YASKAWA VS MINI J7 User Manual Page 37
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23
Wiring Chapter 2-2
Ground Wiring
• Always use the ground terminal with the following ground resistance:
200-V Inverter: 100 W or less
400-V Inverter: separate ground,10 W or less
• Do not share the ground wire with other devices such as welding
machines or power tools.
• Always use a ground wire that complies with technical standards on
electrical equipment and minimize the length of the ground wire.
Leakage current flows through the Inverter. Therefore, if the distance
between the ground electrode and the ground terminal is too long, the
potential on the ground terminal of the Inverter will become unstable.
• When using more than one Inverter, be careful not to loop the ground
wire.
- 1
- 1
- Visual Aids 3
- General Precautions 4
- Wiring Precautions 5
- Transportation Precautions 5
- Installation Precautions 5
- Warning Labels 7
- CIMR—J7AZ20P1 8
- About this Manual 9
- Application Considerations 10
- Disclaimers 11
- Table of Contents 13
- CHAPTER 1 15
- Overview 15
- 1-1 Function 16
- 1-2 Nomenclature 17
- Nomenclature Chapter 1-2 18
- Digital Operator 18
- CHAPTER 2 19
- 2-1 Installation 20
- Installation Chapter 2-1 21
- 2-2 Wiring 24
- Wiring Chapter 2-2 25
- Removing the Front Cover 25
- 2-2-2 Terminal Block 26
- Main Circuit Terminals 27
- Control Circuit Terminals 28
- Selecting Input Method 28
- 2-2-3 Standard Connections 30
- Circuit Breaker Capacities 31
- Wiring Example 1 34
- Ground Wiring 37
- Harmonics 38
- Standard Connection 43
- LVD Conformance 45
- CHAPTER 3 47
- 3-1 Nomenclature 48
- 3-2 Outline of Operation 49
- Status Monitor 51
- Example of Paramter Settings 53
- CHAPTER 4 55
- Test Run 55
- Chapter 4 56
- 4-1 Procedure for Test Run 57
- 4-2 Operation Example 59
- 4-2-3 Initializing Parameters 60
- 4-2-5 No-load Operation 61
- 4-2-6 Actual Load Operation 62
- CHAPTER 5 63
- Basic Operation 63
- 5-1 Initial Settings 64
- 5-2 V/f Control 65
- V/f Control Chapter 5-2 66
- Basic Conecpt 67
- 5-9 Multi-function I/0 77
- Set Values 78
- Forward (reverse) 80
- RUN command 80
- 5-9-2 Multi-function Output 81
- 5-10 Analog Monitor Output 82
- CHAPTER 6 83
- Advanced Operation 83
- 6-3 Stall Prevention Function 87
- 6-7 Other Functions 93
- 6-7-4 Fault Retry (n48) 95
- Frequency Detection 97
- Other Functions Chapter 6-7 100
- 6-7-8 Error History (n78) 101
- CHAPTER 7 103
- Communications 103
- 7-1-1 Overview 104
- 7-1-2 External Dimensions 104
- 7-1-3 Names of Parts 105
- 7-1-4 Mouting Procedure 105
- Connector 106
- 7-2 Inverter Settings 107
- Inverter Settings Chapter 7-2 108
- Slave Address (n70) 108
- Send Wait Time Setting (n73) 109
- RTS Control Selection (n74) 109
- Communications Format 112
- Message Interval 112
- Message Data Configuration 112
- Slave Address 113
- Function Code 113
- Communications Data 113
- Error Check 114
- 7-4 DSR Message and Response 115
- Response 116
- Example of Data Read 116
- Settings and Response 117
- Example of Loop-back Test 121
- 7-5 Enter Command 122
- Converting the Register Data 123
- Bit reversed 124
- 1 is added 124
- 7-7-1 I/O Function 125
- 7-7-2 Monitor Functions 126
- Errors and Remedies 129
- 7-9 Self-diagnostic Test 130
- CHAPTER 8 131
- Fault Displays and Processing 132
- 8-2 Troubleshooting 137
- 8-2-6 Motor Burns 139
- 8-2-9 Mechanical Vibration 140
- 8-2-13 Inverter Does Not Run 141
- Daily Inspection 142
- Periodic Inspection 142
- Periodic Maintenance Parts 143
- Replacement of Cooling Fan 143
- CHAPTER 9 145
- Specifications 145
- 9-1 Inverter Specifications 146
- 9-2-1 List of Accessories 149
- 9-2-2 Adapter Panel 150
- 9-2-4 Fan Unit 151
- 9-2-5 Digital Operator 152
- 9-2-6 Digital Operator Case 153
- 9-2-8 DC Reactor 153
- 3G3IV-PEZZ08122_ 154
- Applicable Model 154
- External Dimensions (mm) 154
- 9-2-10 AC Reactor 155
- 9-3 Option Specifications 156
- External Dimensions 157
- CHAPTER 10 159
- List of Parameters 159
- List of Parameters Chapter 10 160
- CHAPTER 11 173
- Revision History 176
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