Siemens MJ-XL Installation And Operation Manual page 10

2
Using the MJ-XL Operator Panel and Controls
Time Delay Key
Time
Delay
The Time Delay setpoint defines the amount of time you
want the controller to wait (after regulator output voltage
has fallen outside the Bandwidth limit) before activating
the tap changer motor. Use this key to view the Time
Delay setpoint. Once you display the Time Delay, press
the Change key to modify the value.
Line Drop Compensation Fast-Path Keys
Line Drop Compensation (LDC) defines your estimate of
the voltage drop between the regulator and the load cen-
L
ter. The MJ-X control program adjusts regulator output
voltage to compensate for this drop. Specify both Resis-
tive and Reactive components of Line Drop Compensa-
tion. See Appendix D for instructions about calculating the
line drops.
Resistance Key
Resis-
tance
Press this key to view the Resistive LDC component.
Once you display the Resistive LDC, press the Change
key to modify the value.
Reactance Key
Reac-
tance
Press this key to view the Reactive LDC component.
Once you display the Reactive LDC, press the Change key
to modify the value.
+/- Polarity Select Key
While in the Change mode, press this key to define the
polarity of either the Resistive or Reactive LDC compo-
nent.
Other Fast-Path Keys
Alert Status Key
Alert
Status
6
Press this key to view the contents of the <ALERTS>
Menu. If any Alerts are active, press this key repeatedly to
step through the Alerts in order of priority. If no Alerts are
active, the message "No Alerts Active" will be displayed.
Section 5.6 contains additional information on how to
determine the meaning of the various Alerts, and how to
acknowledge them.
Press the Cancel/Reset Key to acknowledge the alerts.
Voltage Reduction Control (VRC) Key
VRC
Select
Press this key to view the Voltage Reduction Control data
items. The first data item in that function is VRC status.
Press this key repeatedly to step through the VRC set-
tings (Local % reduction, Stage 1-3, VRC Remote, etc.)
and then return to VRC Mode and repeat the sequence.
See Section 4.4.3 for a discussion of these data items.
Voltage Limit Control (VLC) Key
VLC
Select
Press this key to view the VLC Enable data items. Press
the VLC key repeatedly to step through the VLC - Upper
Voltage setpoint, and the VLC - Lower Voltage setpoint
and then repeat the sequence. See Section 4.4.4 for a dis-
cussion of these data items.
Operation Counter (Op Count) Key
Op
Count
Press this key to select the <COUNTERS> Menu. The
first parameter displayed is the Total Operations count.
Press this key repeatedly
<COUNTERS> Menu data items. See Section 5.7 for a
discussion of this Menu.
Voltage Calibration/Test (U2 P2) Key
U2
P2
Press the U2/P2 key to toggle the output voltage between
the "U2Cal" and the P2 Cal" values. Concurrently, the dis-
play shows the corresponding metered value (U2 Cal or
P2 Cal). Refer to Section 8.4 for calibration instructions.
Note: The MJ-X required the operator to use the U2/
P2 slide switch on side of the panel to change
the voltage coming to the front-panel test ter-
Siemens Power Transmission & Distribution, Inc.
to step through the