Readout Sequence - GE MLJ1000 Manual

6.1 READOUT SEQUENCE

This is the typical sequence for the MLJ as well as the power-up sequence. It is divided into a series of
"Functions", each corresponding to different types of information. These functions are numbered from
1 to 12 and are identified by the letter F followed by the number of the function.
ENT
ENTER button is released.
In this fashion, pressing and releasing the ENTER button, we can go through the entire Readout
Sequence. On the front of the relay, under the word "DISPLAY" there is a list of all of the functions.
They are listed below:
F0:
F1:
F2:
F3:
F4:
F5:
F6:
F7:
F8:
F9:
F10:
F11:
F12:
Each of these functions are covered in further detail.
GEK - 105560
In normal operation, and shortly after being connected,
the MLJ displays the state of the line and bus. The left-
hand segment represents the state of the line and the
right-hand segment, the state of the bus. If both are live,
two horizontal upper segments will light up. This is the
reading assigned to the last function, F12.
If the ENTER button is now pressed and held down, F0
will appear.
While the button is pressed, this code will remain on the
display. It tells us that we are in Function 0 of the Readout
Sequence. This function, which will appear as soon as the
button is released, indicates the Status of the relay.
If the ENTER button is pressed a second time, the
second function, F1 will appear. This function shows the
value of the line voltage, and will be seen as soon as the
STATUS
VL
VB
∆V
∆θ
∆f
LAST VL
LAST VB
LAST ∆V
LAST ∆θ
LAST ∆f
TEST
VL VB
24
State of relay
Line voltage
Bus voltage
Modulus of voltage difference
Phase angle
Frequency slip
VL in the last close enable
VB in the last close enable
∆V in the last close enable
∆θ in the last close enable
∆f in the last close enable
Display test, LEDs and inputs
State of line and bus