Contents 1.1 Working principle block diagram of single module ................................................................. 4 1.2 Working principle ..................................................................................................................... 4 1.3 Function introduction ................................................................................................................ 4 1.4 Appearance structure ................................................................................................................ 6 1.5 Schematic diagram of front panel and terminal block ..............................................................
7 1.6 Front panel operating instructions ............................................................................................ 7 1.7 RS485 Description of communication and dry contact ............................................................ 8 2 Main product specifications ............................................................................................................. 8 3 Referenced standards and specifications ......................................................................................... 9 4 Environmental conditions ..............................................................................................................
10 5 Reliability test ................................................................................................................................ 10 1 Basic principle and structure ................................................................................................ 4 5.1 Safety requirements ................................................................................................................ 10 5.2 EMCrequirement..................................................................................................................... 1 1 5.3High temperature and low temperature test (including storage and working test) ..................
11 6 Electrical characteristics ................................................................................................................ 11 7 Display part .................................................................................................................................... 13 8 Common faults ............................................................................................................................... 14 9 Installation......................................................................................................................................
15 9.1 Installation precautions ........................................................................................................... 15 9.2 Site environmental requirements ............................................................................................ 15 9.3 Unpacking ............................................................................................................................... 16 9.4 Check the power supply .......................................................................................................... 16 9.5 Brief description of host installation .......................................................................................
17 9.6 Electrical connection ............................................................................................................... 17 9.7 System inspection ................................................................................................................... 19 9.8 Connected load........................................................................................................................ 19 10 Use ...............................................................................................................................................
20 10.1 Precautions for use ................................................................................................................ 20 10.2 Preparation before startup ..................................................................................................... 20 10.3 operation ............................................................................................................................... 20 11 Maintenance guide .......................................................................................................................
21 11.1 Maintenance guide ................................................................................................................ 21 11.2 Safety precautions ................................................................................................................. 21 11.3 Preventive and periodic maintenance ................................................................................... 22 11.4 Maintenance steps ................................................................................................................. 22 11.5 Diagnosis of common abnormal problems ...........................................................................
22 12 Packaging ， transportation and storage ....................................................................................... 23 12.1 Packaging .............................................................................................................................. 23 12.2 Transportation ....................................................................................................................... 23 12.3 Storage .................................................................................................................................. 23 3