MPA3 V6.3 MOTOR PROTECTION RELAY MANUAL
Issue: R0, Date: 11/2010, CRN: 8168
MPAB010 Rev0
MPA3 V6.2 Motor Protection Relay Manual
Page 25
20
Advanced Display Operation
The MPA display is structured to allow experienced users quicker access to information. This is achieved by the use
of the '
ENT
' and '
ESC
' keys to move quickly around the display structure.
Operating the
ENT
key causes the current display position to be 'remembered', and then a jump occurs to a new
display position. The
ESC
key reverses this (or jumps back to the top left position).
If the
ENT
key is pressed while the display is on a position where there is information related to relay settings then
the display will jump to the related 'MPA Settings' Page. For example, if the display is showing the 3 phase currents
(Level 1, Position 1 on the display), then pressing the
ENT
key will cause the display to jump to the position where
the full load current level is selected. The current level can then be adjusted (or just reviewed). Once this is done
pressing the
ESC
key will return the display to the original display position. In this way the
ENT
and
ESC
keys can
be used to toggle back and forth between the two displays. Note that the display can be moved
left
or
right
on the
setup level to change a parameter. Once the parameter has been changed the operation of the
ESC
key will still
return to the original display. Pressing the
ENT
key again will cause a jump back to the new position on the setup
level.
Pressing the
ESC
key when there has been no return position recorded will return the display to the top left 'Motor
Status' Page. Pressing the
ENT
key after 'escaping' to the top will cause the display to return to the previous
position.
If the
ENT
key was pressed on the default 'Motor Status' Page when there has been no return position 'remembered',
the display will jump down to the settings level.
To allow rapid movement through the displays when viewing/adjusting the settings, holding the
left
or
right
arrow
keys for > 0.5 Sec will cause faster incrementing through the values.
21
Time & Date
The MPA real time clock/calendar can be adjusted by carrying out the following procedure:
1)
Select the ‘Date and Time Information’ Page, Level 6, Position 1 to display the Day, Month, Year, Hours
and Minutes. Press the right arrow to display:
2)
Press the ENT key. A ‘v’ will appear in the top line above the minute section. This indicates the number
to be changed.
3)
Use the left and right arrow keys to move the ‘v’ to the desired Position.
4)
Press the
ENT
key. The ‘v’ now changes to a ‘?’ The right arrow key is used to increment the allowable
values, once the desired value is obtained, press the
ENT
key again. The ‘?’ returns to a ‘v’.
5)
Repeat steps 3 and 4 until the correct time and date are displayed.
6)
With the ‘v’ showing press the reset button. The ‘v’ then changes to ‘E’. (This is a prompt to press the
ENT
key).
7)
Press the
ENT
key. At that instant, the seconds are zeroed and the selected time/date information is
transferred to the internal clock.
If the battery voltage is low the time will zero and the date will reset to 1st January on power up.
The date and time is used only to time stamp the events in the log (which are recorded
sequentially regardless of the date/time). The time function also allows the thermal model to
continue to simulate the motors thermal behaviour when the power is removed from the relay.
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Mo 150500 09:46
