Artesis MCM User manual

MCM User’s Manual
Artesis A.S. April 2004
For firmware versions 3.2.1 and greater
Document no: MCM 0018-OP-UM-EG-0003

WARNING
Lethal voltages and currents are present at the input terminals of this device. Accordingly, this
MCM unit should be installed and maintained only by qualified, competent personnel who have the
necessary training and experience appropriate to high voltage and current devices. MCM must be
used in accordance with all local and national codes for the installation and operation of electrical
equipment.
Recommended safety precautions should be followed at all times. Both current and voltage
transformers can present lethal currents and voltages when their primaries are energized and
standard practices (i.e. shorting the secondaries of current transformers and removing voltage
transformer fuses) must be respected during installation or any subsequent service.
The unit is designed for operation in a control cabinet with restricted access to the rear terminals
and should not be used in any environment where this is not the case.
MCM should not be used for the purpose of primary protection of electrical equipment.
DISCLAIMER
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, mechanical, photocopying, recording or otherwise,
without prior written permission of Artesis AS. No patent liability is assumed with respect to the
information contained herein.
Whilst every effort has been made to ensure that the information presented in this document is
accurate and up to date, Artesis AS reserves the right to make changes without notice. Neither
Artesis AS nor its designated agents can be held responsible for any errors or omissions, or
problems arising from the application of information contained herein.
Neither Artesis AS nor its affiliates shall be liable to the purchaser of this product or third parties for
damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident,
misuse or abuse of this product or unauthorized modifications, repairs, or alterations to this
product, or failure to comply strictly Artesis AS’s operating and maintenance instructions.
Artesis AS shall not be liable against damages or problems arising the use of any options or any
consumable products other than those designated as Artesis original products or Artesis approved
products by Artesis AS.
Product names other than those owned by Artesis AS are used for identification purposes only and
may be trademarks of their respective owners. Artesis AS disclaims any and all rights in those
marks.
Copyright © Artesis 2004 by Artesis AS, 34950 Tuzla, Istanbul.
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Contents
1. Welcome to MCM
1.1 Introduction 1
1.2 Use of this manual 2
2. A quick guide to using MCM 3
3. MCM Installation
3.1 Preliminary checks 4
3.2 MCM unit Installation 4
3.3 Current and Voltage Sensor Installation 5
3.3.1 Low voltage line driven systems 5
3.3.2 Low voltage inverter driven systems 6
3.3.3 Medium/High voltage systems 7
3.4 Rear panel connections 8
3.5 Applying power to the MCM unit 9
3.6 Installing with soft-starter systems 10
3.7 Installing with inverter drives 10
4.MCMUse
4.1 Introduction 11
4.2 The front panel 11
4.3 Configuring for use 13
4.3.1 Entering the password 13
4.3.2 The Edit Settings menu 13
4.3.2.1 First time use 14
4.3.2.2 Calibration factors 15
4.3.2.3 Motor settings 15
4.3.2.4 Communications settings 15
4.4 Running MCM 16
4.4.1 Introduction 16
4.4.2 Alarm messages and status indication 16
4.4.3 Running CHECK MOTOR 18
4.4.4 Setting and checking the input connections 19
4.4.5 Running LEARN and IMPROVE 20
4.4.6 Running RESUME and UPDATE 23
4.4.7 Advanced use 23
4.4.8 Theory of operation 25
4.4.9 Interpreting MCM fault indications 27
4.4.8.1 MCM status values 27
4.4.8.2 Changes in line voltages 30
4.4.8.3 Load changes 31
4.4.10 Error messages 31
4.4.11 Using the relay output 32
4.4.12 Connecting to the serial port 33
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5 Troubleshooting
5.1 Introduction 37
5.2 Use of the MCM Config utility 37
5.3 Fault diagnosis 40
5.4 Servicing 41
Appendices
1. MCM Error, alarm and warning conditions 42
2. Current and voltage sensor selection 44
3. Connection Diagrams 47
4. Menu settings and parameters 52
5. Edit Settings Menu items 53
6. Flowcharts for MCM use 56
7. Continuous device ratings 62
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MCM User’s Manual
1. Welcome to MCM
1.1 Introduction
MCM is a revolutionary tool in the battle to keep electric motors
and machinery running at peak performance, whilst maintaining
high plant productivity levels. Used correctly, this unique
instrument is capable of monitoring three phase AC motors of all
sizes and power levels to provide clear, unambiguous indications
when the performance of a particular motor (or even the machinery
it is connected to) begins to degrade. The numerous transducers
employed by other, less advanced instruments have been
replaced by three current sensors and three voltage sensors,
familiar to all those involved with the measurement of electrical
quantities, making the system straightforward to install and use
without in-depth training of personnel.
In addition to its unique capabilities as an intelligent condition-
monitoring device, MCM can also perform many of the functions
of, and indeed replace, the more traditional energy monitoring and
data-logging instruments.
For applications involving the monitoring of many motors and
associated machinery, the networking options available with MCM
allow units to be connected together to a host terminal where they
can all be viewed together. Furthermore, the monitoring software
package allows examination of the various parameters MCM uses
to determine the status of a motor and to trend the parameters as
a visual indication of degradation over time.
Despite its simplicity and ease of use, like any intelligent
electronic, software-based device, it is important that MCM is
installed and used correctly. We recommend strongly that you take
the time to study the information contained within the
accompanying manuals and to familiarize yourself with the
operating principles and practices.
Please contact either your supplier or Artesis AS Customer
Service if you experience any problems in the installation or use of
MCM.
Customer service
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1.2 Use of this manual
This manual explains the basic concepts needed to install and use
MCM. The appendix at the end of the manual provides information
that may be useful to the general user. For further, specific details
please contact Artesis AS.
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2. A quick guide to using MCM
Use of MCM is both simple and straightforward and a summary of
the steps needed for first time use is presented in the following
section. The user is referred to Sections 3 and 4 for a detailed
description and to Appendix 6 for flow charts of MCM usage.
a. Connect the motor and power cables and apply power to the
unit. If the message Bad Flash Data appears, press CLEAR.
b. Select Edit Settings, press ENTER and enter the password
using the UP and DOWN buttons. The default password is the
letter ‘m’.
c. Enter the calibration factors for each channel from the Edit
Settings/Calibration menu.
d. Enter the nominal motor values from the menu Edit
Settings/Motor Settings. Values for RMS voltages and
currents, line frequency, motor speed and connection type are
required.
e. Start the motor
f. Return to the IDLE state and run CHECK MOTOR. Any alarms
issued by MCM should be rectified before proceeding further.
g. Press CLEAR to return to the IDLE state and start MCM by
selecting RUN. If the message Lose learn Data? Clear to exit
appears, press ENTER.
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3. MCM Installation
3.1 Preliminary checks
Please inspect the contents of the MCM package and ensure that
they agree with the information in the Packing list. In the event of
any missing or damaged items, please contact your supplier
immediately. Check also that the power range of the MCM unit is
suitable for the motor to be monitored. The device type can be
found on the MCM label. Artesis A.S. will not accept responsibility
for damage caused to or by any MCM unit that has been
incorrectly installed or installed on a motor system outside the
indicated power range.
3.2 MCM unit Installation
MCM has been designed to mount directly onto the front panel of
the motor switchgear cabinet. Any other usage is not
recommended due to the lethal voltages present at the
terminals. To mount, insert the MCM unit into the prepared
91x91 mm cutout on the cabinet panel and push until the front of
the unit is flush with the panel. Insert the side retainers and
tighten the thumbscrews on each retainer until the MCM unit is
held securely in place.
In common with any device connected to high power
electrical supplies, only suitably qualified personnel should
install and maintain MCM.
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1
2
3
Mounting MCM on a panel
3.3 Current and Voltage Sensor Installation
Dangerous and lethal voltages can develop across the
secondary terminals of open circuit current and voltage
transformers. Before disconnecting any MCM unit to or from a
current transformer, the secondary terminals of the
transformer should be shorted using a link capable of
carrying at several times the nominal output current (i.e. at
least 10A). Before performing any work on a voltage
transformer, its fuse must be removed or switch opened.
Contact breakers or fuses at their sources must protect all
voltage inputs.
3.3.1 Low voltage line driven systems
Three standard 5A secondary, current transformers of appropriate
ratings are recommended for current sensing (please refer to the
appendix at the end of this manual for full specifications). The
secondary terminals of each transformer should be connected to
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the corresponding current measurement terminal pairs, I11-I12,I21-
I22, I31-I32, on the rear of the MCM unit.
Voltage line connections VR, VS, VTshould be made directly to
their respective voltage measurement terminals V1,V2,V3at the
rear of the unit.
Please refer to the connection diagrams in the appendix at the
end of this manual for further details.
3.3.2 Low voltage inverter driven systems
The current sensors employed by MCM for inverter driven
systems are Hall-effect type requiring an external DC power
supply. The motor current rating should be checked carefully to
ensure compatibility with the sensors provided. Please refer to the
appendix at the end of this manual for further details on sensor
selection.
High current sensors (for currents greater than 200 A) need to be
mounted separately at a convenient location within the switchgear
cabinet together with their external power supplies. Smaller
sensors are mounted on the same circuit board as the power
supply and should be placed together at the chosen location. In
both cases, the cable carrying power to a single phase of the
motor must be passed through the central hole in the appropriate
current sensor and secured.
The power supply ground should be connected directly to the I12,
I22,I32 pairs of current measurement terminals on the rear of the
MCM unit.
Voltage connections VR, VS, VTshould be made directly to their
respective voltage measurement terminals V1V2V3 at the rear of
the unit.
Note that MCM is not recommended for use with inverters
operating at a chopping frequency lower than 5kHz.
Please refer to the connection diagrams in the appendix at the
end of this manual for further details.
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