GE Multilin 750/760 Feeder Management Relay 4-5
4 USER INTERFACES 4.1 FRONT PANEL INTERFACE
4
c) FLASH 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 RELAY SETUP ÖØ FRONT PANEL Ö FLASH MES-
SAGE TIME. The factory default flash message time is 4 seconds.
Table 4–1: SELF-TEST WARNINGS
ERROR SEVERITY DESCRIPTION
A/D Virtual Ground Major This warning is caused by a failure of the analog to digital converter. The integrity of system
input measurements is affected by this failure.
Analog Output +32V Minor Caused by the loss of the +32 V DC power supply used to power analog outputs. Analog output
currents are affected by this failure.
Clock Not Set Minor Occurs if the clock has not been set.
Dry Contact +32V Minor Caused by the loss of the +32 V DC power supply used to power dry contacts of logic inputs.
Logic inputs using internal power are affected by this failure.
EEPROM Corrupt Major Caused by detection of corrupted location(s) in the relay data memory which cannot be self-
corrected. Any function of the relay is susceptible to malfunction from this failure.
Factory Service Major This warning occurs when the relay is in factory service mode.
FLASH Corrupt Major This warning is caused by detection of a corrupted location in the program memory as
determined by a CRC error checking code. Any function of the relay is susceptible to
malfunction from this failure.
Force Analog Out Minor Occurs when the
FORCE A/O FUNCTION setpoint is “Enabled”.
Force Relays Minor Occurs when the
FORCE OUTPUT RELAYS FUNCTION setpoint is "Enabled".
Internal RS485 Minor Caused by a failure of the internal RS485 communication link. Attempts to read actual values
or write setpoints will produce unpredictable results.
Internal Temp Minor Caused by the detection of unacceptably low (less than –40°C) or high (greater than +85°C)
temperatures detected inside the unit.
IRIG-B Failure Minor Caused when IRIG-B time synchronization has been enabled but the signal cannot be decoded.
Not Calibrated Minor This warning occurs when the relay has not been factory calibrated.
Pickup Test Minor Occurs when the
PICKUP TEST FUNCTION setpoint is "Enabled".
Prototype Software Minor Occurs when prototype software has been loaded into the relay.
Relay Not Ready Minor This warning occurs when the
750/760 OPERATION setpoint not been set to “Ready”.
RTC Crystal Minor This warning is caused by a failure of the Real Time Clock circuit. The ability of the relay to
maintain the current date and time is lost.
Simulation Mode Minor This warning occurs when the simulation feature of the relay is active.
ADJUSTED VALUE
HAS BEEN STORED
This flash message is displayed in response to the key, while on a setpoint mes-
sage with a numerical value. The edited value had to be adjusted to the nearest multiple
of the step value before it was stored.
COMMAND IS BEING
EXECUTED
This flash message is displayed in response to executing a command message. Entering
"Yes" at a command will display the message
ARE YOU SURE?. Entering "Yes" again will
perform the requested command and display this flash message.
DEFAULT MESSAGE
HAS BEEN ADDED
This flash message is displayed in response to pressing the key, followed by the
key twice, on any message in
S1 RELAY SETUP ÖØ DEFAULT MESSAGES.
DEFAULT MESSAGE
HAS BEEN REMOVED
This message is displayed in response to pressing the key, followed by the key
twice, on any selected default message in
S1 RELAY SETUP ÖØ DEFAULT MESSAGES.
ENTER PASSCODE
IS INVALID
This flash message is displayed in response to an incorrectly entered passcode when
attempting to enable or disable setpoint access.
ENTRY MISMATCH -
CODE NOT STORED
This message is displayed while changing the password with the
S1 RELAY SETUP Ö
PASSCODE ÖØ CHANGE PASSCODE setpoint. If the passcode entered at the PLEASE RE-
ENTER A NEW PASSCODE
prompt is different from the one entered PLEASE ENTER A
NEW PASSCODE
prompt, the relay dumps the new passcode and display this message
ENTER
ENTER
ENTER
Courtesy of NationalSwitchgear.com
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