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I. Safety precautions······················································································································································ 1
I I. Introduction······························································································································································· 7
1. Read first····························································································································································· A-1
1.1 Check the product········································································································································ A-1
1.2 Contents of the product code······················································································································· A-1
1.3 The product classes for input voltage··········································································································· A-2
1.4 Structure of the main body··························································································································· A-4
1.4.1 Names and functions···························································································································· A-4
1.4.2 Detaching the cover······························································································································ A-9
1.4.3 Grounding capacitor switching method································································································· A-12
1.4.4 Installing the transformers on VFAS1···································································································· A-14
1.5 Notes on the application······························································································································· A-19
1.5.1 Motors··················································································································································· A-19
1.5.2 Inverters················································································································································ A-21
1.5.3 What to do about the leak current········································································································· A-22
1.5.4 Installation············································································································································· A-24
2. Connection equipment ········································································································································ B-1
2.1 Cautions on wiring········································································································································ B-1
2.2 Standard connections··································································································································· B-3
2.3 Description of terminals································································································································ B-10
2.3.1 Main circuit terminals···························································································································· B-10
2.3.2 Control circuit terminal block················································································································· B-11
2.3.3 Serial RS485 communication connector······························································································· B-16
3. Operations··························································································································································· C-1
3.1 Setting/monitor modes································································································································· C-2
3.2 Simplified operation of the VF-AS1·············································································································· C-3
3.2.1 Terminal board operation······················································································································ C-3
3.2.2 Panel operation····································································································································· C-7
4. Searching and setting parameters······················································································································· D-1
4.1 How to set parameters································································································································· D-2
4.1.1 Setting parameters in the selected quick mode ···················································································· D-2
4.1.2 Setting parameters in the standard setting mode·················································································· D-3
4.2 Functions useful in searching for a parameter or changing a parameter setting·········································· D-4
5. Basic parameters················································································································································ E-1
5.1 History function············································································································································ E-1
5.2 Setting acceleration/deceleration time ········································································································· E-2
5.2.1 Automatic acceleration/deceleration····································································································· E-2
5.2.2 Manually setting acceleration/deceleration time··················································································· E-3
5.3 Increasing starting torque····························································································································· E-3
5.4 Setting parameters by operating method····································································································· E-5
5.5 Selection of operation mode ························································································································ E-6
5.6 Selecting control mode································································································································· E-11
5.7 Manual torque boost–increasing torque boost at low speeds······································································ E-16
5.8 Base frequency············································································································································ E-16
5.9 Maximum frequency····································································································································· E-17
5.10 Upper limit and lower limit frequencies········································································································· E-17
5.11 Setting frequency command characteristics································································································· E-18
5.12 Preset speed operation (speeds in 15 steps)）··························································································· E-18
5.13 Selecting forward and reverse runs (operation panel only)·········································································· E-21
5.14 Setting the electronic thermal······················································································································· E-22
5.15 Changing the display unit % to A (ampere)/V (volt)······················································································ E-26