B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 7-1
B90 Low Impedance Bus Differential System
Chapter 7: Commands and targets
Commands and targe ts
This chapter outlines the Commands and Targets menus and self-tests/error messages. Commands related to the IEC 
61850 protocol are outlined in the IEC 61850 section of the Settings chapter. Log/error messages for IEC 61850 are 
outlined in the UR Family Communications Guide.
7.1  Commands menu
The commands menu contains relay directives intended for operations personnel. All commands can be protected from 
unauthorized access via the command password; see the Security section of chapter 5 for details. The following flash 
message appears after successfully command entry.
COMMANDS
 COMMANDS
 VIRTUAL INPUTS
 COMMANDS
 CLEAR RECORDS
 COMMANDS
  SET DATE AND TIME
 COMMANDS
 RELAY MAINTENANCE
 COMMANDS
 SECURITY
COMMAND
EXECUTED