Industrial Electrical Troubleshooting - Motors, controllers and PLCBy Larry Bush. Troubleshooting In The. Field - Motor Testing - Motor. Controller - Programmable. Logic Controllers (PLC)A laptop computer with PLC programming, communication, and operating programs. Engineers, production supervisors.
PLC and computer. On the job training on PLC's is usually not very effective until the person. Knowledge and skills in electricity, troubleshooting, and computer operation are.
Find helpful customer reviews and review ratings for Industrial Electrical Troubleshooting (Electrical Trades S) at Amazon.com. Read honest and unbiased product.
PLC training. The author. The manufacturer's course covered essentially the same material as a course.
JC). The major differences were the amount of study time. The JC course was four hours of class time per week for 1. There were three hours of shop time doing actual hands on work of the problems. Additional time was spent at home. Also, the JC was open at night for. PLC's and computers. In contrast, the manufacturer's course was five, eight hour days.
Simutech's Troubleshooting Skills Training System Course: Troubleshooting Industrial Controls (TIC). Industrial Electrical Troubleshooting by Lynn Lundquist starting at $135.67. Industrial Electrical Troubleshooting has 1 available editions to buy at Alibris.
Industrial Electrical Troubleshooting Tips
- This article helps with electrician training by describing a systematic electrical troubleshooting approach for industrial equipment and troubleshooting circuits.
- Experienced Machine Shop technicians can help with your industrial machine shop. Industrial Electrical Company offers on-site pick up and delivery free of charge.
- Industrial Electrical Troubleshooting demonstrates the efficient use of certain electrical meters to troubleshoot relay-logic circuits with a single setting.
- Industrial electrical troubleshooting article with sections on industrial motor control and programmable logic controller. Solving problems with motor test and short.
Class work. was extremely fast and condensed in order to cover the amount of material. The instructor was very knowledgeable and covered the course material.
By the end of each day, our minds were jammed with. By the end of the week, we all passed the course, but I had a hard.
Basic troubleshooting techniques apply to every situation and occupation. Positive identification of the problem(s) is absolutely essential to solving the.
Many times, the inexperienced troubleshooter will mistake one or more. Solving the symptom(s) will normally just. By which time, the problems may have.
An example is when a person experiences a headache and takes a mild pain. The actual problem might be any number of things. The same thing occurs.
There are many things that. Excess current caused the fuse to open (blow).
Excess current could have been. If the maintenance person does not troubleshoot the circuit prior to. It is not uncommon for a process to develop a number of small problems and. Then, one. more small problem occurs and the whole process breaks down.
Finding and. correcting the last problem will not necessarily restore the operational. The process continued operations with the small. All the other small problems must be identified and corrected before. This situation arises in industry as well as a person.
The person can. continue to function with a number of small problems, such as fatigue, blood. Clearing the blood clot does no good to the person. They will not be restored to. Unless prior experience dictates otherwise, always begin at the beginning. Ask questions of the Operator of the faulty equipment: * Was equipment running when problem occurred?* Does the Operator know what caused the problem, and if so, what, in their. Is the equipment out of sequence?* check to ensure there is power* turn on circuit breaker, ensure motor disconnect switch is on, and operate.
Use voltmeter to check the following at incoming and load side of circuit. VAC between phases and 2. VAC. to neutral on a grounded system* low voltage control power, usually 2.
VAC and/or VDC between phases. Check controlling sensors in area of problem, then make complete check of all. If and when a problem is found, whether electrical or mechanical, the problem. When there is more than one fault, the troubleshooting is exponentially more. If available, check wiring diagrams and PLC programs to isolate problem. Variable Frequency Drive (VFD) can be reset by turning power off, wait till.
VFD's, press Stop/Reset - then press. Start. Check that wiring is complete and that wires and connections are tight with. Ensure that the neutral reading is good and that the neutral is complete and. In Shop: Prior to connecting a motor: * move motor to electric shop motor test and repair station* connect motor leads for 4.
A to B, B to C, A to C* use megohmmeter to check insulation resistance to ground of motor windings. T" leads. for motor amperage; check for abnormal sounds and heat in bearings or windings. Motor Testing In Field: When a motor overload or circuit breaker trips and/or blows fuses, certain. T1, T2, & T3 leads and ground, then; * test "T" leads to motor with ohmmeter for continuity and ohmage. A to B, B to C, A to C; each resistance should be within 1.
T" leads, again; if the. A to C, B to. C, A to C; one or more wires will be open or grounded; * correct solution is to pull all new wires in from controller to motor. A to B, B to C, A. C, readings should be within 1 or 2 ohms of each other; if readings indicate. OK, reconnect motor, remove lockout, and restore to.
Full Load Amps (FLA) at motor and check setting on controller. OL) device; most newer OL devices are adjustable between certain. OL devices use heaters for a given amperage* if circuit disconnecting means in controller is a circuit breaker, it.
Motor Circuit Protector (MCP), the MCP must. MCP has a trip setting. Full Load Amperage of the motor. FLA; example: a motor FLA of 1.
MCP trip device be set to an instantaneous trip point of 1. FLA): * check to ensure main power is on( 1. VAC* check 2. 4V power available* identify problem area* check sensor operation in problem area* check sensor Inputs to PLC* check on PLC that a change in sensor state causes the corresponding Input. LED on the PLC to go on or off* identify Output controlled by Input on PLC ladder diagram* ensure that Output LED is cycling on/off with Input* check that Output voltage is correct and cycling on/off with Input* locate Output device and ensure that voltage is reaching device and cycling. Input* ensure that Output device is working correctly (solenoid coil, relay coil. Input or Output module can be defective in one area or circuit and work.
PLC prior to changing any module - main power and 2. V power* locate fault in field circuit by disconnecting wires at module and field. PLC can be reset using the Reset key switch; ensure that. PLC off won't interrupt other running sub- set programs, turn keys. PLC program can have a latch relay with no reset under certain.
PLC off and back on, this operation may reset the latch and. PLC is usually part of a control circuit supplied with 1. VAC through a. 4. V/1. 20. V transformer as part of a system with motors, controllers, safety.
V power off/on. will be necessary to try to reset all the safety and control circuits* possession and use of an up- to- date ladder diagram, elementary wiring. About the Author: Larry Bush has. Download. his new e- Book "Maintenance. Policy and Procedures Manual" !! Troubleshooting Skills Training Series CBT.
Troubleshooting Industrial Controls (TIC)Overall, it seems as if the software was created to satisfy the challenges and troubleshooting objectives of my training environment. Because the student is required to find and fix the fault in a sufficient amount of time, and sometimes with minimal repairs, they are almost forced to master a troubleshooting procedure which I am sure will be beneficial throughout their career. In my opinion, this challenge keeps the students engaged and excited while utilizing the software. Kevin B., Instructor, NECA/IBEW Local 2.