INVT Goodrive20-EU VFD Series Operation Manual page 3

Goodrive20-EU series VFD
3.4.3 Implementing a bypass connection .................................................................... 25
4 Keypad operation procedure ............................................................................................ 26
4.1 Keypad introduction ..................................................................................................... 26
4.2 Keypad displaying ....................................................................................................... 29
4.2.1 Displayed state of stopping parameter ............................................................... 29
4.2.2 Displayed state of running parameters ............................................................... 29
4.2.3 Displayed state of fault ....................................................................................... 29
4.2.4 Displayed state of function codes editing ........................................................... 30
4.3 Keypad operation ........................................................................................................ 30
4.3.1 How to modify the function codes of the VFD .................................................... 30
4.3.2 How to set the password of the VFD .................................................................. 31
4.3.3 How to watch the VFD state through function codes .......................................... 31
5 Function parameters .......................................................................................................... 32
6 Fault tracking .................................................................................................................... 101
6.1 Maintenance intervals ................................................................................................ 101
6.1.1 Cooling fan ........................................................................................................ 103
6.1.2 Capacitors ......................................................................................................... 105
6.1.3 Power cable ...................................................................................................... 105
6.2 Fault solution ............................................................................................................. 106
6.2.1 Alarm and fault indications ................................................................................ 106
6.2.2 How to reset ...................................................................................................... 106
6.2.3 Fault instruction and solution ............................................................................ 106
6.2.4 Other states ...................................................................................................... 112
7 Communication protocol ................................................................................................. 113
7.1 Brief instruction to Modbus protocol .......................................................................... 113
7.2 Application of the VFD ............................................................................................... 113
7.2.1 Two-wire RS485................................................................................................ 113
7.2.2 RTU mode ......................................................................................................... 116
7.2.3 ASCII mode ....................................................................................................... 119
7.3 Command code and communication data illustration ................................................ 120
7.3.1 RTU mode ......................................................................................................... 120
7.3.2 ASCII mode ....................................................................................................... 124
7.4 Definition of data address .......................................................................................... 127
7.4.1 Rules of parameter address of the function codes ........................................... 128
7.4.2 Address instruction of other function in Modbus ............................................... 128
7.4.3 Fieldbus ratio values ......................................................................................... 132
7.4.4 Fault message response .................................................................................. 133
7.5 Example of writing and reading ................................................................................. 134
7.5.1 Example of reading command 03H .................................................................. 135
7.5.2 Example of writing command 06H .................................................................... 135
7.5.3 Example of continuous writing command 10H ................................................. 137
7.6 Common communication fault ................................................................................... 139
Appendix A Technical data ................................................................................................. 140
A.1 Ratings ...................................................................................................................... 140
A.1.1 Capacity............................................................................................................ 140
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Contents