GE 750 Instruction Manual page 93

CHAPTER 4: INTERFACES
Error
Force Relays
Internal RS485
Internal Temp
IRIG-B Failure
Not Calibrated
Pickup Test
Prototype Software
Relay Not Ready
RTC Crystal
Simulation Mode
Self-Test 1
Self-Test 2
Test Mode 3
4.3.4 Flash
Messages
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
Table 4–2: Self-Test Warnings
Severity
Minor
Minor
Minor
Minor
Minor
Minor
Minor
Minor
Minor
Minor
Major
Major
Major
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
default flash message time is 4 seconds.
Description
Occurs when the
FORCE OUTPUT RELAYS FUNCTION
is "Enabled".
Caused by a failure of the internal RS485 communication
link. Attempts to read actual values or write setpoints will
produce unpredictable results. Contact Multilin Technical
Caused by the detection of unacceptably low (less than –
40°C) or high (greater than +85°C) temperatures detected
inside the unit.
Caused when IRIG-B time synchronization has been
enabled but the signal cannot be decoded. Ensure correct
IRIG-B signal is available to the device.
This warning occurs when the relay has not been factory
calibrated. Contact Multilin Technical Support.
Occurs when the
PICKUP TEST FUNCTION
"Enabled".
Occurs when prototype software has been loaded into the
relay. Contact Multilin Technical Support for the correct
firmware update.
This warning occurs when the
has not been set to "Ready".
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.
This warning occurs when the simulation feature of the
relay is active.
This warning occurs when
• SR750 receives DNP protocol command to cold restart.
• Enervista 750 Setup software sends Modbus command
to SR750 for firmware update, from version 7.31 or
previous version, to version 7.40.
• Watchdog timer expiry.
This warning occurs when microprocessor self-monitoring
detects task execution failure.
This warning occurs when Enervista 750 Setup software
sends Modbus command to SR750 for firmware update
from version 7.40 to a following version.
 
FRONT PANEL
RELAY MESSAGES
Support.
setpoint is
setpoint
750/760 OPERATION
. The factory
FLASH MESSAGE TIME
setpoint
4 - 9