GE 745 Instruction Manual page 61

Transformer protection system
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CHAPTER 4: INTERFACES
4.1.8
Diagnostic Messages
4.1.9
Flash Messages
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
6.
The majority of setpoints are changed by pressing the VALUE keys until the desired
value appears, and then pressing ENTER. Numeric setpoints may also be entered
through the numeric keys (including decimals). If the entered setpoint is out of range,
the original setpoint value reappears. If the entered setpoint is out of step, an adjusted
value will be stored (e.g. 101 for a setpoint that steps 95, 100, 105 is stored as 100). If a
mistake is made entering the new value, pressing ESCAPE returns the setpoint to its
original value. Text editing is a special case described in detail in Entering
alphanumeric text on page 4–5. Each time a new setpoint is successfully stored, a
message will flash on the display stating
7.
Press the 4, 8, and 9 keys, then press ENTER. The following flash message is displayed:
NEW SETPOINT
HAS BEEN STORED
and the display returns to:
SETPOINT ACCESS:
PERMITTED
8.
Press ESCAPE or MESSAGE LEFT to exit the subgroup. Pressing ESCAPE or MESSAGE
LEFT numerous times will always return the cursor to the top of the page.
Diagnostic messages are automatically displayed for any active conditions in the relay
such as trips, alarms, or asserted logic inputs. These messages provide a summary of the
present state of the relay. The Message LED flashes when there are diagnostic messages
available; press the MENU key until the relay displays
MESSAGE RIGHT key, followed by the MESSAGE DOWN key, to scroll through the messages.
Flash messages are warning, error, or general information messages displayed in response
to certain key presses. The length of time these messages remain displayed can be
programmed in
S1 745 SETUP
factory default flash message time is 4 seconds. For additional information and a complete
list of flash messages, refer to Flash Messages on page 6–27.
NEW SETPOINT HAS BEEN STORED
TARGET MESSAGES
PREFERENCES
DEFAULT MESSAGE CYCLE TIME


HARDWARE INTERFACE
.
, then press the
. The
4–7

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