User's Manual
Table Of Contents
- Home
- Contents
- CSI 2140 Machinery Health Analyzer
- Introduction to the analyzer
- Transfer files with CSI 2140
- AMS Machinery Manager Data Transfer
- AMS Machinery Manager Standalone Data Transfer application
- Communication setup
- Routes and jobs
- Load a route from AMS Machinery Manager into the analyzer
- Load multiple routes from AMS Machinery Manager to the analyzer
- Load a Balance job from AMS Machinery Manager into the analyzer
- Dump a job from the analyzer to AMS Machinery Manager
- Dump a route from the analyzer to AMS Machinery Manager
- Dump a route or job from the analyzer to a folder on a computer
- Analyzer firmware and programs
- Screen captures
- Splash screens
- Printing
- Route
- Route overview
- Manage routes
- Set data collection and display parameters
- Set the plot type for collected data
- Enable or disable Point Advance to automatically move to the next measurement point
- Set High Frequency Detection averages
- Set the route data storage mode
- Set the overlap
- Set the plot type for live data
- Set the overall mode
- Set the integrate mode
- Enable or disable multi-channel group data collection
- Display a summary of data collected for grouped measurement points
- View or hide warning alarms on the Route Data Collection screen
- Restore default values for route data collection and display parameters
- Override the sensor setup for a route
- Enter new speed or load for a measurement point
- Tachometers
- Multiple inputs and measurements
- Collect route data
- Notes
- Plot data
- Run Analyze to collect data for a route measurement point
- View the measurement point setup and history
- Route reports
- Plots
- Analyze and Advanced Analyze
- Analyze overview
- Manage jobs
- Job Setup
- View all saved Analyze jobs
- Create an Analyze job
- Open a saved Analyze job
- Change the job ID
- Edit the equipment ID and description in a job
- Edit the measurement ID and description in a job
- Add a measurement
- Delete a measurement
- Delete data from the current measurement point
- Save a job to equipment in a route
- Set display parameters
- Multi-input measurements
- Sensors and inputs
- Tachometers
- Common data collection parameters
- Collecting data using an Analysis Expert
- Recommended uses of Analysis Experts
- Enable or disable the help text in the Analysis Experts
- High Frequency Analysis
- High Resolution Analysis
- Bearing/Gear Analysis - PeakVue
- Low Frequency Analysis - Slow Speed Technology
- Turning Speed Detection
- Laser Speed Detection
- Bump Tests
- Bump Test Equipment Off
- Bump Test Equipment Running
- Coast Down Peak Hold
- Coast Down Peak and Phase
- Rotor Bar Test Motor Current
- Order Tracking
- Synchronous Analysis
- Synchronous Analysis and Synchronous Averaging
- Orbit Plot
- Cross Channel Amplitude/Phase
- Collect data using Manual Analyze
- Listen to live vibration data in Analyze
- Redo a measurement
- Store data to a route or a job
- Review collected data
- Print an Analyze plot to AMS Machinery Manager
- Print a plot to a memory card
- Reset Analyze defaults
- Advanced Transient
- ODS/Modal
- ODS/Modal overview
- Manage jobs
- Sensors and inputs
- Tachometers
- Set up the plots
- Set up the job
- Collect ODS/Modal data
- Display the data for a measurement point
- Print an ODS/Modal plot to AMS Machinery Manager
- Print an ODS/Modal plot to a memory card
- Balance
- Balance overview
- Manage jobs
- Job Setup
- Sensor Setup
- Measurement Plane Setup
- Weight Plane Setup
- Acquire Data
- Balance correction
- Trim run
- One-run balance job
- Notes
- Balance summary reports
- Review balance data
- Manually enter balance job data
- Calculator Mode
- Determine another location to place weights
- Combine multiple weights on a rotor
- Calculate a new balance solution to use only the available weights
- Calculate weight placement using static and couple components
- Estimate trial weights
- Calculate weight location around the outside rotor circumference
- Calculate new balance solution to use only available locations and weights
- Amplification Factor
- Convert magnitude or frequency values to a different measurement unit
- Tips and additional information
- Balance accessories
- Technical specifications
- Glossary
- Index
Key concepts for balancing machines
• Imbalance causes vibration to occur at the rotational frequency (1xRPM) of the
imbalanced rotor.
• The vibration is directly proportional to the amount of imbalance. Doubling the
amount of the imbalance doubles the amount or magnitude of the vibration.
• A shift in the heavy spot results in an equal shift in the phase angle.
• All weights in a single plane sum vectorially to equal a single heavy spot.
• The amount of imbalance is measured in weight and distance from the center of the
rotor (radius). The units include oz., in., gm-in., or gm-cm. Increasing the weight or
the radius increases the amount of the imbalance in direct proportion.
• Rotors operating below their first critical are called rigid rotors and can be balanced
in any two planes. Rotors operating above their first critical are called flexible rotors
and may require balance weights in more than two planes.
Problems that appear at rotational frequency (1xRPM)
Imbalance always causes vibration at 1xRPM, but other problems can cause 1xRPM
vibration, including:
• Misalignment
• Bent or bowed shaft
• Cracked shaft
• Eccentricity
• Case strain
• Open rotor bars in motors
• Partial rubs
• Obstructions in one vane of a pump or fan.
Problems that allow an unusually high system response as a result of 1xRPM faults include
resonance/critical speed and looseness or low support stiffness.
9.16.2 Tips for balance jobs
A repeatable balancing procedure can increase the reliability of your data, reduce the
required runs, and improve the precision of the balance job. Ensure all variations in phase
and magnitude are due to changes from weights, not due to poor technique.
Visually inspect the equipment
Before you attempt to balance the equipment, check for leaks, cracks, hot bearings,
unusual noises or vibration patterns, base/mounting condition, or foreign materials on the
rotor. Use the Notes feature to attach observations to the equipment data.
You may have multiple problems if, for example, there is high 1xRPM due to imbalance
and prominent harmonics of 1xRPM due to structural looseness. The degradation of the
structure may cause the resonant frequency to move closer to the operating frequency.
Balancing this equipment without addressing the structural and resonance concerns can
Balance
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DRAFT