ELECTROTECHNOLOGY—ADVANCED LEVEL(电工——高级)

Module 1 Maintenance and troubleshooting of common electrical control circuits 1 【General Introduction】 1 【Training Objectives】 1 【Training Requirements】 3 【Work Tasks】 4 Task 1 Maintenance and troubleshooting of common faults in the electrical control circuit of CA6140 lathe 4 Task 2 Maintenance and troubleshooting of common faults in the electric control circuit of electric hoist 9 Task 3 Maintenance and troubleshooting of common faults in the electrical control circuit of M7120 surface grinder 14 【Extended Practices】 22 Exercise 1 Maintenance and troubleshooting of Z3050 radial drilling machine circuit 22 Module 2 Comprehensive training of power electronic circuit technology 28 【General Introduction】 28 【Training Objectives】 28 【Training Requirements】 30 【Work Tasks】 31 Task 1 Comprehensive training of three-phase bridge-type fully-controlled rectifier circuit 31 Task 2 Comprehensive training of three-phase AC voltage regulating circuit 43 Task 3 Comprehensive training of PWM controlled switching regulated power supply 48 【Extended Practices】 53 Exercise 1 Comprehensive training of BJT single-phase parallel inverter circuit 53 Exercise 2 Comprehensive training of given integral circuit 56 Module 3 Comprehensive training of electric drive system 60 【General Introduction】 60 【Training Objectives】 60 【Training Requirements】 63 【Work Tasks】 63 Task 1 Basic training of fast speed regulation of MM420 inverter 63 Task 2 Basic training of multi-stage speed regulation of MM420 inverter 72 Task 3 Training of analog smooth speed regulation of MM420 inverter 77 【Extended Practices】 80 Exercise 1 Motor start-stop operation training based on PLC and inverter 80 Exercise 2 Based on PLC, inverter motor forward and reverse running training 82 Module 4 Comprehensive training of programmable logic control system 85 【General Introduction】 85 【Training Objectives】 85 【Training Requirements】 87 【Work Tasks】 88 Task 1 Programming and debugging of automatic feeding and loading control system 88 Task 2 Programming and debugging of traffic light automatic control system 100 Task 3 Programming and debugging of four-floor elevator control system 113 【Extended Practices】 126 Exercise 1 Programming and debugging of tower light control system 126 Exercise 2 Programming and debugging of fully automatic washing machine control system 128 Module 5 Programming and debugging of YL-335B automatic production line 131 【General Introduction】 131 【Training Objectives】 132 【Training Requirements】 133 【Work Tasks】 134 Task 1 Programming and debugging of feeding unit control system 134 Task 2 Programming and debugging of processing unit control system 153 Task 3 Programming and debugging of assembly unit control system 161 【Extended Practices】 172 Exercise 1 Programming and debugging of the sorting unit control system 172 Appendix 177 Appendix 1 Training standards for advanced skills of electricians 177 Appendix 2 Question bank of electronics for advanced level (with answers) 182 Reference 198