AGI CMC MRS Series User manual

Read this manual before using product. Failure to
follow instructions and safety precautions can
result in serious injury, death, or property
damage. Keep manual for future reference.
Part Number: 10678 Rev. G
Revised: November 2023
Original Instructions
MRS Series
MRS001-EK Rotation Sensor
Technical Manual

New in this Manual
The following revisions have been made to this manual:
Rev Description Date
First Release First release January 21 2005
Rev. A Miscellaneous text changes and updated dimensions drawing. May 11 2005
Rev. B Updated mechanical installation details to include grommet
mounting system.
May 20 2005
Rev. C Updated illustration showing new code wheel. May 20 2005
Rev. D Added the MRS001-EK to the manual. April 17 2008
Rev. E Updated exploded view drawing 11031. December 17 2010
Rev. F Updated parts list drawing 11031. January 24 2012
Rev. G • Changed company logo and refresh changing name to reflect
complete assembly.
• Rewrite for enclosure assembled at factory instead of fabricated
bracket installation.
• Updated specifications to reflect higher current draw and
housing dimensions.
• Revised drawing 11031 changing name to Assembly/Installation.
• Updated to new AGI manual format.
March 4 2023
Manual updated to standard AGI format. September 2023

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CONTENTS
1. Introduction ............................................................................................................................................ 4
2. Safety....................................................................................................................................................... 5
2.1 Safety Alert Symbol and Signal Words...................................................................................... 5
2.2 General Safety Information....................................................................................................... 5
2.3 HAZMON Safety......................................................................................................................... 5
2.4 Drives and Lockout/Tagout Safety ............................................................................................ 6
2.5 Safety Equipment and Procedures............................................................................................ 6
2.6 Personal Protective Equipment................................................................................................. 7
3. Indicators ................................................................................................................................................ 8
4. Installation .............................................................................................................................................. 9
4.1 Mounting the MRS001–EK ........................................................................................................ 9
4.2 Mounting Using a Fabricated Bracket — Deprecated ............................................................ 11
5. Communications ................................................................................................................................... 13
6. Assembly ............................................................................................................................................... 14
6.1 Assembly Drawings ................................................................................................................. 16
7. Specifications ........................................................................................................................................ 19
8. Form of Limited Warranty.................................................................................................................... 20

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1. Introduction
The MRS001-EK Rotation Sensor is designed to determine the shaft speed of rotating equipment.
Measurements from 1 to 1000 RPM are possible. Internally, the device uses a magnetic code wheel
that attaches to the shaft with threaded coupling. FOLLOW ALL SAFETY PROTOCOLS. Before working
on equipment, use Lockout/Tagout procedure to shutdown Hazardous Energy sources including but
not limited to powered circuits, moving
Always operate machines with guards in place to avoid the risk of injury or loss of life.
Always operate the plant with hazardous monitoring systems fully operational to avoid
risks of injury or loss of life. Follow all safety protocols. Follow all safety instructions
throughout this manual.The sensors are intended for installation as part of a complete
HAZMON system where components are specified by CMC for operation in hazardous
locations. This includes:
• MIP001 Inductive Proximity Sensors
• MBC081/3 IS Bus Converters acting as Intrinsic Safety Barrier
• MTB0X6 Field Interconnect Boxes (FIB)
• Operator/PLC Interface
Cable materials are pre-specified to meet the Control Drawing requirements.
The rugged shaft mounted housing facilitates mounting to a machine’s output shaft using 1/2”-13NC
male thread. The housing is free hanging and does not require any brackets. Alternately a high force
magnet assembly is available to attach the code wheel to the machine’s output shaft. This version
comes with a protective shroud that guards the threaded attachment point. Otherwise, suitable
guarding is always to be used to protect personnel from contact with rotating equipment.
Each sensor has a unique digital serial number automatically recognized by the associated system
components. Communication utilizes a Single-Wire bus protocol that also provides power to the
sensor. It is considered Intrinsically Safe when used with MBC081/3 IS Bus Converter.
The enclosure is industrial grade UHMW-PE plastic housing utilizing a fully potted sensor module
which is field replaceable. Each sensor comes complete with 6’6” (2 m) of flexible UV resistant UL 2517
TPE cable. The cable is meant to be protected with LFNC for heavy industrial environments. This cable
is terminated with an RJ-11 connector for modular connection to Field Interconnect Box (FIB)
backplane.
Figure 1. Direct Coupled Threaded Shaft Attachment
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2. Safety
2.1. Safety Alert Symbol and Signal Words
This safety alert symbol indicates important safety messages in this manual. When you see
this symbol, be alert to the possibility of injury or death, carefully read the message that
follows, and inform others.
Signal Words: Note the use of the signal words DANGER,WARNING,CAUTION, and NOTICE with the safety
messages. The appropriate signal word for each message has been selected using the definitions below as a
guideline.
Indicates an imminently hazardous situation that, if not avoided, will result in serious injury or
death.
Indicates a hazardous situation that, if not avoided, could result in serious injury or death.
Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury.
Indicates a potentially hazardous situation that, if not avoided, may result in property damage.
2.2. General Safety Information
Read and understand all safety instructions, safety decals, and manuals and follow them when operating or
maintaining the equipment.
• Owners must give instructions and review the information initially and annually with
all personnel before allowing them in the work area. Untrained users/operators
expose themselves and bystanders to possible serious injury or death.
• Use for intended purposes only.
• Modification of the rotation sensor in any way without written permission from the manufacturer is not
covered by the warranty.
• Follow a health and safety program for your worksite. Contact your local occupational health and safety
organization for information.
• Follow applicable local codes and regulations.
2.3. HAZMON Safety
Do not operate plant or equipment with compromised system. Follow safety procedures while
starting and stopping the Hazard Monitoring system including notification, permits, etc.
• To prevent exposure to potential ignition source, DO NOT OPEN IS Bus Converter cover in dust explosive
atmosphere while energized. Field Interconnect Boxes may be opened for troubleshooting purposes with
power applied – see next warning:
• Remove dust and condensation away from enclosure seals before opening to prevent contamination.
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• Always operate system without bypassing alarm controls. Otherwise, follow safety protocols to verify there
are no actual hazards including but not limited to heat sources, blockages, lack of guarding, etc.
• Validate sensor positions before first operating, after regular system maintenance, immediately after
installing replacement parts, and before operating machines. Always test interlocks during commissioning
and on a periodic basis recording their functionality.
• Inspect sensors, associated wiring and enclosures for damage and proper installation on regular interval.
• Follow all other manufactures’ instructions, safety labels and placards.
2.4. Drives and Lockout/Tagout Safety
Inspect the power source(s) before using and know how to shut down in an emergency.
Whenever servicing or adjusting the equipment, make sure to shut down the power
source and follow lockout and tagout procedures to prevent inadvertent start-up and
hazardous energy release. Know the procedure(s) that applies to the equipment from the
following power sources.
For example:
WARNING
• De-energize, block, and dissipate all sources of hazardous energy.
• Lock out and tag out all forms of hazardous energy.
• Ensure that only 1 key exists for each assigned lock, and that you are the only one that holds that key.
• After verifying all energy sources are de-energized, service or maintenance may be performed.
• Ensure that all personnel are clear before turning on power to equipment.
For more information on occupational safety practices, contact your local health and safety organization.
2.5. Safety Equipment and Procedures
Fire Extinguisher
Provide a fire extinguisher for use in case of an accident. Store in a highly visible and accessible
place.
First-Aid Kit
Have a properly-stocked first-aid kit available for use should the need arise, and know how to use it.
•Emergency Egress
Locate the shortest path to the nearest exit(s) and know how to sound alarm in case of accident. Be
aware of closest muster station and alternate in case of evacuation.
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•Confined Space
Use personal carbon monoxide detector when entering Boot Pit and follow safety protocols for
determining whether safe to enter enclosed spaces using necessary equipment.
2.6. Personal Protective Equipment
The following Personal Protective Equipment (PPE) should be worn when assembling, operating or maintaining
the equipment.
•Safety Glasses
Wear safety glasses at all times to
protect eyes from debris.
•Steel-Toe Boots
Wear steel-toe boots to protect feet from
falling debris.
•Coveralls
Wear coveralls to protect skin.
•Work Gloves
Wear work gloves to protect your hands
from sharp and rough edges.
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3. Indicators
The following indicator description is used for troubleshooting sensors outside of the enclosure, and is
not meant to be for field diagnostics. Use the EZTest handheld Diagnostic Troubleshooter to test
communication and read RPM (Revolutions Per Minute).
Figure 2. Indicator Illustration
The sensor requires no settings. There are two indicator lamps:
Description Color Flash Rate Operation
Status Green 1
2
3
4
5
6
OK, no communications
OK, communications active
Power on self test fault
Calibration parameter fault
Firmware fault
Serial number fault
Rotation Red -Flashes whenever a code wheel
magnet crossing is detected.
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4. Installation
The rotation sensor comes assembled in MRS001-EK enclosure kits. The housing is free-standing as it is
mounted to the drive shaft of the machine at single attachment point. No brackets are required.
The optional magnet used to attach the Rotation Sensor to the machine shaft has an
extremely strong attractive force and will move suddenly and rapidly towards any
ferrous or magnetic material which may cause injury.
4.1. Mounting the MRS001–EK
Before installation:
1. When directly coupled, drill and tap the shaft of the rotating device with a 1/2”-13NC threaded hole to a
depth of at least 1.5” (38 mm).
Note
It is important to ensure this hole is centered and parallel to the shaft – excessive deviation will
cause bearing wear damaging the device.
2. Unpack the respective MRS001 and check the supplied parts are complete:
a. 11486 Assembled c/w 1/2”-13 Nut
b. 11486PS Assembled c/w 1/2”-13 Nut, Magnet and Protective Shroud
3. Install the coupling onto the machine’s drive shaft. For threaded attachment, screw the shaft as far as
possible into the shaft. Secure the shaft with a 7/16” open end wrench and tighten the jam nut to secure
the shaft. For the magnetic coupling, center it on the end of the shaft sliding it as necessary into place.
4. Install LFNC (Liquid-tight Flexible Non-metallic Conduit) using 1/2” (16mm) fittings as supplied in the
HAZMON In-A-Box kit.
5. With guards in place, start the machine and observe the shaft and housing.
Note
There should be a minimum of wobble due to being un-centered (eccentricity) keeping the housing
stationary and no noticeable vibration.
6. Verify the sensor’s output speed with a tachometer if otherwise unknown.
7. Determine the direction of rotation of the shaft. For standard configuration as supplied by the factory, set
the span value in the system to 1 (positive one) for counterclockwise, and to -1 (minus one) for clockwise.
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Figure 3. Typical Mounting
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