance alert at 20 g's, and the Failed alert at 40 g's. In general, PeakVue alert levels can then be interpreted as follows:

10 g's Indication of Abnormal Situation

20 g's Serious Abnormal Situation - Maintenance Plan Required

40 g's Critical Abnormal Situation - Implement Maintenance Plan

For more information on PeakVue, see PeakVue.

The default alert thresholds for temperature correspond closely to a generic open dripproof (ODP) motor with class F insulation and a service factor of 1.15, operating at an ambient temperature of 40°C or below and at an altitude of 1000 meters or below . These values are also reasonable thresholds to use when there is no knowledge of the process, the type of machinery, or the operating environment. For more information, see Overall

Velocity, PeakVue, and temperature.

Table 3-5: Default alert thresholds for temperature

Parameter

Temperature

Advisory Maintenance Failed

Level Enabled Level Enabled Level Enabled

149°F

(65°C)

Yes

167°F (75°C)

Yes

185°F (85°C)

Yes

The configurable device alerts include accelerometer bias and supply voltage. The default settings for these alerts are shown in Table 3-6.

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Table 3-6: Default levels for configurable device alerts

Parameter

Accelerometer

Bias

Supply Voltage < 6.0 V No < 5.7 V Yes < 5.3 V Yes

Advisory Maintenance Failed

Level Enabled Level Enabled Level Enabled

N/A N/A N/A N/A < 2 V or > 3 V Yes

Notes

• The supply voltage measurement is made under load conditions. The supply voltage

may read differently with the AMS 9420 versus other Emerson transmitters or multimeters.

• Prior to sensor connection, it is normal to see alerts related to bias failure. These alerts

go away when the sensor is installed correctly.

• When any measured process parameter (Velocity, PeakVue, or Temperature) exceeds

the configured Advisory, Maintenance, or Failed threshold, this causes an “Advisory” indication that you can view from AMS Device Manager (or in another graphical host). This indicator itself does not set a status bit.

3.1.7 Publishing mode

The AMS 9420 can publish in either of two modes: optimized or generic (default).

Optimized mode uses less power by combining a large amount of information into a single command. In this mode, only the four standard process variables (PV, SV, TV, and QV) are published at the specified update interval and cached in the Smart Wireless Gateway. When values are cached in the gateway, it is not necessary to wake the device for the host system to be able to read the variables. The other variables are still available, but any request to read one of them wakes the device and consumes power.

Generic mode publishes all the process variables the device can produce. This mode requires three publish messages, which requires approximately 5% more power.

If you are only trending measurements mapped to PV, SV, TV, and QV, use optimized mode. If you are trending additional variables, use generic mode.

The following table shows a typical mapping example and what is included in optimized mode and generic mode.

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Table 3-7: Typical mapping example showing optimized and generic mode

Parameter Value Type Metric Units Emerson

Process Variables

Device Variables

Other Status Bits (including

Overall Velocity 1 Real Number mm/s • •

PeakVue 1 Real Number g's • •

Overall Velocity 2 Real Number mm/s • •

PeakVue 2 Real Number g's • •

Sensor Bias 1 Real Number V •

Sensor Bias 2 Real Number V •

Supply Voltage Real Number V •

Ambient Temperature Real Number °C •

Device_Malfunction)

3.1.8 Update rate

The default update rate is 60 minutes. This is the maximum (fastest) recommended update rate. You can change this at commissioning or at any time through AMS Device Manager, a Field Communicator, or the Smart Wireless gateway web server. You can set the update rate from 1 minute to 1 hour.

Note

If the device uses a power module, and is configured to publish at the fastest allowable update rate (once per minute), the power module is expected to last only about 2-3 months. For faster update rates, if your application allows it, use an external DC power option.

Generic Burst

Optimized Mode

Bit (i.e. 0 or 1) None • •

Mode

3.1.9 Minimize power consumption

The primary way to minimize power consumption is to reduce the publish rate.

Two other configuration settings that affect power consumption are:

• LCD (Liquid Crystal Display)

• PowerSave mode

LCD

Disable the LCD after installation is complete if it is not required during normal operation. It is neither necessary nor sufficient to physically remove the LCD; it must be disabled through configuration in order to save power. From AMS Device Manager, select the wireless network where the transmitter is connected, right-click the transmitter and select Configure → Manual Setup → General Settings tab → LCD Mode → Off.

Note

Disabling the LCD (not removing it, just disabling it) through configuration provides power savings of about 15–20%.

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Leave the LCD installed even if it is disabled to provide valuable diagnostic information. When in a safe location, you can view the LCD by removing the front cover and pressing the DIAG button. This wakes the device and displays current information. This can be beneficial for taking a quick reading and to aid in troubleshooting.

WARNING

Do not remove the front electronics end cap or LCD cover while the device is in a hazardous area.

Removing the cap while the device is in a hazardous area could cause an explosion which could result in death or serious injury.

CAUTION

The front electronics end cap or LCD cover is certified for hazardous areas in appropriate gas environments (check the nameplate on the device for details).

PowerSave mode

PowerSave mode is available in AMS 9420 devices that are Rev. 3 or later and it enables the device to make measurements less frequently, thereby conserving power. This is ideal when either power module life is more critical than the acquisition rate or when changes in vibration are only expected to occur over extended periods of time.

You can configure the settings for the PowerSave mode in AMS Machinery Manager (MHM Access Control must first be enabled) and in AMS Device Manager. The specific field is referred to as PowerSave Skip Multiplier. It is the number of times the transmitter skips data acquisitions between updates to the gateway.

At any point, the effective acquisition rate for the AMS 9420 is defined as:

Effective Acquisition Rate = (Update Rate) x (PowerSave Skip Multiplier)

Valid settings for the PowerSave Skip Multiplier range from 1X to 24X. In order to extend power module life, it should only be combined with a long update rate such as 60 minutes (54 minutes may be optimal for older versions of the AMS 9420). When this value is set to 1X, the AMS 9420 acquires a new reading at the update rate. A PowerSave Skip Multiplier of 2X combined with a 60-minute update rate results in a new acquisition every 120 minutes (every two hours). Similarly, a PowerSave Skip Multiplier of 24X with a 60-minute update rate results in a new acquisition every 1440 minutes (once per day).

3.1.10 Trend parameters

You can trend parameters in multiple locations such as in a plant historian or in AMS Machinery Manager. The method for configuring this functionality is contained in the associated software and the details of all the possibilities are beyond the scope of this

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manual. This manual only indicates some of the general capabilities and version requirements.

You can trend values in essentially any host that accepts Modbus or OPC inputs. Configure OPC tags and Modbus registers for wireless devices in the Smart Wireless Gateway web interface. Refer to the Smart Wireless Gateway User Manual for additional information. The settings in the gateway and the host must be consistent and entered in both locations (for example, Modbus register definitions).

DeltaV integrates native wireless I/O devices on the control network. Refer to the DeltaV documentation for more information on the required version. You can manage wireless devices as native HART devices, and trend variables accordingly. This type of installation also allows richer alerting and diagnostics because the full HART capabilities are available.

Ovation 3.3 or later also integrates the Smart Wireless Gateway with all the associated benefits of HART.

AMS Machinery Manager 5.4 or later supports HART functionality to read configuration and alert information, as well as the dynamic parameters from the AMS 9420. This allows AMS Machinery Manager to auto-discover all of the devices on the wireless mesh as well as the specific sensor configurations, units settings, and variable mappings for AMS 9420 devices.

Also, with AMS Machinery Manager and AMS 9420 devices (that are licensed for the Advanced Diagnostics application), you can trend Energy Band parameters and collect spectrum and waveform information. For more information, see Advanced Diagnostics

application.

DeltaV versions prior to 10.3 and Ovation versions prior to 3.3, though not integrated through HART, accept Modbus values from the wireless devices. DeltaV also accepts OPC values.

3.1.11 Remove the power module

The AMS 9420 is powered whenever the power module is installed. To avoid depleting the power module, remove it when the device is not in use. If you have configured the sensor and network but are not ready to commission the device, remove the power module to extend operating life.

Procedure

1. Disconnect the communication leads.

2. Remove the power module.

Replace the transmitter cover.

3.2 Configuration with a Field Communicator

You can configure the AMS 9420 using a 475 Field Communicator. Follow the connection diagram in Figure 3-2. For instructions on using the AMS Trex™ Device Communicator, refer to the AMS Trex Device Communicator User Guide.

A Rev 4 DD is recommended when using a 475 Field Communicator to configure the AMS

9420. The DD for the AMS 9420 is located on the DVD that came with the transmitter.

Refer to the Field Communicator User’s Manual for more details on DDs or go to http://

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www.emerson.com/en-us/catalog/ams-475-field-communicator for instructions on adding a DD for AMS 9420.

The AMS 9420 requires 475 Field Communicator System Software version 3.2 or later.

3.2.1 Field Communicator menu trees

Figure 3-4 through Figure 3-15 show the 475 Field Communicator configuration menu

trees for AMS 9420 using a Rev 4 DD. For ease of operation, you can access some common tasks in several locations of the menu structure.

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Figure 3-4: Field Communicator menu tree for AMS 9420, one accelerometer: 1 of 4

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Figure 3-5: Field Communicator menu tree for AMS 9420, one accelerometer: 2 of 4

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Figure 3-6: Field Communicator menu tree for AMS 9420, one accelerometer: 3 of 4

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Figure 3-7: Field Communicator menu tree for AMS 9420, one accelerometer: 4 of 4

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Figure 3-8: Field Communicator menu tree for AMS 9420, one accelerometer with temperature: 1 of 4

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Figure 3-9: Field Communicator menu tree for AMS 9420, one accelerometer with temperature: 2 of 4

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Figure 3-10: Field Communicator menu tree for AMS 9420, one accelerometer with temperature: 3 of 4

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Figure 3-11: Field Communicator menu tree for AMS 9420, one accelerometer with temperature: 4 of 4

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Figure 3-12: Field Communicator menu tree for AMS 9420, two accelerometers: 1 of 4

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Figure 3-13: Field Communicator menu tree for AMS 9420, two accelerometers: 2 of 4

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Figure 3-14: Field Communicator menu tree for AMS 9420, two accelerometers: 3 of 4

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Figure 3-15: Field Communicator menu tree for AMS 9420, two accelerometers: 4 of 4

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3.2.2 Field Communicator fast key sequences

Note

The following fast key sequences assume that you are using the 475 Field Communicator with a Rev 4 DD. Press Send to save the changes to the device.

Table 3-8: AMS 9420 network configuration

Key sequence Menu items

Network ID Broadcast Info

2, 2, 1 (Manual Setup)

2, 1 (Guided Setup)

Join Device to Network Configure Publishing Configure Update Rate Transmit Power Level Default Burst Config

Configure Sensors Configure Variable Mapping Configure Units Alert Limits Sensor Power Enable Join Device to Network Configure Publishing Configure Update Rate

Table 3-9: AMS 9420 common fast key sequences

Function Key sequence Menu items

LCD Mode Power Source

General settings 2, 2, 3 (Manual Setup)

Alert setup 2, 3

Update rate

Publishing mode

Write protect 2, 2, 3, 5 (Manual Setup) Write Protect

2, 1, 8 (Guided Setup) 2, 2, 1, 5 (Manual Setup)

2, 1, 7 (Guided Setup) 2, 2, 1, 4 (Manual Setup)

Advanced Config Units Write Protect MHM Access Control

Overall Velocity PeakVue Bias Ambient Temperature Supply Voltage

Configure Update Rate

Configure Publishing

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Table 3-9: AMS 9420 common fast key sequences

Function Key sequence Menu items

Power options 2, 2, 3, 2 (Manual Setup) Power Source

MHM Access Control 2, 2, 3, 6 (Manual Setup) MHM Access Control

Supply power to sensor 2, 1, 5 (Guided Setup) Sensor Power Enable

Configure variable mapping 2, 1, 2 (Guided Setup) Configure Variable Mapping

Device reset 3, 6, 5

(continued)

Device Reset Restore Factory Default Settings

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3.3 Configuration with AMS Device Manager

3.3.1 Configure wireless network credentials in AMS Device Manager

Prerequisites

Before performing operations in AMS Device Manager, first scan the AMS 9420 with a

wired HART modem. Right-click the HART Modem icon Scan All Devices.

Note

Configuring the wireless network is only applicable using a wired HART modem and cannot be done using WirelessHART devices.

Procedure

in Device Explorer and select

1. Right-click the AMS 9420 device and select Methods

2. Enter the network ID for the wireless network in the Join Device to Network screen and click Next.

You can obtain the network ID from the Smart Wireless Gateway web server. Click Setup → Network → Settings.

3. Enter the Join Key in the screens that follow, and click Next.

4. Select the Accept new join key option, and click Next.

5. Click Finish when done.

→ Join Network.

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3.3.2 Right-click menu

The right-click menu of the AMS 9420 device in AMS Device Manager provides a quick link to the Configure, Compare, Service Tools, and Overview windows, as well as to other context menus available for the device. This document only discusses the Overview, Configure, and Service Tools windows; for more information on the other context menus, refer to AMS Device Manager Books Online.

In the Device Explorer view, select the wireless network where the transmitter is connected and right-click the transmitter to display the context menus.

Figure 3-16: AMS 9420 right-click menu

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Overview

Figure 3-17: Overview window

The Overview window provides a glimpse of the status of the CSI 9420, including the primary purpose variables associated with it.

You can also access the following shortcuts from this page:

• Device Information

• Configure Sensors

• Join Device to Network

• Acquire New Measurement

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Device Information

From the Overview window, click Device Information to display relevant device information.

Figure 3-18: Device Information window

Click the Identification tab to display the device tag, long tag, device type, serial number, identifier, and description.

Click the Revisions tab to display the universal, field device, software, hardware, and DD revision numbers.

Click the Radio tab to display the device MAC address, manufacturer, device type, revision numbers, and transmit power level.

Click the Security tab to display Write Protect information and to view whether MHM Access Control is enabled.

Click the License tab to display installed licensable features such as the Advanced Diagnostics application.

Click License tab → Configure License to configure/change installed licenses.

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Configure Sensors

From the Overview window, click Configure Sensors to display installed sensors and current sensor configurations.

Figure 3-19: Sensor Configuration window

Click the Select Sensor Configuration drop-down to select a sensor configuration to apply to the installed sensors.

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Join Device to Network

From the Overview window, click Join Device to Network to enter network identifiers and join keys that will enable the transmitter to join a wireless network.

Figure 3-20: Join Device to Network window

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Acquire New Measurement

From the Overview window, click Acquire New Measurement to display measurement statistics for Velocity, PeakVue, bias, and sensor temperature for installed sensors. This also displays supply voltage and ambient temperature information for the transmitter.

Figure 3-21: Measurement Statistics window

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Configure

Figure 3-22: Configure window

The Configure window lets you configure device settings.

Important

To be able to edit configuration settings, select Current in the Time drop-down menu at the bottom of the screen.

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Guided Setup

Guided Setup lets you configure device settings in a guided step-by-step process.

Click Configure Sensors to display or configure installed sensors.

Click Configure Variable Mapping to display or specify which measurements are reported as the Primary, Secondary, Third, and Fourth variables.

Click Configure Units to configure units for Overall Velocity, PeakVue, and temperature.

Click Alert Limits to define the lower range and upper range values and alert limits for Advisory, Maintenance, and Failure for each of the process variables. You can also configure alert reporting from here.

Click Sensor Power Enable to supply power to the sensor for a specific amount of time.

Note

Sensor Power Enable is only available when the device is connected to AMS Device Manager using a USB or serial HART modem and when the device is connected to a Field Communicator. This feature is not available when the device is connected to AMS Device Manager using a WirelessHART connection.

Click Join Device to Network to enter network identifiers and join keys that will enable the transmitter to join a wireless network.

Click Configure Publishing to set how parameters are published (generic or optimized).

Click Configure Update Rate to set how often the device acquires and reports new measurements (update rate) and to specify the number of times the transmitter skips data acquisitions between updates to the gateway (PowerSave Skip Multiplier).

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Manual Setup

Manual Setup lets you configure device settings manually.

Click the Wireless tab to display wireless network information for the transmitter.

Figure 3-23: Wireless tab

Click Join Device to Network to enter network identifiers and join keys that will enable the transmitter to join a wireless network.

Click Configure Publishing to set how parameters are published (generic or optimized).

Click Default Burst Configuration to reset the burst configuration to default values.

Click Refresh Effective Acquisition Rate to refresh the value in the Effective Acquisition Rate field.

Click the Sensor tab to display current sensor configurations. You can also edit the sensor sensitivity value from this page.

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Figure 3-24: Sensor tab

Click Configure Sensor x to configure the parameters for the specific sensor.

Click Restore Sensor Default to reset the sensor parameters to default values.

Click the General Settings tab to display or edit general transmitter settings.

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Figure 3-25: General Settings tab

Click the LCD Mode drop-down to enable or disable the LCD, or to set it to troubleshooting mode.

Click the Power Source drop-down to select the transmitter power source.

Select the units for measurement variables from the Overall Velocity, PeakVue, and Temperature drop-down menus.

Click the MHM Access Control drop-down to enable or disable Access Control for AMS Machinery Manager. Access Control allows AMS Machinery Manager to make changes to the AMS 9420 configuration.

CAUTION

If the device will be commissioned in a HART DCS host (e.g., DeltaV or Ovation), do not enable AMS Machinery Manager to make changes to the configuration.

Click the Write Protect drop-down to specify whether variables can be written to the device.

Click the Mapping tab to specify which measurements are reported as the Primary, Secondary, Third, and Fourth variables.

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Figure 3-26: Mapping tab

Click the Device Information tab to display the device tag, long tag, device type, serial number, device identifier, and description, and to display the universal, field device, software, hardware, and DD revision numbers.

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Figure 3-27: Device Information tab

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License tab

Click the License tab to display installed licensable features such as the Advanced Diagnostics application.

Figure 3-28: License tab

Click Configure License to configure/change installed licenses.

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Alert Setup

Alert Setup lets you configure the upper and lower range values and alarm limits for Overall Velocity, PeakVue, Bias, Sensor Temperature, Ambient Temperature, and Supply Voltage.

Figure 3-29: Alert Setup

Click the corresponding sensor/device variable tab and select the Report Advisory, Report Maintenance, or Report Failure check boxes to generate alarms when actual measured

values exceed the thresholds specified. When these check boxes are not selected, no alarm is reported.

Click Restore Defaults to restore default alarm thresholds for the selected variable.

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Service Tools

Figure 3-30: Service Tools window

The Service Tools window displays alert conditions. These include hardware and software malfunctions or parameters with values beyond specifications.

Alerts

Click Alerts to display active alerts for the device.

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Variables

Click Variables to display graphical gauges of sensor and device variables.

Figure 3-31: Variables

Click the Mapped Variables tab to display graphical gauges of variables and their mappings.

Click the Sensor Variables tab to display graphical gauges of the variables for each connected sensor.

Click the Device Variables tab to display graphical gauges of ambient temperature and supply voltage variables.

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Trends

Click Trends to display hour-long trends for each of the four measurement variables (PV, SV, TV, and QV).

Figure 3-32: Trends

Note

The trend plots begin when Trends is selected, and continue to build as long as this remains selected.

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Spectra

Click Spectra to display spectral and analysis parameter data and to configure spectral data acquisition settings. You can import spectral data to AMS Machinery Manager for further analysis.

Note

You must have the Advanced Diagnostics application license to view this feature. For more information on the Advanced Diagnostics application, see Advanced Diagnostics

application.

Figure 3-33: Spectra

The Fmax settings define the default frequency range of the thumbnail spectra for Velocity and PeakVue. If you enable the Average Velocity option in AMS Machinery Manager, you can configure the high-resolution Velocity Analytical spectrum to return 400 or 800 lines of resolution, with averaging. If the Average Velocity option is not enabled in AMS Machinery Manager, the spectrum is calculated at 1600 lines of resolution, with no averaging.

When vibration data is acquired, a PeakVue waveform is sampled for 3.2 seconds. If you set the PeakVue True Fmax to 1000 Hz, the first 1.6 seconds of the PeakVue waveform is used for the analytical spectrum. If you set the Fmax to 500 Hz, the entire 3.2 second PeakVue waveform is used to calculate the analytical spectrum. Regardless of what you choose in Fmax, the overall PeakVue trend parameter is calculated over the entire 3.2 second waveform.

Click Velocity Spectrum x and PeakVue Spectrum x to display spectral plots of the latest acquired data for Velocity and PeakVue for connected sensors.

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Figure 3-34: Velocity spectrum

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Figure 3-35: PeakVue spectrum

Click the Energy Bands tab to display calculated energy band values.

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Figure 3-36: Energy Bands tab

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Communications

Click Communications to display network join status information.

Figure 3-37: Communications

Click the Join Mode drop-down to select when the transmitter attempts to join a network.

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Maintenance

Click Maintenance to manage the device maintenance and log settings.

Figure 3-38: Maintenance

Click Routine Maintenance tab → Advertise to New Wireless Devices to enable the gateway to search for new wireless devices on the network. This helps new devices join the network faster.

Click the Event History tab to display transmitter events such as measurements, HART transmissions, and wake actions.

Click the Log Configuration tab to configure event logging options. Data from event logs are useful during a debug process.

Click the Transmission Statistics tab to display statistics related to radio transmission operation such as communication interval between data requests.

Click the Reset/Restore tab to reset the device or to restore factory default settings.

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Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

1 Introduction

1.1 Safety messages

1.2 Overview

1.3 Considerations

1.4 Return of materials

2 Install the AMS 9420

2.1 Sensors

2.1.1 Sensor operating limits

2.1.2 Sensor handling

2.1.3 Sensor mounting/attachment tools and supplies

2.1.4 Prepare the sensor mount

Stud mount (preferred)

Epoxy mount (alternative)

2.1.5 Attach the sensors

2.1.6 Secure the sensor cables

2.1.7 Conduit installation guidelines

2.1.8 Cable entry port installation guidelines

2.1.9 Attach sensor wiring to the AMS 9420 terminals

2.2 Power the AMS 9420 with a power module

2.2.1 Power module installation and replacement

2.2.2 Physical installation

2.3 Power the AMS 9420 with external DC power

2.3.1 Emerson A9000P description of intended use

2.3.2 Optional spacer

2.3.3 Connect external DC power to Emerson wireless transmitters

2.3.4 Connect external DC power and ICP® accelerometer inputs to an AMS 9420

2.4 Install the end cap

2.5 Position the antenna

2.6 Liquid Crystal Display (LCD)

2.6.1 Rotate the LCD

2.6.2 Enable the LCD

2.6.3 Turn on the LCD

2.7 Ground the transmitter

3 Configure the AMS 9420

3.1 Configuration overview

3.1.1 Connect to a wired HART interface

3.1.2 Set the wireless network configuration

3.1.3 Configuration options

3.1.4 Sensor configuration

3.1.5 Measurement parameter units

3.1.6 Alert levels

3.1.7 Publishing mode

3.1.8 Update rate

3.1.9 Minimize power consumption

3.1.10 Trend parameters

3.1.11 Remove the power module

3.2 Configuration with a Field Communicator

3.2.1 Field Communicator menu trees

3.2.2 Field Communicator fast key sequences

3.3 Configuration with AMS Device Manager

3.3.1 Configure wireless network credentials in AMS Device Manager

3.3.2 Right-click menu

Overview

Configure

Service Tools