Siemens MJ-XL Installation And Operation Manual page 9

To change an item:
1. View the item using either the menu selection keys
or the fast-path keys.
2. Press the Change key. The displayed data item
flashes to indicate that it can be changed.
3. Use the Scroll keys to make the desired change.
Save Key
Save
After using the Change key and the Scroll keys to modify
a data item, press the Save key to record the change and
exit the Change mode. The displayed data item will stop
flashing.
Special Use: While viewing any max/min screen, press
Save to view the Time/Date stamp for the max/min item.
Cancel/Reset Key
Cancel
Reset
The function of this key depends upon the function cur-
rently being performed:
• If the microprocessor is in Change mode, press the
Cancel/Reset key to exit the Change mode and can-
cel any changes. (The data item will revert to its previ-
ous setting.)
• If you are viewing a max or min value, press the Can-
cel/Reset key to reset the item to the present meter
value.
• If you are viewing Tapmax/Tapmin data items, press
the Cancel/Reset key to reset them to the current tap
position. (See Section 5.7, <COUNTERS> Menu.)
• If you are viewing an ALERT, press the Cancel/Reset
key to acknowledge the Alert. (SeeSection 5.8,
<ALERTS> Menu.)
Max/Min Key
Max
Min
Use this key to view max/min values for meter parame-
ters. First view the desired data item, then press the Max/
Min key to view the maximum value. Press the Max/Min
key again to see the minimum value, Press the Max/Min
key a third time to exit the Max/Min mode without reset-
ting the values.
Siemens Power Transmission & Distribution, Inc.
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Using the MJ-XL Operator Panel and Controls
Max/Min data items are displayed for a short period of
time, after which the display returns to the current value.
The length of this period can be selected by the operator.
(See Section 4.3.20, Min/Max Time Out.)
For example, if you wish to see the minimum load voltage
since the last reset, use the Menu Selection keys to
select Vld from the Meter Menu. The current voltage
value is displayed on the screen. Press the Max/Min key.
The maximum value will display for a short time. Press the
Max/Min key again to view the minimum value.
To clear max/min values, see Cancel/Reset Key descrip-
tion.
To display max/min Time/Date stamp, see the Save key
Special Use description.
2.3.2
Fast-path keys are shortcuts that provide direct access to
frequently used data items. Once you have selected a
data item with a fast-path key, use the Change, Scroll, and
Save keys to view and change the data item just as you
would do with the menu selection keys.
Many of the data items selected by the fast-path keys
have both forward and reverse values. For example, if you
press the fast-path key labeled "Voltage Level", the data
item "Fwd Volts" appears on the display screen. Press
the key again to view the reverse value. "Rev Volts" is
displayed. Press the key repeatedly to alternate the dis-
play between forward and reverse values.
Regulation Setting Fast-Path Keys:
Voltage Level Key
Voltage
The Voltage Level setpoint defines the output voltage you
want the regulator to maintain. Use this key to view the
Voltage Level setpoint. Once you display the Voltage
Level, press the Change key to modify the value.
Bandwidth Key
The Bandwidth setpoint defines a voltage range (on either
side of the Voltage Level setpoint) which you consider to
be acceptable. When regulator output voltage falls outside
this value, the MJ-X
changer motor to restore the voltage to an in-band condi-
tion. Use this key to view the Bandwidth setpoint. Once
you display the Bandwidth, press the Change key to mod-
ify the value.
Fast-Path Keys
Level
Band-
width
L
Control Panel activates the tap
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