GE 489 - Manual (Page 57)

GE Multilin 489 Generator Management Relay 4-7
4 SETPOINTS 4.2 S1 489 SETUP
4
4.2S1 489 SETUP 4.2.1 PASSCODE
PATH: SETPOINTS Ö S1 489 SETUP Ö PASSCODE
A passcode access security feature is provided with the 489. The passcode is defaulted to "0" (without the quotes) at the
time of shipping. Passcode protection is ignored when the passcode is "0". In this case, the setpoint access jumper is the
only protection when programming setpoints from the front panel keypad and setpoints may be altered using the RS232
and RS485 serial ports without access protection. If however, the passcode is changed to a non-zero value, passcode pro-
tection is enabled. The access jumper must be installed and the passcode must be entered, to program setpoints from the
front panel keypad. The passcode must also be entered individually from each serial communications port to gain setpoint
programming access from that port.
To enable passcode protection on a new relay, follow the procedure below:
1. Press then until the CHANGE PASSCODE message is displayed.
2. Select "Yes" and follow directions to enter a new passcode 1 to 8 digits in length.
3. Once a new passcode (other than 0) is programmed, it must be entered to gain setpoint access whenever setpoint
access is restricted. Assuming that a non-zero passcode has been programmed and setpoint access is restricted, then
selecting the passcode subgroup causes the
ENTER PASSCODE AGAIN message to appear.
4. Enter the correct passcode. A flash message will advise if the code is incorrect and allow a retry. If it is correct and the
setpoint access jumper is installed, the
SETPOINT ACCESS: Permitted message appears.
5. Setpoints can now be entered. Exit the passcode message with the key and program the appropriate setpoints.
If no keypress occurs for 5 minutes, access will be disabled and the passcode must be re-entered. Removing the set-
point access jumper or setting
SETPOINT ACCESS to "Restricted" also disables setpoint access immediately.
If a new passcode is required, gain setpoint access by entering the current valid passcode. Press to display the
CHANGE PASSCODE message and follow the directions. If an invalid passcode is entered, the encrypted passcode is view-
able by pressing . Consult GE Multilin with this number if the currently programmed passcode is unknown. The pass-
code can be determined with deciphering software.
4.2.2 PREFERENCES
PATH: SETPOINTS Ö S1 489 SETUP ÖØ PREFERENCES
„ PASSCODE
„ [ENTER] for more
ENTER PASSCODE FOR
ACCESS:
Range: 1 to 8 numeric digits. Seen only if passcode is
not "0" and SETPOINT ACCESS is "Restricted".
SETPOINT ACCESS:
Permitted
Range: Permitted, Restricted. Seen only if the passcode
is "0" or SETPOINT ACCESS is "Permitted".
CHANGE PASSCODE:
No
Range: No, Yes. Seen only if the passcode is "0" or
SETPOINT ACCESS is "Permitted".
„ PREFERENCES
„ [ENTER] for more
DEFAULT MESSAGE
CYCLE TIME: 2.0 s
Range: 0.5 to 10.0 s in steps of 1
DEFAULT MESSAGE
TIMEOUT: 300 s
Range: 10 to 900 s in steps of 1
PARAMETER AVERAGES
CALC. PERIOD: 15 min
Range: 1 to 90 min. in steps of 1
TEMPERATURE DISPLAY:
Celsius
Range: Celsius, Fahrenheit
WAVEFORM TRIGGER
POSITION: 25%
Range: 1 to 100% in steps of 1
WAVEFORM MEM BUFFER
8x14 CYCLES
Range: 1x64, 2x42, 3x32, 4x35, 5x21, 6x18, 7x16, 8x14,
9x12, 10x11, 11x10, 12x9, 13x9, 14x8, 15x8,
16x7 cycles
ENTER
ESCAPE
р
р
MESSAGE
ESCAPE
MESSAGE
ESCAPE
ENTER MESSAGE
ESCAPE
MESSAGE
HELP
ENTER
ESCAPE
р
р
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE
MESSAGE
ESCAPE