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Interfacing with the Relay
Figure 5-1. MMI Access Panel
From the default screen, you can use the <C> key to:
If there are no targets
•
Hit <C> once within a 5-second window:
Prompts the user to reset alarms. Hit <C> within 5 seconds to reset alarms. The user will then
be prompted to reset seal-ins. Hit <C> within 5 seconds to reset seal-ins.
•
Hit <C> two times within a 5-second window:
Automatically scrolls through demand values.
•
Hit <C> three times within a 5-second window:
Prompts the user to reset Min/Max Demands. Hit <C> within 5 seconds to reset Min/Max
Demands.
If there are targets
•
Hitting <C> once will prompt the user to clear fault data.
•
If <C> is hit again within 5 seconds, fault data will be cleared from the MMI and the user will be
prompted to clear target data.
•
If <C> is hit again within 5 seconds, targets are cleared and the user will be prompted to clear
sealed-in outputs.
•
If <C> is hit again, sealed-in outputs will be cleared.
You can do a system reset by simultaneously pressing the <C>, <E> and up-arrow keys. A "System Reset" resets
the microprocessor and re-initiates the software program. During a system reset, no stored information or settings
are lost. The following displays and menus are available through the MMI:
•
Continuous Displays-- shows currents, voltages and which settings table is enabled
•
Post-Fault Display-- shows distance to fault in miles (km) and fault currents for last fault until
targets are reset
•
Reclosing Display-- shows open interval or reset time counting down to zero
Interfacing with the Relay
Man-Machine Interface (MMI)
The man-machine interface (MMI) on the front panel consists of an auto
temperature compensating graphics LCD, six push-buttons (keys) and
twelve LED targets. Press the Enter <E> key to access the Main Menu.
Use the < − and − > arrow keys to move through the various menus and to
change the character value when you enter the alphanumeric password.
C
Use the Enter <E> key to select the desired menu or desired value when
you change settings.
E
Use the < − and − > arrow keys to decrease and increase, respectively,
setting values or record numbers. Also use them to move from left to right
within the password string. If you hold down the right or left arrow key, the
setting value slowly changes. If you press the arrow keys repeatedly, the
value changes more rapidly.
website:www.abb.com/papd
ABB Distribution Protection Unit 1500R
5-1
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