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Table of Contents
Cautions before using ............................................................................................................................ⅰ
Chapter 1 Unit's Features and Structure ..................................................................................................1
1.1 Unit's Name and Part Numbers ............................................................................................................... 1
1.1.1 Main unit ......................................................................................................................................... 1
1.1.2 Options ........................................................................................................................................... 1
1.2 Measurement items ................................................................................................................................. 2
Chapter 2 Parts Name and Working.........................................................................................................3
2.1 Parts Names ............................................................................................................................................ 3
2.2 Keys' Functions........................................................................................................................................ 3
Chapter 3 Wiring ......................................................................................................................................4
3.1 Main unit terminal arrangement ............................................................................................................... 4
3.2 Wiring Diagrams ...................................................................................................................................... 5
3.3 For input connection ................................................................................................................................ 9
3.4 For Output connection ............................................................................................................................. 9
3.5 RS485 Communication.......................................................................................................................... 10
3.6 Low Voltage Directive ............................................................................................................................ 11
Chapter 4 Settings..................................................................................................................................12
4.1 Operation procedure.............................................................................................................................. 12
4.2 Setting Mode Explanation...................................................................................................................... 14
4.2.1 MODE1......................................................................................................................................... 14
4.2.2 MODE2......................................................................................................................................... 21
4.2.3 MODE3......................................................................................................................................... 22
4.2.4 MODE4......................................................................................................................................... 24
Chapter 5 Various Functions ..................................................................................................................25
5.1 LOCK mode ........................................................................................................................................... 25
5.2 Display while communication................................................................................................................. 25
5.3 Display when pulse output..................................................................................................................... 25
5.3.1 Output depends on integral electric power................................................................................... 25
5.3.2 Instantaneous electric power alarm ............................................................................................. 25
5.3.3 Current alarm ............................................................................................................................... 25
5.3.4 Stand-by power alarm .................................................................................................................. 26
5.3.5 Output depends on count value ................................................................................................... 26
5.4 Counter function..................................................................................................................................... 26
5.4.1 Operation mode............................................................................................................................ 26
5.4.2 Change the Preset Value ............................................................................................................. 26
Chapter 6 Display of each Value ............................................................................................................27
6.1 Outline for the Working of Display ......................................................................................................... 27
6.1.1 Integral Electric Power ................................................................................................................. 28
6.1.2 Instantaneous Electric Power....................................................................................................... 29
6.1.3 Current.......................................................................................................................................... 29
6.1.4 Voltage ......................................................................................................................................... 30
6.1.5 Electricity Charge ......................................................................................................................... 31
6.1.6 Power factor ................................................................................................................................. 31
6.1.7 Frequency..................................................................................................................................... 32
6.1.8 Hour meter.................................................................................................................................... 32
6.1.9 Counter......................................................................................................................................... 33
Chapter 7 Communications ....................................................................................................................35
7.1 Communication Procedures .................................................................................................................. 35
7.2 Communication timing ........................................................................................................................... 35
7.3 MEWTOCOL Communication................................................................................................................ 36
7.3.1 Overview of MEWTOCOL-COM (RS485) .................................................................................... 36
7.3.2 Data Register List......................................................................................................................... 37
7.3.3 Error Codes .................................................................................................................................. 38
7.3.4 Command ..................................................................................................................................... 38
7.4 MODBUS (RTU) Communication .......................................................................................................... 40
7.4.1 Overview of MODBUS (RTU)....................................................................................................... 40
7.4.2 Data Register List......................................................................................................................... 43
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