CHAPTER 4: INTERFACES
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 4–9
4.1.8 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 ZV PREFERENCES ZV DEFAULT MESSAGE CYCLE TIME. The
factory default flash message time is 4 seconds. For additional information and a complete
list of flash messages, refer to Flash Messages on page 6–33.
Self-Test Warning 8
Replace Immediately
Major
This warning is caused by out of range reading
of self test RTD16. The integrity of system input
measurements is affected by this failure.
Clock Not Set
Program Date/Time
Minor Occurs if the clock has not been set.
Unit Temp. Exceeded
Service/CheckAmbient
Minor
Caused by the detection of unacceptably low
(less than –40°C) or high (greater than 85°C)
temperatures detected inside the unit.
Unit Not Calibrated
Replace Immediately
Minor
This warning occurs when the relay has not
been factory calibrated.
Relay Not Configured
Consult User Manual
Minor
This warning occurs when the 489 CT Primary
or Generator parameters are not set.
Service Required
Schedule Maintenance
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.
Table 4–1: Self-Test Warnings
Message Severity Description
Courtesy of NationalSwitchgear.com
To Next Page
Loading...
Need help?
General