SKF CMSS500 Series User Manual
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SKF CMSS500 Series User Manual

SKF CMSS500 Series User Manual

Machine condition transmitter (mct)
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SKF Machine Condition
©
Copyright
2007
by SKF Reliability Systems
All rights reserved.
5271 Viewridge Court
San Diego, CA 92123-1841 USA
Telephone: (858) 496-3400
Fax: (858) 496-3531
Customer Service: 1-800-523-7514
Transmitter (MCT)
CMSS500(A) Series
User Manual Part No. 32031400-EN
Revision C
User Manual
주식회사 광 호
T. 061-684-2136
F. 061-684-2137
E. kh-br@hanmail.net

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  • Page 1 CMSS500(A) Series User Manual Part No. 32031400-EN Revision C User Manual © Copyright 2007 by SKF Reliability Systems All rights reserved. 5271 Viewridge Court San Diego, CA 92123-1841 USA Telephone: (858) 496-3400 Fax: (858) 496-3531 Customer Service: 1-800-523-7514 주식회사 광 호...
  • Page 2 (Europe, Middle East, and Africa) Visit us at our web site: www.skf.com/cm SKF Patents include: #US05854553, #US05845230, #US06489884, #US05679900, #US04768380, #US06199422, #US05992237, #US06202491, #US06513386, #US06275781, #US06633822, #US06006164, #US2003_0178515A1, #US6,789,025, #US6,789,360, #WO_03_048714A1 ® SKF is a registered trademark of the SKF Group 010207jj...
  • Page 3 Product sold by SKF, even if such claim is based on tort (including negligence or strict liability), breach of contract, or any other legal theory.
  • Page 4 (30) months from the date the On-Line System is shipped by SKF to Buyer, two (2) years from the date the On-Line System is installed and commissioned by SKF, or two (2) years from the date...
  • Page 5 90-day warranty stated above. THIRD PARTY PRODUCT WARRANTIES For any third party products sold to Buyer by SKF, SKF will transfer to Buyer any warranties made by the applicable third party product vendor to the extent such warranties are transferable.
  • Page 6 Products to Buyer. Buyer agrees to pay SKF's invoice for the then-current price of any replacement Product furnished to Buyer by SKF, if the Product that was replaced is later determined by SKF to conform to this limited warranty.
  • Page 7 The exclusive remedies provided in this limited warranty shall not be deemed to have failed of their essential purpose so long as SKF is willing and able to perform to the extent and in the manner prescribed in this limited warranty.

  • Page 9: Table Of Contents

    Contents Introduction The MCT Transmitter ............. 1 The MCT Monitor............. 3 Identification Label............6 Powering the MCT............8 CMSS500 Series Transmitters Overview ................1 Jumpers ................7 Output................15 CMSS500 Series Monitor Setting Monitor Alarms ..........1 Alert and Danger Alarm Setpoint Adjustment..1 Alert and Danger Alarm Delays Adjustment .....
  • Page 10 CE Installation Drawings ..........2 CE Installation ..............4 Mounting and Outline CMSS500A ................ 1 CMSS500................2 General Severity Level Guidelines Vibration measured in Velocity........1 Vibration Enveloped Acceleration Measurements..4 TOC - 2 SKF Machine Condition Transmitter User Manual...

  • Page 11: Introduction

    Introduction SKF Reliability Systems' Machine Condition Transmitter (MCT) modules are compact rail-mounted devices that convert part of a wide-band input signal to a signal proportional to machine vibration. The MCT Transmitter There are six MCT versions, the CMSS525 is an RMS...
  • Page 12 Introduction The MCT Transmitter Figure 1 - 1. The MCT - Transmitter. Figure 1 - 2. The MCT - Transmitter/Monitor. 1- 2 SKF Machine Condition Transmitter User Manual...

  • Page 13: The Mct Monitor

    (A or D) with a standard digital voltmeter. The alarm module also provides a transducer OK relay contact, and a trip multiply function (Tx). Trip multiply allows the alarm levels to be temporarily SKF Machine Condition Transmitter 1- 3 User Manual...
  • Page 14 The MCT Monitor increased by a factor of two or three to avoid false alarms, for example, during the start-up phase of a machine. Figure 1 - 3. MCT Transmitter General Pin Assignment. 1- 4 SKF Machine Condition Transmitter User Manual...
  • Page 15 Introduction The MCT Monitor Figure 1 - 4. MCT Transmitter / Monitor General Pin Assignment. Figure 1 - 5. MCT Transmitter / Monitor Top and Bottom Pluggable Terminals. SKF Machine Condition Transmitter 1- 5 User Manual...

  • Page 16: Identification Label

    Standard MCT Units 1- 6 SKF Machine Condition Transmitter User Manual...
  • Page 17 Introduction Identification Label SKF Machine Condition Transmitter 1- 7 User Manual...

  • Page 18: Powering The Mct

    +24 Vdc and be capable of supplying minimum currents noted in Table 1-2: Model Minimum Power Number Supply/Unit CMSS525- 55 mA CMSS530- CMSS540- 1- 8 SKF Machine Condition Transmitter User Manual...
  • Page 19 From these terminal blocks, 24 Vdc power is distributed to each individual module. It is recommended to use individual fuse terminals for each positive supply line so a power SKF Machine Condition Transmitter 1- 9 User Manual...
  • Page 20 (PE). For CE-approved systems, it is recommended to use shielded twisted pair cables for all signal connections. Except for the sensor signal (for example, accelerometer), all shields must be connected to PE. 1- 10 SKF Machine Condition Transmitter User Manual...

  • Page 21: Cmss500 Series Transmitters

    CMSS500 Series Transmitters Overview CMSS525 Acceleration Transmitter The CMSS525 is a 4-20 mA RMS Acceleration Transmitter. It is factory configured for compatibility with a low-impedance, voltage output accelerometer. The input signal is processed to determine the overall vibration amplitude in terms of RMS acceleration (g's).

  • Page 22: Overview

    CMSS500 Series Transmitters Overview CMSS530 Velocity Transmitter The CMSS530 is a 4-20 mA Velocity Transmitter. It is factory configured for use with a low-impedance accelerometer, and can also be configured for use with a low-impedance velocity sensor, or electro-mechanical velocity sensor. The sensor input signal is processed to determine its overall vibration level in terms of either velocity (RMS or Peak).
  • Page 23 CMSS500 Series Transmitters Overview For example: 100A indicates the transducer is a 100 mV/g low-impedance accelerometer. Other sensitivities are available by special order. Full Scale: Range: English Metric Jumper .5 IPS 12.5 mm/sec 1.0 IPS 25 mm/sec 1.5 IPS 37.5 mm/sec E2 and E3 2.0 IPS...
  • Page 24 CMSS500 Series Transmitters Overview For example,200 indicates the transducer has an output sensitivity of 200 mV/mil. Other sensitivities are available by special order. Full Scale: Range: English Metric Jumper 5 mils 127 microns 10 mils 254 microns 15 mils 381 microns...
  • Page 25 CMSS500 Series Transmitters Overview side label. This number is the transducer sensitivity in mV/mil. For example,200 indicates the transducer has an output sensitivity of 200 mV/mil. Other sensitivities are available by special order. Full scale option for the position transmitter unit is factory preset to 0 to 80 mils (40-0-40) / 0 to 2.0 mm...
  • Page 26 CMSS500 Series Transmitters Overview Range: Full Scale: Jumper 10 gE 30 gE 80 gE Table 2 - 5. MCT Enveloped Acceleration. Full scale option for all enveloped acceleration transmitter units is factory preset to 10 gE. The Filter option is set to Filter 3 (500 Hz to 10 Hz), unless otherwise specified in the model number.

  • Page 27: Jumpers

    CMSS500 Series Transmitters Jumpers open at the transmitter end, and connected to common xdcr- terminal at the transmitter/monitor input only. Transducer OK Circuit The vibration transmitter units incorporate a transducer OK circuit. This feature continuously monitors the transducer bias and signal voltage. If this voltage exceeds...
  • Page 28 CMSS500 Series Transmitters Jumpers Jumper Locations Setting Jumper Configuration Range Settings 0 to 0.5 IPS or 12.5 mm/sec Option: 01 0 to 1.0 IPS or 25.0 mm/sec / *factory preset Option: 02 E2 and E3 0 to 1.5 IPS or 37.5 mm/sec...
  • Page 29 CMSS500 Series Transmitters Jumpers MCT VEL Peak PC Board Full circle indicates factory preset J1 8-Pin Connector (Ribbon Cable) Range Jumpers E4 E3* E2 Figure 2 - 4. MCT Velocity Peak Detection and Displacement Jumper Locations. Range Jumpers Range (g, RMS)
  • Page 30 CMSS500 Series Transmitters Jumpers Range (IPS, Peak) Install Jumpers E2, E3 E3, E4 E2, E3, E4 Table 2 - 8. Velocity MCT Peak Range Jumpers. MCT VEL RMS PC Board Full circle indicates factory preset 8-Pin Connector (Ribbon-Cable) Range Jumpers Figure 2 - 27.
  • Page 31 CMSS500 Series Transmitters Jumpers Range Install English (IPS, Metric Jumpers RMS) (mm/sec) 12.5 25.0 E2, E3 37.5 E3, E4 50.0 E2, E3, E4 62.5 Table 2 - 9. Velocity MCT RMS Range Jumpers. Range Install English (mils) Metric Jumpers (microns)
  • Page 32 CMSS500 Series Transmitters Jumpers Setting Jumper Configuration Constant Current Source Provides constant current / *factory preset No current supply, uses buffered output as signal input E2, E5 Selectable Filterbands ENV Filter #4 (5 kHz to 40 kHz) E3*, E6* ENV Filter #3 (500 Hz...
  • Page 33 CMSS500 Series Transmitters Jumpers Figure 2 - 28. Enveloped Acceleration MCT Jumper Locations. SKF Machine Condition Transmitter 2- 13 User Manual...
  • Page 34 CMSS500 Series Transmitters Jumpers Range Jumpers Range (gE) Install Jumpers Table 2 - 12. Enveloped Acceleration MCT Options. CMSS590 Enveloped Acceleration Filter Selection The enveloped acceleration transmitter is delivered with three standard band-pass filters. Table 2-13 shows the available filters for each unit.

  • Page 35: Output

    CMSS500 Series Transmitters Output The factory preset for the enveloped acceleration transmitter module is Filter 3 (500 to 10,000Hz). Use the following guideline to define the proper band- pass for the application. The low frequency roll-off of the band-pass filter to eliminate rotational components is: Fmin >...
  • Page 36 CMSS500 Series Transmitters Output Measured Current = 12 mA; Full Scale = 1 IPS × Converted Output Reading The relationship of the measured vibration parameter to the output voltage, when using a 250 Ohm resistor, is displayed in the following equation: FullScaleV ×...
  • Page 37 This output can be connected to portable monitoring ® equipment or analyzers (i.e., SKF Microlog Series Data Collector / Analyzer), or can be used to check the bias output voltage (BOV) of low-impedance transducers using a digital voltmeter.
  • Page 38 CMSS500 Series Transmitters Output 2- 18 SKF Machine Condition Transmitter User Manual...

  • Page 39: Cmss500 Series Monitor

    CMSS500 Series Monitor This section applies only to the Monitor units. Setting Monitor Alarms For a brief overview of vibration severity levels, reference the General Severity Level Guidelines appendix. Figure 3 - 1. MCT Front View With Monitor Options Explained.
  • Page 40 CMSS500 Series Monitor Alert and Danger Alarm Setpoint Adjustment the correct dc voltage is measured at BNC connector located directly above the selector switch. Adjusting the setpoint requires the use of a digital voltmeter, knowledge of the transmitter's full scale range, and the desired setpoint as a percentage of the full scale range.
  • Page 41 CMSS500 Series Monitor Alert and Danger Alarm Setpoint Adjustment Figure 3 - 2. Setting Alarm Levels. SKF Machine Condition Transmitter 3- 3 User Manual...

  • Page 42: Alert And Danger Alarm Delays Adjustment

    CMSS500 Series Monitor Alert and Danger Alarm Delays Adjustment Alert and Danger Alarm Delays Adjustment The Alert and Danger alarm delays can be independently set by internal jumper selection to .1, 1, 3, 6, or 10 seconds. The purpose of the delay is to reduce nuisance alarms caused by external electrical noise and/or transient vibration events.
  • Page 43 CMSS500 Series Monitor Alert and Danger Alarm Delays Adjustment Setting Jumper Configuration Alert Time Delay 0.1 sec 1 sec 3 sec / *factory preset 6 sec 10 sec Danger Time Delay 0.1 sec 1 sec 3 sec / *factory preset...

  • Page 44: Latching / Non-Latching Alarms

    CMSS500 Series Monitor Latching / Non-latching Alarms Trip Multiply Danger Delay Alert Latch Danger Latch Ribbon Cable Alert Delay Figure 3 - 3. Monitor Jumper Locations. Latching / Non-latching Alarms The Alert and Danger alarms are factory set for non- latching operation.

  • Page 45: Trip Multiply

    CMSS500 Series Monitor Trip Multiply vibration level drops below the associated setpoint for more than about 1 second, the associated relay will de- energize and the alarm LED will turn off. The alarms can also be set for latching operation by installing shunts on jumpers E11 and E12 on the Alarm module circuit board.

  • Page 46: Alarm Relays

    CMSS500 Series Monitor Alarm Relays Alarm Relays The ALERT, DANGER and OK relays are independent, single-pole-double throw relays. NO, ARM, and NC contacts are available through a plugable screw connector at the bottom of the monitor. OK relay contacts are available on fixed screw terminals at the bottom front of the alarm module.

  • Page 47: Installing The Machine Condition Transmitter

    Installing the Machine Condition Transmitter MCT Typical Installation SKF Machine Condition Transmitter 4- 1 User Manual...

  • Page 48: Opening The Case

    On Monitors (1.6 inch / 41 mm wide units), you must first carefully separate the two halves of the unit at the center (see Figure 4-10). The sides do not need to be removed. This is done by working the screwdriver around the 4- 2 SKF Machine Condition Transmitter User Manual...
  • Page 49 If the unit is closed with the bend towards the back, the ribbon cable can be damaged. Also, make sure the ribbon cable connector does not catch on the relays when pressing the unit back together. SKF Machine Condition Transmitter 4- 3 User Manual...

  • Page 50: Interfacing The Mct With Other Monitoring Systems4

    Interfacing to SKF Reliability Systems Products Consider the following interface options: * Use SKF Reliability Systems equipment to analyze MCT module readings. * Use MCT modules as a front end to on-line condition monitoring equipment. Figure 4-11 shows a combination of the above mentioned interface options.
  • Page 51 Installing the Machine Condition Transmitter Interfacing the MCT with Other Monitoring Systems Figure 4 - 31. MCT CMSS500 Series Interfacing. SKF Machine Condition Transmitter 4- 5 User Manual...

  • Page 52: Analyzing Mct Readings

    Figure 4 - 32. MCT CMSS540 Eddy Probe Interfacing. Analyzing MCT Readings Unlike other SKF Reliability Systems' analyzing products that use digital signal processing, MCT modules use analog signal processing techniques, so be careful when comparing results with digital instruments. For...

  • Page 53: Peak-To-Peak Measurements With The Microlog (Acceleration And Enveloped Acceleration)

    (for example, filter 500 Hz to 10 kHz results in a maximum analyzing frequency of 1 kHz). SKF Machine Condition Transmitter 4- 7 User Manual...

  • Page 54: Rms Measurements With The Microlog (Acceleration And Velocity)

    MCM modules, which provided a "pseudo" peak, derived from the RMS reading. True peak detection typically results in higher values when data is collected at the same measurement 4- 8 SKF Machine Condition Transmitter User Manual...
  • Page 55 For example, the older MCM has a full scale of 1 IPS and peak (pseudo) detection. An MCT velocity module with a full scale of 1.5 IPS and RMS detection will deliver the same results. SKF Machine Condition Transmitter 4- 9 User Manual...
  • Page 56 Installing the Machine Condition Transmitter Peak Detection in Velocity 4- 10 SKF Machine Condition Transmitter User Manual...

  • Page 57: Ce Installation Guide

    The cable-shield must be connected to system ground at one end only. The system dc ground should be connected to earth- ground at only one point in the system; typically by SKF Machine Condition Transmitter 5- 1 User Manual...

  • Page 58: Ce Installation Drawings

    If the remote load is referenced to earth-ground at a location different from that of the system enclosure, a current-loop isolator may be required. CE Installation Drawings MCT (+24 Vdc Power Supply Installation) 5- 2 SKF Machine Condition Transmitter User Manual...
  • Page 59 CE Installation Guide CE Installation Drawings Wiring for Internally Amplified Accelerometers SKF Machine Condition Transmitter 5- 3 User Manual...

  • Page 60: Ce Installation

    CE Installation Guide CE Installation Wiring For Velocity Transducers CE Installation MCT and Sensors 5- 4 SKF Machine Condition Transmitter User Manual...
  • Page 61 CE Installation Guide CE Installation SKF Machine Condition Transmitter 5- 5 User Manual...
  • Page 62 CE Installation Guide CE Installation 5- 6 SKF Machine Condition Transmitter User Manual...

  • Page 63: Mounting And Outline

    Appendix A Mounting and Outline CMSS500A Figure A - 33. MCT with Companion Monitor - Front View. SKF Machine Condition Transmitter A- 1 User Manual...

  • Page 64: Cmss500

    Mounting and Outline CMSS500 Figure A - 34. MCT Modules - Side View. CMSS500 Figure A - 35. MCT Transmitter only - Front View. A- 2 SKF Machine Condition Transmitter User Manual...
  • Page 65 Mounting and Outline CMSS500 Figure A - 36. MCT Transmitter Only - Side View. SKF Machine Condition Transmitter A- 3 User Manual...
  • Page 66 Mounting and Outline CMSS500 A- 4 SKF Machine Condition Transmitter User Manual...

  • Page 67: General Severity Level Guidelines

    1500 RPM, 1800 RPM, 3000 RPM and 3600 RPM. The following severity chart is in accordance with the ISO 10816-2 guidelines. For exceptions to this guideline and for more information, reference the ISO 10816-2 document. SKF Machine Condition Transmitter B- 1 User Manual...
  • Page 68 Group 2: Medium-size machines and electrical machines with shaft height between 160 mm and 315 mm that are normally equipped with rolling element bearings and operate at speeds above 600 RPM. B- 2 SKF Machine Condition Transmitter User Manual...
  • Page 69 Group 1: 300 kW – 50 MW Group 3: above 15 kW Velocity mm/sec Damage occurs 11.0 Restricted Operation Unrestricted Operation Newly Commissioned Machinery Rigid Flexible Rigid Flexible Foundation Table B - 16. Vibration Severity Chart ISO 10816-3. SKF Machine Condition Transmitter B- 3 User Manual...

  • Page 70: Vibration Enveloped Acceleration Measurements

    (such as the MCT system) is installed. The knowledge of those measurements and the machine behavior provides a good indication of effective alarm level settings. B- 4 SKF Machine Condition Transmitter User Manual...
  • Page 71 Fmax = 60,000 CPM / 1,000 Hz A scaling factor is required for other Fmax values. A scaling equation is provided in Part II. Sensor = CMSS793 or CMSS797 or MCD probe SKF Machine Condition Transmitter B- 5 User Manual...
  • Page 72 (7.5 gE). From your reference point, follow the horizontal lines right to the alert settings axis to determine your initial alert alarm setting (2.5 gE). Use the Scaling Factor chart (Figure B-2). B- 6 SKF Machine Condition Transmitter User Manual...
  • Page 73 In this case the MCT module is fulfilling a protective task together with the process control / relay system. The software CMSW5000 'Atlas For Windows' features a calculator for enveloped acceleration alarm settings and is based on identical assumptions. SKF Machine Condition Transmitter B- 7 User Manual...
  • Page 74 General Severity Level Guidelines Vibration Enveloped Acceleration Measurements For more information please visit our website www.skfcm.com, select Support. From the Support Center Home, select Application Notes. Download CM3068.PDF from the Machine Condition Transmitters category. B- 8 SKF Machine Condition Transmitter User Manual...
  • Page 75 COM terminal 3-7 Trip Multiply 3-7 Typical Power Wiring dc power 1-9, 5-1 Configuration 1-10 EMI 2-6 Vibration Enveloped Acceleration B-3 Filter Velocity B-1 Enveloped Acceleration 2-16 Full scale 2-3 Grounding 1-11 SKF Machine Condition Transmitter Index- 1 User Manual...
  • Page 76 General Severity Level Guidelines Vibration Enveloped Acceleration Measurements Index- 2 SKF Machine Condition Transmitter User Manual 주식회사 광 호 T. 061-684-2136 F. 061-684-2137 E. kh-br@hanmail.net...

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