Variable Frequency Drive Advanced Applications
TPC Trainco

Delivery Method

Seminar

Target Audience
Plant maintenance personnel who work with variable frequency drives

Summary
This 2 day seminar is invaluable for technicians needing to know about drives in an industrial and process control environment.

Description/Agenda

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.

All Date/Location Information