GE 745 TRANSFORMER MANAGEMENT RELAY, Инструкция по эксплуатации

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GE Power Management 745 Transformer Management Relay 4-5
4 FRONT PANEL OPERATION 4.3 KEYPAD
4
4.3 KEYPAD 4.3.1 SETPOINT KEY
Setpoints are arranged into groups of related messages called setpoint pages. Each time is pressed,
the display advances to the first message of the next setpoints page. Pressing while in the middle of a
setpoints page advances the display to the beginning of the next setpoint page. Pressing while in the
middle of an actual values page returns the display to the last setpoint message viewed. If the display has
timed out to the default messages, pressing
returns the display to the last viewed setpoint message.
The / keys move between messages within a page.
4.3.2 ACTUAL KEY
Measured values and collected data messages are arranged into groups of related messages called actual
values pages. Each time
is pressed, the display advances to the first message of the next actual values
page. Pressing while in the middle of an actual values page advances the display to the beginning of
the next page. Pressing while in the middle of a setpoints page returns the display to the last actual val-
ues message viewed. If the display has timed out to the default messages, pressing returns the display
to the last viewed actual values message. The / keys move between messages within a
page.
4.3.3 ESCAPE KEY
The key is context-sensitive. The response depends on the message displayed and the relay status. If a
value is edited incorrectly during programming, pressing before pressing restores the original
setpoint value. In other situations, moves the display to the next higher header message. This continues
until the current sub-header is reached.
4.3.4 ENTER KEY
The context-sensitive key response depends on the displayed message and the relay status. While dis-
playing a sub-header whose lower line reads
[ENTER] for more
, press to enter the group of messages
associated with the upper line. After editing setpoints numerically or with / , press to
store a new value in memory. Setpoint access must be allowed for this operation to succeed. The current mes-
sage can also be made a default message by pressing the key sequence:
[ . ]
4.3.5 MESSAGE UP/DOWN KEY
The / keys move through messages within a page. scrolls upward through a list of
messages while scrolls downward through the list.
4.3.6 VALUE UP/DOWN KEY
Setpoint values are entered using / or the numeric keys. It is generally easier to enter
numeric values using the number keys and multiple choice selections with / . When a set-
point calls for a yes/no response, pressing or toggles the value between yes and no. For
multiple choice selections, pressing or displays the next choice. For numeric setpoints,
pressing increases the value by its step increment. When the maximum value is reached, setpoint
selection continues from the minimum value. Each time is pressed, the value decreases by its step
increment. When the minimum value is reached, setpoint selection continues from the maximum value. Press
and hold the value keys down to rapidly change values.
S ET PO INT
S ET PO INT
S ET PO INT
S ET PO INT
M E SSA G E M E SSA G E
A CT U A L
A CT U A L
A CT U A L
A CT U A L
M E SS A G E M E SS A G E
ES C A P E
ES C A P E
E N TE R
E S CA P E
E N T E R
EN T E R
V A LU E V AL U E
E N T E R
E N T E R EN T E R
M E SS A G E M E SSA G E M E SSA G E
M E SSA G E
V AL U E V AL U E
V AL U E V AL U E
V AL U E V AL U E
V AL U E V AL U E
V AL U E
V AL U E