GE Bently Nevada 1900/27 Operation And Maintenance Manual
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GE Bently Nevada 1900/27 Operation And Maintenance Manual

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Operation and Maintenance Manual
Bently Nevada™ Asset Condition Monitoring
1900/27 Vibration Monitor
Part Number 190127-01
Rev. F (09/07)
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Summary of Contents for GE Bently Nevada 1900/27

  • Page 1 Operation and Maintenance Manual Bently Nevada™ Asset Condition Monitoring 1900/27 Vibration Monitor Part Number 190127-01 Rev. F (09/07)
  • Page 2 1900/27 Vibration Monitor Operation and Maintenance Manual Copyright 1994. Bently Nevada LLC. All rights reserved. The information contained in this document is subject to change without notice. The following are trademarks of the legal entities cited: Sealtite® is a registered trademark of Anamet Inc. Teflon®...

  • Page 3: Contact Information

    Contact Information The following ways of contacting Bently Nevada are provided for those times when you cannot contact your local representative: Mailing Address 1631 Bently Parkway South Minden, Nevada USA 89423 Telephone 1.775.782.3611 1.800.227.5514 1.775.215.2873 Internet www.ge-energy.com/bently...

  • Page 4: Additional Information

    1900/27 Vibration Monitor Operation and Maintenance Manual Additional Information Notice: This manual does not contain all the information required to operate and maintain the product. Refer to the following manuals for other required information. 200150, 200155, and 200157 Accelerometers Information and Installation Guide (Part Number 164985-01) 89129 and 190520 Accelerometer User Guide (Part Number 89134-01) Product Disposal Statement...

  • Page 5: Table Of Contents

    Contents 1. 1900/27 Vibration Monitor Description ............. 1 Features..............................1 Monitor Connections, Indicators, & Controls................4 2. Installation ...................... 6 Receiving Inspection........................6 Jumper Settings..........................6 2.2.1 Setting Relays for Latching or Non-Latching Behavior..........7 2.2.2 Setting Relays for Normally Energized or Normally De-energized Behavior ..7 2.2.3 Setting 4 to 20 mA Interface Behavior During 1900/27 Monitor Bypass....
  • Page 6 1900/27 Vibration Monitor Operation and Maintenance Manual Setpoint Adjustment ........................26 Resetting the Monitor........................28 Buffered Transducer Output.......................28 Initiating a Monitor Self Test......................28 4. Maintenance & Troubleshooting ...............29 General Maintenance........................29 Monitor Adjustments ........................30 4.2.1 LCD Zero Adjustment........................30 4.2.2 Adjustment of the Monitor's 4 to 20 mA Current Loop Interface......32 Troubleshooting..........................35 5.

  • Page 7: 00/27 Vibration Monitor Description

    Section 1 - 1900/27 Vibration Monitor Description 1. 1900/27 Vibration Monitor Description The 1900/27 Vibration Monitor provides continuous vibration monitoring for machinery where most of the shaft vibration is transmitted through the bearing to the case. Vibration amplitude is a primary indicator of the overall mechanical condition of rotating machinery.
  • Page 8 1900/27 Vibration Monitor Operation and Maintenance Manual Relay BYPASS - A relay BYPASS switch lets you disable both relays while you adjust the relay setpoints or maintain the machinery. This feature prevents false alarms or undesired machinery shutdowns. When the monitor is bypassed, the red BYPASS LED is on.
  • Page 9 Section 1 - 1900/27 Vibration Monitor Description Programmable options provide flexibility and a wide range of standard features. Internal Jumper Options: Normally Energized/De-energized Relays - The Alert and Danger relays can be be either normally energized or normally de-energized. The normal condition of a relay corresponds to its non-alarm condition.

  • Page 10: Monitor Connections, Indicators, & Controls

    1900/27 Vibration Monitor Operation and Maintenance Manual segments turn on at the beginning of the self test to verify that they are operating properly. The power supplies are checked continually. 1.2 Monitor Connections, Indicators, & Controls The connections, LEDs and LCD, and control switches are shown in the next three figures.
  • Page 11 Section 1 - 1900/27 Vibration Monitor Description Figure 1-2: Location of status LED indicators and LCD dsplay location. Figure 1-3: Location of monitor switches and reset button...

  • Page 12: Installation

    1900/27 Vibration Monitor Operation and Maintenance Manual 2. Installation This section describes how to install the 1900/27 Vibration Monitor. It includes information on how to configure the monitor for your particular application using the monitor's internal jumpers and the configuration switches on the front panel. This section also describes how to connect the Accelerometer to the 1900/27 Vibration Monitor.

  • Page 13: Setting Relays For Latching Or Non-Latching Behavior

    Section 2 - Installation 2.2.1 Setting Relays for Latching or Non-Latching Behavior A latching relay stays in an alarm state even after the vibration has dropped below the setpoint level for that relay. A non latching relay moves from its alarm state to its non-alarm state once the vibration drops back below the setpoint level for that relay.

  • Page 14: Setting 4 To 20 Ma Interface Behavior During 1900/27 Monitor Bypass

    1900/27 Vibration Monitor Operation and Maintenance Manual 2.2.3 Setting 4 to 20 mA Interface Behavior During 1900/27 Monitor Bypass With the BYPASS Mode jumper installed the 4 to 20 mA circuit responds to a relay bypass condition at the monitor by sending a NOT OK signal (less than 3 mA) to the plant computer.

  • Page 15: Internal Jumper Location

    Section 2 - Installation 2.2.4 Internal Jumper Location Figure 2.1 shows the location of the jumpers on the monitor's circuit board. To set the jumpers follow these steps: 1. Remove the case cover: Pull the case cover straight up. The inside of the case cover has a label that summarizes the jumper settings.

  • Page 16: Configuration Switch Settings

    1900/27 Vibration Monitor Operation and Maintenance Manual 2.4 Configuration Switch Settings Use the 6-position configuration switch on the front panel of the monitor to program the relay time delays, the alert relay alarm condition, English or metric units, and to initiate a monitor self test. 2.4.1 Relay Time Delay Relay time delay is the amount of time that the vibration must continuously exceed the setpoint before an alarm occurs.

  • Page 17: Configuring The Display For English Or Metric Units

    Section 2 - Installation 2.4.3 Configuring the Display for English or Metric Units English/Metric Units lets you choose which measurement units are used to display the overall vibration level on the LCD as shown in Table 2.6. You may need to re- adjust the zero of the display slightly if you change the units.

  • Page 18: Connecting Remote Reset

    1900/27 Vibration Monitor Operation and Maintenance Manual 2.5 Connecting Remote Reset Mounting an external reset switch (or button) at a remote location lets you reset the monitor without having to open the weatherproof housing. The remote reset switch can be mounted up to 305 m (1000 ft) from the monitor. Connect the remote reset switch between the REMOTE RESET A and B contacts.
  • Page 19 Section 2 - Installation Example: Suppose your 4 to 20 mA system has the following characteristics: • The minimum loop supply voltage is 24 V. • The receiver has a source supply resistance of 250 ohms. • The cable impedance is 12 milliohms/ft. •...
  • Page 20 1900/27 Vibration Monitor Operation and Maintenance Manual Figure 2-10: 4 to 20 mA connections...

  • Page 21: Relay Connections

    Section 2 - Installation 2.7 Relay Connections Alert and Danger relays give two levels of alarm. Use the Alert relay to annunciate high vibration that is nearing the Danger (shutdown) setpoint. Possible annunciators include a buzzer, horn, light, or a signal sent to the plant computer. The Danger relay is dedicated to the Danger setpoint and will go into its alarm state when the vibration level exceeds the Danger setpoint.

  • Page 22: Alert Relay Configuration

    1900/27 Vibration Monitor Operation and Maintenance Manual 2.7.1 Alert Relay Configuration The Alert relay can be configured in the field to give an alarm condition from one of four different conditions: Alert setpoint, Alert setpoint logically OR'ed with NOT OK, NOT OK, and the Danger setpoint. Section 2.5.2 shows how to set this relay. Table 2.8 lists the Alert relay configurations and the suggested application for each one.

  • Page 23: Relay Internal Jumper Settings

    Section 2 - Installation 2.7.2 Relay Internal Jumper Settings Section 2.2.4 shows how to set the Relay option. Table 2.9 summarizes the effect of the Relay option. TABLE 2.9: Relay Connections by Normally Energized/De-energized Jumper Settings TERMINAL RELAY OPTION SETTING (state of the relay with no alarm) Normally De- Normally Energized...
  • Page 24 1900/27 Vibration Monitor Operation and Maintenance Manual To install the cable to the terminal strip follow these steps: 1. If an outer jacket is on the relay cable then strip off about 25 mm (1 in) of outer insulation from the cable. 2.

  • Page 25: Power Connections

    Section 2 - Installation 2.8 Power Connections The power supply options are 110/220 AC and HVDC, or +24 Vdc. All monitors, regardless of the type of power supply that is chosen, are protected by an internal fuse. 2.8.1 Types of Power Connections Connect power to the monitor as shown in Table 2.10.
  • Page 26 1900/27 Vibration Monitor Operation and Maintenance Manual To install the cable to the terminal strip follow these steps: 1. If an outer jacket is on the power cable then strip off about 25 mm (1 in) of outer insulation from the cable. 2.

  • Page 27: Field Wiring Diagram

    Section 2 - Installation 2.9 Field Wiring Diagram A typical field wiring diagram is shown below. Figure 2-14: Typical 1900/27 field wiring installation.

  • Page 28: Monitor Operation

    1900/27 Vibration Monitor Operation and Maintenance Manual 3. Monitor Operation This section describes how to operate the monitor. Included is information about the displays and indicators and how to interpret the information they provide. 3.1 Monitor Display The liquid crystal display (LCD) on the front panel of the 1900/27 monitor shows vibration data in either English or Metric units.

  • Page 29: The Display Mode Switch

    Section 3 - Monitor Operation 3.1.2 The Display Mode Switch Setpoint levels can be shown on the display by using the three-position Display Mode switch. The positions of the Display Mode switch are Normal, Alert, and Danger. Table 3.1 shows the effects of the Display Mode on the LCD. Table 3.1: Display Mode Switch SWITCH SETTING DISPLAY...

  • Page 30: Display Error Codes

    1900/27 Vibration Monitor Operation and Maintenance Manual 3.1.3 Display Error Codes Error codes are displayed on the left side of the LCD as shown in Figure 3-2. If an error is detected the appropriate error code is displayed on the LCD. There are three error codes: Power supply error (continuously checked) Signal path error (checked only during self test)

  • Page 31: Led Indicators

    Section 3 - Monitor Operation Error code E2 is caused by a fault in the signal path. A signal path fault can only be detected during a user initiated self test. If a signal path error is detected during a self test, then an E2 error code will be shown on the LCD display. The signal path check, which is made during self test, verifies that the peak-to-peak detector and the setpoint threshold detectors are working properly.

  • Page 32: Relay Mode Switch

    1900/27 Vibration Monitor Operation and Maintenance Manual 3.3 Relay Mode Switch The Relay Mode switch lets you inhibit relays by placing the monitor in bypass. The Relay Mode switch has two positions, Normal and Bypass. Table 3.3 describes the behavior of the Relay Mode switch. Table 3.3: Relay Mode Switch SWITCH SETTING EFFECT ON RELAYS...
  • Page 33 Section 3 - Monitor Operation Use a small screwdriver to adjust the setpoints. Figure 3-3 shows the location of the switches and adjustment screws used in this prodedure. Adjust the setpoints according to the following steps: 1. Place the monitor into Bypass by sliding the Relay Mode switch to the Bypass position with the small screwdriver.

  • Page 34: Resetting The Monitor

    1900/27 Vibration Monitor Operation and Maintenance Manual 3.5 Resetting the Monitor Use reset to unlatch a latched relay or to stop a flashing LED. You can reset the monitor by pushing the Reset switch on the front panel or by pressing a remote reset button that is connected to the remote reset terminals.

  • Page 35: Maintenance & Troubleshooting

    Section 4 - Maintenance & Troubleshooting 4. Maintenance & Troubleshooting This section describes how to maintain and trouble shoot your 1900/27 monitor. Instructions on how to adjust the LCD's zero potentiometer and the 4 to 20 mA interface's gain adjust potentiometer are included if this procedure should ever become necessary.

  • Page 36: Monitor Adjustments

    1900/27 Vibration Monitor Operation and Maintenance Manual 4.2 Monitor Adjustments Two circuits of the 1900/27 monitor may require adjustment. Since these circuits are set at the factory, they should not require adjusting during installation. However, if you suspect that the monitor is out of adjustment, use the following two procedures to adjust these circuits in the monitor.
  • Page 37 Section 4 - Maintenance & Troubleshooting The calibration procedure for the LCD is described in the following steps: 1. Remove the case cover by placing pressure with a screwdriver, or similar object, between the case cover and base. 2. Locate the LCD zero adjust potentiometer labeled R20. It is next to the dip switch on the top circuit board.

  • Page 38: Adjustment Of The Monitor's 4 To 20 Ma Current Loop Interface

    1900/27 Vibration Monitor Operation and Maintenance Manual The zero point of the LCD is now properly set. There is no span adjustment for the LCD display. This zero adjust procedure zeros the LCD display for the monitor only. Once a transducer is connected to the monitor, a low value LCD reading, less than 0.250 mm/s (0.010 in/s), will be present when no vibration is present.
  • Page 39 Section 4 - Maintenance & Troubleshooting Adjust the 4 to 20 mA interface according to the following steps: 1. Remove the case cover by applying pressure with a screwdriver, or similar object, between the case cover and the base. 2. Locate the 4 to 20 mA zero and gain adjust potentiometers on the bottom circuit board.
  • Page 40 1900/27 Vibration Monitor Operation and Maintenance Manual 7. With the sinewave generator powered off, measure the DC voltage across the “LOOP +” and “TEST” connections on the 4 to 20 mA terminal block. The voltage should be about 0.40 Vdc. If it is not, adjust the zero adjust potentiometer (R16) until the voltage is 0.40 Vdc.

  • Page 41: Troubleshooting

    Section 4 - Maintenance & Troubleshooting 4.3 Troubleshooting Use Table 4.2 to help solve problems encountered while using the 1900/27 Vibration Monitor. If the solutions suggested in this table do not solve your problem, contact your nearest Bently Nevada Product Service Representative. Table 4.2: Troubleshooting Problem Possible Solution...
  • Page 42 1900/27 Vibration Monitor Operation and Maintenance Manual Problem Possible Solution The LCD is blank, except The input to the LCD circuit is above full scale. Check • for the leftmost digit the input vibration with a portable vibration analyzer, or isdisplaying a 1.
  • Page 43 Section 4 - Maintenance & Troubleshooting Problem Possible Solution E3 error is displayed on Verify that connectors are firmly seated and • LCD (NOT OK Condition free of corrosion detected). Verify transducer is properly wired • Verify no shorts exist between wires at connector •...

  • Page 44: Appendix A - Performance Specifications

    1900/27 Vibration Monitor Operation and Maintenance Manual 5. Appendix A - Performance Specifications 5.1 1900/27 Monitor Specification Note: Operation outside the specified limits will result in false readings or loss of machine monitoring. 5.1.1 Mechanical Specifications Dimensions (see Figure A-1): Length: 5.20 in (132 mm)
  • Page 45 Section 5 - Appendix A - Performance Specifications Figure A-1: 1900/27 Mechanical Dimensions.

  • Page 46: Monitor Power Specifications

    1900/27 Vibration Monitor Operation and Maintenance Manual 5.1.3 Monitor Power Specifications AC/HDC Version AC Voltage: 85 Vac to 264 Vac DC Voltage: 110 Vdc to 370 Vdc ess than 0.12 A Current: Frequency: DC or 47 Hz to 440 Hz Low DC Version Voltage: 18 Vdc to 36 Vdc...

  • Page 47: Accuracy

    Section 5 - Appendix A - Performance Specifications Frequency Response: High Pass Corner: 3 dB corner at 8 Hz. Less than 1% error due to high pass corner for frequency above 30 Hz. Low Pass Corner: Greater than 4 kHz. Less than 1% error due to low pass corner for frequency below 4 kHz.

  • Page 48: Monitor Controls

    1900/27 Vibration Monitor Operation and Maintenance Manual 5.1.8 Monitor Controls Display Mode Switch: Three positions: Normal, Alert Setpoint, and Danger Setpoint. Controls what is shown on LCD display. Relay Mode Switch: Two positions, Normal and BYPASS, control whether the monitor is in normal or Bypass mode. Reset Button: Push to reset latched relays and flashing LEDs.

  • Page 49: Appendix B - Peak Detection Methods

    Section 6 - Appendix B - Peak Detection Methods 6. Appendix B - Peak Detection Methods Understanding the methods for peak to peak amplitude detection of a vibration signal can help you understand why the 1900/27 Vibration Monitor is more accurate than some other monitors and why the readings of the 1900/27 and the Trendmaster 2000 can differ slightly under certain circumstances.

  • Page 50: Appendix C - 1900/27 Monitor Configuration Form

    1900/27 Vibration Monitor Operation and Maintenance Manual 7. Appendix C - 1900/27 Monitor Configuration Form The following page contains a form that can be used to record internal jumper settings, configuration switch settings, and setpoints for the 1900/27 monitor. The configuration form may be copied.
  • Page 51 Section 7 - Appendix C - 1900/27 Monitor Configuration Form 1900/27 Vibration Monitor Configuration Form Monitor Configuration: Point Plant Name : ___________________________________________ Location Unit Name : ___________________________________________ Machine Name : ___________________________________________ Machine Type : ___________________________________________ Transducer Orientation: Radial | Axial Angle: ________________ Orientation Zero Degree Reference: ____________________________...

  • Page 52: Appendix D - Accessories And Spare Parts

    1900/27 Vibration Monitor Operation and Maintenance Manual 8. Appendix D - Accessories and Spare Parts 8.1 Installation Hardware The following items listed below can be used as part of the installation of the 1900/27 Vibration Monitor. Weatherproof Enclosure A weatherproof enclosure protects the 1900/27 Vibration Monitor from wet and corrosive environments.
  • Page 53 Section 8 - Appendix D - Accessories and Spare Parts Fittings 3/4 inch NPT chrome plated zinc hub fitting. 03813103 1-1/4 inch NPT chrome plated zinc hub fitting. 03813106 3/4 inch to 1/2 inch NPT reducer. 26650-01 1-1/4 inch to 1 inch NPT reducer. 26650-03 1/4 inch NPT cable seal;...

  • Page 54: Spare Parts

    1900/27 Vibration Monitor Operation and Maintenance Manual 8.2 Spare Parts An on-site supply of spare parts allows for immediate and efficient maintenance or expansion of your 1900/27 Vibration Monitor System. Bently Nevada recommends that the following components be available as spare parts. Cable connector plugs A 7 position connection plug is required for connecting the transducer and 4 to 20 mA system cables to the 1900/27 Vibration Monitor.

  • Page 55: Appendix E - Hazardous Area Approvals

    Section 9 - Appendix E - Hazardous Area Approvals 9. Appendix E - Hazardous Area Approvals Canadian Standards Association Approvals The 1900/27 vibration monitor is CSA NRTL/C approved for Class 1, Division 2, Groups A,B,C,D hazardous areas when installed per drawing 105352. The table below lists the approval drawings in the order they appear.

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