S1 745 Setup; Passcode; Preferences - GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual

5 SETPOINTS

5.3S1 745 SETUP

PATH: SETPOINTS S1 745 SETUP

PASSCODE

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After installing the setpoint access jumper, a passcode must be entered (if the passcode security feature is enabled) before
setpoints can be changed. When the 745 is shipped from the factory, the passcode is defaulted to 0. When the passcode is
0, the passcode security feature is disabled and only the setpoint access jumper is required for changing setpoints from the
front panel. Passcode entry is also required when programming setpoints from any of the serial communication ports.
• SETPOINT ACCESS: This setpoint cannot be edited directly. It indicates whether passcode protection is enabled
("Read Only") or disabled ("Read & Write").
• RESTRICT SETPOINT WRITE ACCESS: This setpoint is only displayed when setpoint write access is allowed and
the current passcode is not "0". Select Yes and follow directions to restrict write access. This message is replaced by
ALLOW SETPOINT WRITE ACCESS
• ALLOW SETPOINT WRITE ACCESS: This setpoint is only displayed when setpoint write access is restricted. New
setpoints cannot be entered in this state. To gain write access, select Yes and follow directions to enter the previously
programmed passcode. If the passcode is correctly entered, new setpoint entry is allowed. If there is no keypress
within 30 minutes, setpoint write access is automatically restricted. As an additional safety measure, the
ERROR: Access Denied
• CHANGE PASSCODE: Select "Yes" and follow directions to change the current passcode. Changing the passcode to
the factory default of "0" disables the passcode security feature.
• ENCRYPTED PASSCODE: If the programmed passcode is unknown, consult the factory service department with the
encrypted passcode. The passcode can be determined using a deciphering program.
PATH: SETPOINTS S1 745 SETUP

PREFERENCES

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Some relay characteristics can be modified to accommodate the user preferences. This section allows for the definition of
such characteristics.
• FLASH MESSAGE TIME: Flash messages are status, warning, error, or information messages displayed for several
seconds, in response to certain key presses during setpoint programming. The time these messages remain on the
display, overriding the normal messages, can be changed to accommodate different user reading rates.
• DEFAULT MESSAGE TIMEOUT: After this period of time of no activity on the keys, the 745 automatically begins to
display the programmed set of default messages programmed in
GE Multilin
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PASSCODE
ð
SETPOINT ACCESS:
ENTER
Read & Write
ESCAPE
RESTRICT SETPOINT
ESCAPE
WRITE ACCESS? No
MESSAGE
ALLOW SETPOINT
ESCAPE
WRITE ACCESS? No
MESSAGE
CHANGE PASSCODE?
ESCAPE
No
MESSAGE
ENCRYPTED PASSCODE:
ESCAPE
AIKFBAIK
MESSAGE
when write access is restricted.
message is generated when the passcode is entered incorrectly three times in a row:
PREFERENCES
ð
FLASH MESSAGE TIME:
ENTER
4.0 s
ESCAPE
DEFAULT MESSAGE
ESCAPE
TIMEOUT: 300 s
MESSAGE
745 Transformer Management Relay
Range: Read Only, Read & Write
This setpoint cannot be edited!
Range: No, Yes
Range: No, Yes
Range: No, Yes
Range: Factory Default Passcode is "0"
Range: 0.5 to 10.0 s in steps of 0.1
Range: 10 to 900 s in steps of 1
S1 745 SETUP DEFAULT MESSAGES
5.3 S1 745 SETUP
5.3.1 PASSCODE
5
SELF-TEST
5.3.2 PREFERENCES
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