YASKAWA Varispeed G7 Series

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Maintenance and

Inspection

This chapter describes basic maintenance and inspection for the Inverter.

Maintenance and Inspection........................................8-2

TOE-S616-60.1.book 1 ページ２０１７年８月４日　金曜日　午後３時４１分

Main Page

Safety Information3
Safety Precautions4
Warning Information and Position8
Warranty Information9
Registered Trademarks10
Before Reading this Manual10
Table of Contents11
Handling Inverters19
Varispeed G7 Introduction20
Varispeed G7 Models20
Confirmations Upon Delivery21
Checks21
Nameplate Information21
Component Names23
Exterior and Mounting Dimensions24
Open Chassis Inverters (IP00)24
Enclosed Wall-Mounted Inverters [NEMA1 (Type 1)]25
Checking and Controlling the Installation Site27
Installation Site27
Controlling the Ambient Temperature27
Protecting the Inverter from Foreign Matter27
Installation Orientation and Space28
Removing and Attaching the Terminal Cover29
Removing the Terminal Cover29
Attaching the Terminal Cover30
Removing/Attaching the Digital Operator and31
Inverters of 15 Kw or Less31
Inverters of 18.5 Kw or more34
Removing and Attaching the Protection Cover35
Removing the Protection Cover35
Attaching the Protection Cover36
Wiring37
Connections to Peripheral Devices38
Ground Fault Interrupters, Molded-Case Circuit Breakers, and Magnetic Contactors40
Precautions When Using Peripheral Devices42
Selecting and Installing a Ground Fault Interrupter or Molded-Case Circuit Breaker42
Using a Magnetic Contactor on the Power Supply Side42
Using a Magnetic Contactor on the Motor Side42
Installing a Thermal Overload Relay42
Power Factor Improvement (Elimination of Phase-Advancing Capacitors)43
Radio Wave Interference43
Wire Thickness and Wiring Distance43
Connection Diagram44
Terminal Block Configuration46
Wiring Main Circuit Terminals47
Applicable Wire Sizes and Closed-Loop Connectors47
Main Circuit Terminal Functions54
Main Circuit Configurations55
Standard Connection Diagrams56
Wiring the Main Circuits57
Wiring Control Circuit Terminals65
Wire Sizes and Closed-Loop Connectors65
Control Circuit Terminal Functions67
Control Circuit Terminal Connections71
Control Circuit Wiring Precautions72
Wiring Check73
Checks73
Installing and Wiring Option Boards74
Option Board Models and Specifications74
Installation75
PG Speed Control Board Terminals and Specifications76
Wiring78
Wiring Terminal Blocks81
Selecting the Number of PG (Encoder) Pulses82
Digital Operator and Modes84
Digital Operator85
Digital Operator Display85
Digital Operator Keys85
Modes88
Inverter Modes88
Switching Modes89
Drive Mode90
Quick Programming Mode91
Advanced Programming Mode93
Verify Mode96
Autotuning Mode97
Trial Operation99
Overview of Trial Operation Procedure100
Trial Operation Procedures101
Setting the Power Supply Voltage Jumper (400 V Class Inverters of 55 Kw or Higher)101
Power on101
Checking the Display Status102
Setting the Control Method102
Settings for the Control Methods104
Basic Settings105
Autotuning107
Application Settings125
Load Operation125
Loaded Operation125
Check and Recording User Constants126
Adjustment Suggestions127
User Constants133
User Constant Descriptions134
Description of User Constant Tables134
Digital Operation Display Functions and Levels135
User Constants Settable in Quick Programming Mode136
User Constant Tables141
A: Setup Settings141
B: Application Constants143
C: Autotuning Constants154
D: Reference Constants160
E: Motor Constant Constants166
F: Option Constants172
H: Terminal Function Constants179
L: Protection Function Constants191
N: Special Adjustments202
O: Digital Operator Constants206
T: Motor Autotuning210
U: Monitor Constants211
Factory Settings that Change with the Control Method (A1-02)222
Factory Settings that Change with the Inverter Capacity (O2-04)225
Carrier Frequency Constant Settings that Change with the Inverter Capacity (O2-04) and Control Method (A1-02) (Applicable for PRG 1042 and Later)229
Constant Settings by Function234
Frequency Reference235
Selecting the Frequency Reference Source235
Using Multi-Step Speed Operation238
Varispeed G7 Function Block241
Run Command243
Selecting the Run Command Source243
Stopping Methods245
Selecting the Stopping Method When a Stop Command Is Sent245
Using the DC Injection Brake249
Using an Emergency Stop250
Acceleration and Deceleration Characteristics251
Setting Acceleration and Deceleration Times251
Accelerating and Decelerating Heavy Loads (Dwell Function)255
Preventing the Motor from Stalling During Acceleration (Stall Prevention During Acceleration Function)256
Preventing Overvoltage During Deceleration (Stall Prevention During Deceleration Function)258
Preventing Overvoltage by Automatically Reducing the Regenerative Torque Limit (Overvoltage Inhibit Function, PRG 102 Only)259
Adjusting Frequency References261
Adjusting Analog Frequency References261
Operation Avoiding Resonance (Jump Frequency Function)264
Adjusting Frequency Reference Using Pulse Train Inputs266
Speed Limit (Frequency Reference Limit Function)267
Improved Operating Efficiency269
Reducing Motor Speed Fluctuation (Slip Compensation Function)269
Compensating for Insufficient Torque at Startup and Low-Speed Operation (Torque Compensation)271
Starting Torque Compensation273
Hunting-Prevention Function274
Stabilizing Speed (Speed Feedback Detection Function)275
Machine Protection276
Reducing Noise and Leakage Current276
Limiting Motor Torque (Torque Limit Function)280
Preventing Motor Stalling During Operation283
Changing Stall Prevention Level During Operation Using an Analog Input284
Using Frequency Detection: L4-01 to L4-05284
Detecting Motor Torque287
Changing Overtorque and Undertorque Detection Levels Using an Analog Input290
Motor Overload Protection291
Setting Motor Protection Operation Time293
Motor Overheating Protection Using PTC Thermistor Inputs294
Limiting Motor Rotation Direction296
Continuing Operation297
Restarting Automatically after Power Is Restored297
Speed Search298
Continuing Operation at Constant Speed When Frequency Reference Is Lost305
Restarting Operation after Transient Fault (Auto Restart Function)306
Operation Selection after Cooling Fan Fault307
Inverter Protection308
Input Terminal Functions310
Temporarily Switching Operation between Digital Operator and Control Circuit Terminals310
Blocking Inverter Outputs (Baseblock Commands)311
Stopping Acceleration and Deceleration (Acceleration/Deceleration Ramp Hold)312
Raising and Lowering Frequency References Using Contact Signals (UP/DOWN)313
Accelerating and Decelerating Constant Frequencies in the Analog References (+/- Speed)316
Hold Analog Frequency Using User-Set Timing317
Switching Operations between a Communications Option Board and Control Circuit Terminals317
Jog Frequency Operation Without Forward and Reverse Commands (FJOG/RJOG)318
Stopping the Inverter by Notifying Programming Device Errors to the Inverter (External Fault Function)319
Output Terminal Functions320
Monitor Constants322
Using the Analog Monitor Constants322
Using Pulse Train Monitor Contents324
Individual Functions326
Using MEMOBUS Communications326
Using the Timer Function340
Using PID Control341
Energy-Saving350
Setting Motor Constants352
Setting the V/F Pattern355
Torque Control362
Speed Control (ASR) Structure371
Increasing the Speed Reference Response (Feed Forward Control)377
Droop Control Function378
Zero-Servo Function380
Digital Operator Functions383
Setting Digital Operator Functions383
Copying Constants386
Prohibiting Writing Constants from the Digital Operator391
Setting a Password391
Displaying User-Set Constants Only392
Options393
Performing Speed Control with PG393
Using Digital Output Boards397
Using an Analog Reference Board399
Using a Digital Reference Board400
Using Inverters for Elevating Machines405
Brake ON/OFF Sequence405
Using Inverters for Elevating Machines406
Stall Prevention During Deceleration407
Autotuning407
Braking Resistor Overheating Protection407
Momentary Power Loss Restart407
Torque Limit407
I/O Open-Phase Protection and Overtorque Detection408
External Baseblock Signal408
Acceleration/Deceleration Time408
Magnetic Contactor on the Inverter's Output-Side408
Control-Related Adjustments409
Reducing Shock During Elevating Machine Start, Stop, Acceleration, and Deceleration411
Confirming Startup Current and Reducing Carrier Frequency414
Overvoltage Inhibit Function415
Current Alarm Function416
Peak Hold Current Monitoring Function417
Maintenance Timer Display Function418
Settings Required to Use Maintenance Timer Display Function418
Settings Required after Replacement of Cooling Fan or Circuit Board419
Troubleshooting420
Protective and Diagnostic Functions421
Fault Detection421
Alarm Detection435
Operation Errors440
Errors During Autotuning442
Errors When Using the Digital Operator Copy Function443
Troubleshooting445
If Constant Constants Cannot be Set445
If the Motor Does Not Operate446
If the Direction of the Motor Rotation Is Reversed449
If the Motor Does Not Put out Torque or if Acceleration Is Slow449
If the Motor Operates Higher than the Reference449
If the Slip Compensation Function Has Low Speed Precision450
If There Is Low Speed Control Accuracy at High-Speed Rotation in Open-Loop Vector Control Method450
If Motor Deceleration Is Slow450
If the Motor Overheats451
If There Is Noise When the Inverter Is Started or from an am Radio452
If the Ground Fault Interrupter Operates When the Inverter Is Run452
If There Is Mechanical Oscillation452
If the Torque Generated for the Motor Is Insufficient (Insufficient Power)454
Large Compared to that at Medium and High Speeds454
If Shock Occurs Near the Speed Estimator Switching Frequency in Open-Loop Vector 2 Control (PRG 102 Only)454
If Torque Ripple Occurs at very Low Speeds in Open-Loop Vector 2 Control (PRG 102 Only)455
If the Motor Rotates Even When Inverter Output Is Stopped455
If OV Is Detected When the Fan Is Started, or Fan Stalls455
If Output Frequency Does Not Rise to Frequency Reference455
Acoustic Noise from the Motor456
If Motor Overload (OL1) Is Detected Even Though the Current Is below the Motor Rated Current456
Maintenance and Inspection457
Maintenance and Inspection458
Outline of Warranty458
Daily Inspection458
Periodic Inspection458
Storage Guidelines459
Periodic Maintenance of Parts460
Procedure for Adjusting Constants after Replacement of Control Board460
Types and Number of Cooling Fans Used in the Drive463
Cooling Fan Replacement Outline464
Circulation Fan Replacement Outline474
Removing and Mounting the Control Circuit Terminal Board480
Specifications481
Standard Inverter Specifications482
Specifications by Model482
Common Specifications484
Specifications of Options and Peripheral Devices486
Appendix489
Varispeed G7 Control Methods490
Control Methods and Features490
Control Methods and Applications492
Inverter Application Precautions494
Selection494
Installation495
Settings495
Handling496
Motor Application Precautions497
Using the Inverter for an Existing Standard Motor497
Using the Inverter for Special Motors498
Power Transmission Mechanism (Speed Reducers, Belts, and Chains)498
Conformance to UL Standard499
Conformance to CE Markings501
CE Markings501
Requirements for Conformance to CE Markings501
Precautions for Korean Radio Waves Act508
한국 전파법에 관한 주의사항509
China Rohs Compliance510
Information on Hazardous Substances in this Product510
对应中国 Rohs 指令511
本产品中含有有害物质的信息511
Wiring Examples512
Using a Braking Resistor Unit512
Using a Braking Unit and Braking Resistor Unit513
Using Braking Units in Parallel514
Using a Braking Unit and Three Braking Resistor Units in Parallel515
Using a VS Operator516
Using Transistors for Input Signals and a 0-V Common in Sinking Mode with an Internal Power Supply517
Using Transistors for Input Signals and a +24-V Common in Sourcing Mode518
Using Transistors for Input Signals and a 0-V Common in Sinking Mode with an External Power Supply519
Using Contact and Open Collector Outputs520
User Constants521
Control Block Diagrams530
Control Block Diagrams for Control Methods530
Troubleshooting Record Sheet533
Revision History537

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