8.7
Date Code 20080918 Instruction Manual SEL-749M Relay
Front-Panel Operations
Human-Machine Interface
Meter Menu
Select the Meter menu item on the MAIN menu to access the Fundamental and
Thermal metering data. See Metering on page 5.1 for a description of the data
available.
Events Menu
Select the Events menu from the MAIN menu to access Display Events or
Reset Events. Select Display Events to show events in order of occurrence,
starting with the most recent.
Monitor Menu
Select the Monitor menu item on the MAIN menu to access the motor operating
statistics that include
Motor Use Data, Avg/Peak Data, Trip/Alarm Data,
and
Reset Statistics. See Motor Operating Statistics on page 5.5 for a
description of the data available.
Targets Menu
Select the Targets menu item on the MAIN menu to access the target rows
(Relay Word bits). Use the following features to monitor the relay during
operation and testing.
Control Menu
The SEL-749M provides great flexibility in control through the MAIN <
Control menu. Use the front-panel CONTROL menu for the following control
actions:
Stop Motor Initiates STOP input to the Stop/Trip Logic
(see Figure 4.20)
Emergency Restrt Asserts Relay Word EMRSTR to initiate an
emergency start (see Figure 4.23)
Press the {ENT} pushbutton to display elements.
Press the {ENT} pushbutton to reset events.
EVENTS
Display Events
Reset Events
EVENTS
Display Events
Reset Events
Navigate to the target row that
contains the Relay Word bit you want to access.
Monitor two consecutive rows that
contain 16 Relay Word bits with this display.
Display the Relay Word bit names
and status of two consecutive bits by pressing
{ENT} while the cursor is at the row you want to
access. Use the {Up Arrow} or {Down Arrow} to
navigate to any of the Relay Word bits in the selected row.
Row 11=01001100
Row 12=11000100
50P1P=0
50P2P=1
Courtesy of NationalSwitchgear.com
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