This 2 day seminar is invaluable for technicians needing to know about
drives in an industrial and process control environment. We will explore power
quality in your facility, remote drive control, advanced communication between
multiple drives, compensating for slip, the negative impact on the general duty
motor, boosting torque, and how to determine when to skip frequency. After
attending this seminar, your VFD skills will be greatly enhanced and will help
minimize downtime in your workplace.
Day One - Discussion Topics
Electrical Basics Review
- Personal Protective Equipment and Insulated Tools
- Electrical Hazards and Safe Approach Distances
- LOTO (Lockout – Tagout)
- Meters: Mulitmeter, Clamp-On, Megohmmeter
- Motor and Control Circuit Basics, and Troubleshooting
What VFDs Do
- Benefits of Using a VFD
- Motion Control / Motor Speed
- Air and Liquid Flow / Pressure Control
Load Types
- Constant Torque - Conveyors, Pumps, etc
- Variable Torque - Fans, Pumps, Tools, etc
VFD Options
- Bypass - Two or Three Contactor Style, Disconnect Switch
Style, Soft Starter
- Fusing - VFD or Bypass Protection
- Input / Output Reactors
- Motor Overload Device
- Transient Protection
- Auxiliary Relays
- Power Line Phase Reversal Detection
Installation of a VFD
- Environmental Concerns
- Clearances
- Conduit Entry
Customer Connections
- Safety Circuit
- Start / Stop, and Jog Circuits
- Status and Fault Indication
- Remote Speed Reference
- Monitoring of Motor Parameters
Wiring & Grounding VFDs
- Induced Signals
- Inductive, Capacitative
- Incoming Power (line), Motor, and Control Wiring
- Proper Grounding Methods
Controlling a VFD
- Keypad Controls
- Terminal Strip Control - Automatic, Manual
- Bus Communication Control
- Open and Closed Loop Control
- Manual and Automatic Operation
- Sensorless Flux Vector
- PI Loop Configuration
- Sensor or Transducer Feedback
- Motor Shaft Encoder Feedback
Day Two - Discussion Topics
VFD Setup, Programming and Troubleshooting
- Language & Display
- Control Modes
- Open Loop, Closed Loop
- Motor Power (kW), RPM, Voltage, and FLA Current
- Service and Power Factors
- Speed References & Limits
- Motor Speeds – Min, Max and Preset
- Ramp Times
- Skip, Switching, and Start-up Frequencies
- Limits for Alarms or Faults
- Inputs / Outputs – Analog, Digital, and Relay
- Application Functions
- Reset
- Flying Start
- Sleep Mode
- No Load
- Phase Loss
- Closed Loop Functions
- Normal / Inverse
- Anti Windup
- Integral Time / Differenti Insulated Tools al Time
- Proportional Gain / Differential Gain
- Lowpass Filter
The Electrical Hazards associated with VFDs
- Osha and NFPA 70E® regulations
- Electrical Hazards
- Risk Assessment
- Importance of LOTO (Lockout – Tagout)
- Proper Personal Protective Equipment
- Approach distances from energized conductors
How closed loop control can improve torque
- Give positive shaft position indication
- Maintain constant torque regardless of speed
- Develop continuous full torque at zero speed
- Function similar to a servo drive
How encoder feedback provides wider ranges of control
- More process variables to control drives
- Improved speed regulation and control
- Ability to run at a higher reference frequency
- High-speed control without high dynamic responses
Learn how to control multiple motors from one VFD
- Sizing the drive for total current
- Implementing external motor overload protection
- Correct sizing of conductors, contactors and overloads per NEC®
Article 430
Types of transducers available for different applications
- Pulse Type (digital encoder)
- Voltage Feedback (0-5, 0-10VDC)
- Current loop 4-20 ma
- 3-15 Pressure transducer
Learn how Power Quality is impacted by the VFD
- Harmonics in your facility
- Voltage Regulation
- EMI filtering
- Types of Solutions to mitigate Power Quality issues
How one source can control multiple VFDs
- Programmable Logic Controller (PLC)
- Building Management Systems
- SCADA Systems
- Advanced troubleshooting with VFD fault codes
- Comprehensive fault diagnostic system
- Fault Name and Description
- Corrective Actions
- Warning Message
Documentation of the parameters written within the drive manual to help
solve advanced problems
- Startup and Power Quality reports
- Motor and load information
- Documentation of all parameters used
Learn how monthly and annual preventive maintenance can extend the life
of your drive.