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Artesis MCM User Manual

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MCM User's Manual
© 2009 Artesis A.S.
1
Document ID: MCM-OP-UM-EG-0091.0000

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  • Page 1 MCM User's Manual © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 2 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...
  • Page 3 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.

  • Page 4: Table Of Contents

    Running LEARN and IMPROVE ................................14 Running RESUME and UPDATE ................................16 Advanced use ................................17 Equipm ent Faults and Their Diagnoses Using MCM ................................19 Interpreting MCM fault indications ................................21 MCM status values ................................. 21 Changes in line voltages .................................
  • Page 5 3 Fault diagnosis ........................... 29 4 Servicing ........................... 30 Section V Appendices 1 Appendix 1: MCM Error, alarm and warning conditions ........................... 31 2 Appendix 2: Current and voltage sensor selection ........................... 34 3 Appendix 3: Connection Diagrams ........................... 36 4 Appendix 4: Menu settings and parameters ...........................

  • Page 6: Section I Welcome To Mcm

    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.
  • Page 7 Section 1 - Welcome to MCM MCM User's Manual contact Artesis AS. © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...

  • Page 8: Section Ii Mcm Installation

    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.

  • Page 9: Current And Voltage Sensor Installation

    2.3.2 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.

  • Page 10: Medium/High Voltage Systems

    Please refer to the connection diagrams in the appendix at the end of this manual for further details. Rear panel connections Connections to the MCM rear panel are given in the following figure. Lethal voltages can be present at the voltage and current terminals and it is vitally important that power is removed from both the motor and the MCM unit prior to any connections being changed.

  • Page 11: Applying Power To The Mcm Unit

    "Initializing.." After a few seconds, the display should indicate that it is in the IDLE mode. MCM is now ready for use. When using a device for the first time the message "Bad flash data! Press Clear" may be displayed. In this case press the CLEAR button several times until the message disappears.

  • Page 12: Installing With Soft-Starter Systems

    MCM from modeling the properties of the motor itself. If MCM is to be used with such a system, it is essential that the maximum current limit of the starter be above the nominal running motor current so that it is bypassed effectively during all normal operation.

  • Page 13: Section Iii Mcm Use

    Use of MCM is both simple and straightforward once the basic concepts and principles are understood. This section of the manual is designed to introduce these concepts and to demonstrate how MCM is set up, how to check all the connections and settings, how MCM learns the characteristics of the system it will monitor and finally how to actually monitor the motor system.

  • Page 14: Configuring For Use

    Configuring for use Master reset: When first installed, the MCM unit will be configured for the default, factory settings which will need to be changed prior to use. At later times, the factory settings can be restored by pressing and holding down the LEFT button for about 4 seconds during power up of the device, until the string;...

  • Page 15: The Edit Settings Menu

    3.3.2.1 First time use Before MCM can be used for the first time it is necessary to change various settings from their default values (a table outlining the MCM settings is shown in the appendix). Values relevant to the connected motor must be set for the quantities described in the following sections.

  • Page 16: Calibration Factors

    Setting the device address: If the MCM networking options are to be used, the MCM network address must be supplied. By default this is set to 0, which by convention is the address of the host terminal. Use of this address will therefore disrupt communications over the network and must be changed prior to connection.

  • Page 17: Running Mcm

    Viewing alarm messages: An alarm is indicated on the front panel of MCM by the message Alarm followed by a hexadecimal value. The bits of the hexadecimal value refer to which alarm is raised. Repeatedly pressing the RIGHT or LEFT buttons cycles through a list of all active alarms.

  • Page 18: Running Check Motor

    3.4.3 Running CHECK MOTOR On first use of MCM and each time any maintenance is performed on the motor, it is essential that the motor together with its connections are checked by running the CHECK MOTOR function. In this mode MCM performs a short check on all motor connections to determine the phase ordering and that a motor is connected and running.

  • Page 19: Setting And Checking The Input Connections

    Otherwise the motor is assumed not to be loaded. It is thus important to enter an accurate value for the nominal current. Even so, it is still possible for MCM to choose the wrong solution which will yield unrealistic values for the phase angle when the loading on the motor changes in use. MCM...
  • Page 20 Once the IMPROVE stage is complete, the MONITOR phase will automatically continue without user intervention. This is the main operating mode and MCM is expected to spend most of its time in this mode monitoring attached motor systems. In order to start monitoring, MCM must first have learnt the characteristics of the motor it is to monitor and have a valid learning mode.

  • Page 21: Running Resume And Update

    RESUME from the main menu, which will cause MCM to continue in its incomplete mode at the point of interruption. Thus if it is necessary to stop MCM for any reason, it can be restarted without affecting any existing data.

  • Page 22: Advanced Use

    3.4.7 Advanced use It is possible to customize the behavior of MCM by adjusting various settings. As usual a valid password must be supplied before the Edit Settings menu can be entered. The following table summarizes the settings that can be changed together with their significance. It is recommended that the original values of each setting be recorded prior to changing them.
  • Page 23 A value between 1000 - 2000 is recommended Flash update rate MCM does not update the flash with new values at each iteration, as this could shorten the flash lifetime. On the other hand, the longer data are stored in volatile memory, the greater the potential for data loss if power fails.

  • Page 24: Equipment Faults And Their Diagnoses Using Mcm

    MCM User's Manual Monitoring motor and line parameters: In all operating modes (and after CHECK MOTOR has finished), it is possible for MCM to display selected parameters. Sequentially pressing the UP or DOWN buttons allows the user to select to...
  • Page 25 Section 3 - MCM Use MCM User's Manual MCM uses the electric motor of the equipment as a sensor. Therefore, any fault of the equipment that affects the motor or the three phase system is also observed by MCM. MCM first learns the motor-based system for a period of time by acquiring and processing the motor data.

  • Page 26: Interpreting Mcm Fault Indications

    MCM employs two different measures for calculating the motor status: Motor Status 1 and Motor Status 2. In addition to these, MCM also monitors load and line changes and summarizes the results of this monitoring via the Load line status parameter. Motor Status 1 monitors the maxima of each of the three...

  • Page 27: Changes In Line Voltages

    Viewing error messages and numbers: MCM indicates an error to the user by the string Error on the first line of the display followed by the error string on the lower line. Pressing the RIGHT or LEFT buttons will display the error number.

  • Page 28: Using The Relay Output

    At this point ENTER should be pressed to perform the reset. If this does not clear the error, it is likely that the MCM device is experiencing a hardware fault and that the unit should be returned for servicing.

  • Page 29: Connecting To The Serial Port

    Connecting to the serial port MCM can be connected to a PLC or other monitoring system such as MCMSCADA via the RS485 port on the rear of the device. Artesis A.S. makes available its proprietary protocol on request in document MCM-OP-SI-EG-0002 entitled MCM System Communications Protocol Document for End Users.
  • Page 30 MCM uses 2 or 4-wire RS 422/RS485 communications with optically isolated (to 2500V) inputs and outputs. MCM is configured as a slave device and needs to be addressed before it will communicate over the bus. It will support communication rates of up to 19,200 Baud over distances exceeding 1000m, but this rate can be degraded if the environment is especially noisy.

  • Page 31: Section Iv Troubleshooting

    The MCM Config software is a simple test utility provided by Artesis for examination of waveforms, and can connect to a single MCM unit using the RS485 serial line on the rear of the instrument. If a network is available, MCM Config can be installed on the host computer, otherwise a portable laptop machine equipped with a suitable RS232 –...
  • Page 32 Status and Motor Status boxes. You can send commands to the MCM by clicking on the Select Command box, which brings up a list of available commands. Choose commands from the list below to test various functions of the MCM.
  • Page 33 Connection Status box in the amount of time specified earlier as the timeout interval, check the connections, cabling, baud rate, pc ports etc. Waveforms of the last data acquired by MCM during data acquisition can be uploaded to the pc for inspection as follows: Send the MCM unit to IDLE mode by selecting the Idle command from the Command Selection combo.

  • Page 34: Fault Diagnosis

    –30 and +60º. In either case, check that the motor topology has correctly been entered on the MCM front panel and that the currents do indeed correspond to the correct voltages. It is important to perform this test with the motor under loaded conditions as loading can significantly affect the measured phase angle.

  • Page 35: Servicing

    Current Instability threshold should be incremented from its default value of 15% in steps of 5% up to a maximum value of 50% using the MCM front panel. If the variation exceeds this level, please contact Artesis.

  • Page 36: Section V Appendices

    Section 4 - Troubleshooting MCM User's Manual Appendices Appendix 1: MCM Error, alarm and warning conditions Error conditions: First byte Minor code Format Second byte Error type Error types Error no. Error type Description 0x010000 Memory The dynamic memory manager failed in a request to allocate a block of...
  • Page 37 Section 5 - Appendices MCM User's Manual Alarm conditions Alarm no. Alarm type Description 0x0001 Voltage balance Voltage phase imbalance exceeds the set threshold 0x0002 Current balance Current phase imbalance exceeds the set threshold 0x0004 Voltage range Ch 1 Voltage greater than the upper threshold...
  • Page 38 No data obtained, no zero crossings detected, perfect phase balance (voltage or current) 0x20000 Phase ordering The phase ordering used by MCM is incorrect and must be rectified. 0x40000 Phase fault Voltage phase angles incompatible with 120º were detected 0x80000...

  • Page 39: Appendix 2: Current And Voltage Sensor Selection

    Sensors used for measuring currents should be selected depending on the power of the motor to be monitored by the MCM device. The three current sensors are connected in series with the motor power cables. Power to the current sensors is provided by separate power sources fitted inside the motor control panel.
  • Page 40 Section 5 - Appendices MCM User's Manual Current Transformers Upper Voltage (kV) Class Secondary output Standards range (A) ANSI 0.72 60044-1 57.13 1851987 CS71978 17.5 Voltage Transformers Upper voltage (kV) Class Secondary output (V) Standards 0-100 1861987 © 2009 Artesis A.S.

  • Page 41: Appendix 3: Connection Diagrams

    MCM User's Manual Appendix 3: Connection Diagrams Connection diagram for low current (up to 5A) line driven motors (MCM LV Line): Connection diagram for low voltage line driven motors with current transformers (with nominal current above 5A & MCM LV Line):...
  • Page 42 & MCM LV Inverter): Connection diagram for high current, low voltage, inverter driven motors with current range of 201-2000A (LEM Sensor & MCM LV Inverter): Connection diagram for medium/high voltage motors with voltage & current transformers (MCM MV Line): © 2009 Artesis A.S.
  • Page 43 Section 5 - Appendices MCM User's Manual Connection diagram for medium/high voltage, Aron connected motors (MCM MV Line): © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...

  • Page 44: Appendix 4: Menu Settings And Parameters

    Section 5 - Appendices MCM User's Manual Appendix 4: Menu settings and parameters Hierarchical view of the menu structure © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...

  • Page 45: Appendix 5: Edit Settings Menu Items

    Section 5 - Appendices MCM User's Manual Appendix 5: Edit Settings Menu items Edit Sub menu Description Type Range Defa Settings items Menu valu group Motor values Admittance Ratio of RMS current to voltage Display only Phase Angle between V1 and I1 channels in degrees...
  • Page 46 7/8/9 Display Stop bits Number of bits indicating end of transmitted Edit/ frame Display Response Delay (in ms) before MCM will respond to an Edit/ 0 – 9 delay input command. Display Motor Nominal Nominal motor phase – neutral working voltage Edit/ 0.1 –...
  • Page 47 Section 5 - Appendices MCM User's Manual Edit Sub menu Description Type Range Defa Settings items Menu valu group Display Calibration V channel 1 Calibration factors for each input channel sensor Edit/ 0.1- Display 999999 V channel 2 Edit/ 0.1-...
  • Page 48 Phase Override the phase ordering determined Edit/ ON/OFF ordering override automatically MCM during CHECK MOTOR. If set, Display the order can be changed manually from the following item Phase order The current phase ordering. Voltages are RST, Edit/ currents rst. Preceding + or – indicates inversion Display (i80º...
  • Page 49 Section 5 - Appendices MCM User's Manual Edit Sub menu Description Type Range Defa Settings items Menu valu group password © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...

  • Page 50: Appendix 6: Flowcharts For Mcm Use

    Section 5 - Appendices MCM User's Manual Appendix 6: Flowcharts for MCM use Running MCM: Edit Settings and Check Motor © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 51 Section 5 - Appendices MCM User's Manual Running MCM: New Learn © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 52 Section 5 - Appendices MCM User's Manual Running MCM: MONITOR / IMPROVE / UPDATE © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 53 Section 5 - Appendices MCM User's Manual Running MCM: Alarm conditions © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 54 Section 5 - Appendices MCM User's Manual © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...
  • Page 55 Section 5 - Appendices MCM User's Manual © 2009 Artesis A.S. Document ID: MCM-OP-UM-EG-0091.0000...

  • Page 56: Appendix 7: Continuous Device Ratings

    Section 5 - Appendices MCM User's Manual Appendix 7: Continuous device ratings Quantity Nominal Min. Maximum Maximum Units measurable permissible Measurement 20 (for 5 s) currents (rms) 300 (for 5 s) – I 600 (for 5 s) – I 700 (for 5 s) –...

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