Contents
I. Brief Introduction to Product ............................................................................1
1.1 Quoted Standards ...........................................................................................1
1.2 Product Overview............................................................................................1
II. Technical Parameters .......................................................................................2
III. Installation and Wiring....................................................................................3
3.1 Instrument Dimensions...................................................................................3
3.2 Installation Mode ............................................................................................4
3.3 Functions Description of Wiring Terminal.......................................................5
3.4 Connection of Input Signal Line ......................................................................6
IV. Menu Display and Programming .....................................................................7
4.1 Panel Description and Using............................................................................7
4.2 Menu Introduction and Operation..................................................................8
4.2.1 Display of Electric Quantity......................................................................8
4.2.2 Display of Electric Energy .......................................................................12
4.2.3 THD Display ............................................................................................13
4.2.4 Setting of Menu Structure......................................................................16
4.3 Operation Method of Programming..............................................................20
4.3.1 System Setting ....................................................................................21
4.3.2 Signal Input Setting ................................................................................22
4.3.3 Communication Settings ........................................................................23
4.3.4 Relay Output Setting ..............................................................................24
4.3.5 Analog Output Settings ..........................................................................25
V. Functional Module.........................................................................................26
5.1 Communication.............................................................................................26
5.1.1 Physical Layer .........................................................................................26
5.1.2 Communication Protocol MODBUS-RTU................................................26
5.1.3 Message Format Instructions.................................................................27
5.2 Pulse Output of Electric Energy.....................................................................31
5.3 Digital Input...................................................................................................32
5.4 Relay Output..................................................................................................32
5.5 Analog Output...............................................................................................33
VI. Common Problems and Solutions .................................................................35
6.1 Communication.............................................................................................35
6.2 Inaccuracy of Current UIP Measurement ......................................................35
6.3 Inaccuracy of Electric Quantity Cyclometer ..................................................36
6.4 Instrument Failure.........................................................................................36
6.5 Instrument Not Responding to Any Operation..............................................36
6.6 Other Abnormal Situations ...........................................................................36
Attachment 1 Table of MODBUS-RTU Communication Address Information......37
Address of 0x03/0x04 Command Data Register:..................................................37
Harmonic data.....................................................................................................39
