CIRCUTOR CVM-MINI Series - Manual (Page 2)

Page 2 of 26
CONTENTS
1 BASIC INSTRUCTIONS............................................................................................................. 3
1.1 Checks on receipt. ....................................................................................................... 3
1.2 Main features ............................................................................................................... 3
1.3 Electrical parameters ................................................................................................... 3
1.4 Other features .............................................................................................................. 4
1.5 Available models .......................................................................................................... 4
2 INSTALLATION AND START-UP .............................................................................................. 5
2.1 Installation .................................................................................................................... 5
2.1.1 Power supply voltage............................................................................................... 5
2.1.2 Maximum voltage in the voltage measurement circuit ............................................ 5
2.1.3 Maximum permanent current in the current circuit .................................................. 5
2.1.4 Transistor output features........................................................................................ 5
2.1.5 Temperature probe features.................................................................................... 5
2.1.6 Operating conditions................................................................................................ 6
2.1.7 Safety....................................................................................................................... 6
2.2 Start-up ........................................................................................................................ 6
2.2.1 Description of terminals ........................................................................................... 6
2.2.2 Connection diagrams............................................................................................... 7
3 OPERATING MODE .................................................................................................................. 7
3.1 Keypad ......................................................................................................................... 8
3.2 Default settings ............................................................................................................ 8
3.2.1 Default display ......................................................................................................... 9
3.2.2 LED Indicators ....................................................................................................... 10
4 SETTING SET-UP.................................................................................................................... 10
4.1 Measurement Set-up ................................................................................................. 10
4.1.1 Transformation Ratios ........................................................................................... 11
4.1.1.1 Voltage primary value ................................................................................... 11
4.1.1.2 Voltage secondary value............................................................................... 11
4.1.1.3 Current primary value ................................................................................... 11
4.1.1.4 Current secondary value............................................................................... 12
4.1.2 Measurement in 2 or 4 quadrants.......................................................................... 12
4.1.3 Power demand meter parameterisation ................................................................ 13
4.1.3.1 Integrated parameter .................................................................................... 13
4.1.3.2 Integration period .......................................................................................... 13
4.1.3.3 Clearing power demand meter value ............................................................ 14
4.1.4 Display and backlight............................................................................................. 14
4.1.4.1 Selection of screens to be displayed ............................................................ 14
4.1.4.2 Selection of start page .................................................................................. 14
4.1.4.3 Backlight (Backlit display) ............................................................................. 15
4.1.5 Clearing energy meter values................................................................................ 15
4.1.6 Setting THd or d..................................................................................................... 15
4.1.7 Digital output for the transistor (2) ......................................................................... 15
4.1.7.1 Impulse per n KW·h or Kvar·h consumed or generated ............................... 16
4.1.7.2 Alarm condition ............................................................................................. 16
4.2 Communication Set-up .............................................................................................. 19
4.2.1 Default settings ...................................................................................................... 19
4.2.2 Peripheral number ................................................................................................. 20
4.2.3 Transmission speed............................................................................................... 20
4.2.4 Parity...................................................................................................................... 20
4.2.5 Data bits................................................................................................................. 21
4.2.6 Protection of data Set-up using password............................................................. 21
5 APPENDIX – CVM-MINI-ITF-HAR-RS485-C2 SERIES .......................................................... 22
6 MODBUS RTU PROTOCOL .................................................................................................... 22
6.1 MODBUS memory map ............................................................................................. 23
6.2 RS485 Connection diagram....................................................................................... 26
7 TECHNICAL SERVICE ............................................................................................................ 26