CLASS 320 METER
62-0397-02 2
TABLE OF CONTENTS
Section 1.0 Introduction 3
Section 2.0 Internal Electronic Assemblies 5
Section 2.1 Main Power Board 5
Section 2.2 Display Board 6
Section 3.0 Meter Technical Specifications 7
Section 4.0 Safety Label Definitions and Information 10
Section 5.0 Precautionary and Safety Information 11
Section 6.0 Meter Installation 12
Section 6.1 Mounting the Class 320 Meter 12
Section 6.2 Main Power Board Connections 12
Section 6.3 Phasing of Line Voltage 16
Section 6.4 Current Sensor Installation & Wiring 17
Section 6.5 Main Power & Current Sensor Wiring Diagram 19
Section 6.6 Line Voltage/Current Sensor Diagnostics 20
Section 6.7 RS-485 Wiring 21
Section 6.8 RS-232 Communications 24
Section 6.9 Modem Wiring 26
Section 6.10 Modbus RTU Wiring 29
Section 6.11 BACnet MS/TP Wiring 30
Section 6.12 Connecting Class 320 Meters to USB Key using RS485 30
Section 6.13 Ethernet Communications 31
Section 7.0 Multiple-Load Monitoring 32
Section 8.0 Preventative/Scheduled Maintenance 33
Section 9.0 Lithium Battery Replacement 34
Section 10.0 Class 320 Meter Operating Modes 36
Section 10.1 Start Up Screens 36
Section 10.2 Normal Mode Display Screens 37
Section 10.3 How to Program the Display Screens 38
Section 11.0 High Voltage Metering 43
Section 12.0 Class 320 Protocol Definitions 46
Section 13.0 Meter Limited Warranty 53
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