GE Multilin L30 Line Current Differential System 5-11
5 SETTINGS 5.2 PRODUCT SETUP
5
The UNAUTHORIZED ACCESS operand is reset with the COMMANDS CLEAR RECORDS RESET UNAUTHORIZED
ALARMS command. Therefore, to apply this feature with security, the command level should be password-protected. The
operand does not generate events or targets.
The access level timeout settings are shown below.
PATH: SETTINGS PRODUCT SETUP SECURITY ACCESS SUPERVISION ACCESS LEVEL TIMEOUTS
These settings allow the user to specify the length of inactivity required before returning to the restricted access level. Note
that the access level will set as restricted if control power is cycled.
• COMMAND LEVEL ACCESS TIMEOUT: This setting specifies the length of inactivity (no local or remote access)
required to return to restricted access from the command password level.
• SETTING LEVEL ACCESS TIMEOUT: This setting specifies the length of inactivity (no local or remote access)
required to return to restricted access from the command password level.
DUAL PERMISSION SECURITY ACCESS
PATH: SETTINGS PRODUCT SETUP SECURITY DUAL PERMISSION SECURITY ACCESS
The dual permission security access feature provides a mechanism for customers to prevent unauthorized or unintended
upload of settings to a relay through the local or remote interfaces interface.
The following settings are available through the local (front panel) interface only.
• LOCAL SETTING AUTH: This setting is used for local (front panel or RS232 interface) setting access supervision.
Valid values for the FlexLogic operands are either “On” (default) or any physical “Contact Input ~~ On” value.
If this setting is “On“, then local setting access functions as normal; that is, a local setting password is required. If this
setting is any contact input on FlexLogic operand, then the operand must be asserted (set as on) prior to providing the
local setting password to gain setting access.
If setting access is not authorized for local operation (front panel or RS232 interface) and the user attempts to obtain
setting access, then the
UNAUTHORIZED ACCESS message is displayed on the front panel.
If this setting is "Off," firmware upgrades are blocked. If this setting is "On," firmware upgrades are allowed.
• REMOTE SETTING AUTH: This setting is used for remote (Ethernet or RS485 interfaces) setting access supervision.
If this setting is “On” (the default setting), then remote setting access functions as normal; that is, a remote password is
required). If this setting is “Off”, then remote setting access is blocked even if the correct remote setting password is
provided. If this setting is any other FlexLogic operand, then the operand must be asserted (set as on) prior to provid-
ing the remote setting password to gain setting access.
If this setting is "Off," firmware upgrades are blocked. If this setting is "On," firmware upgrades are allowed.
• ACCESS AUTH TIMEOUT: This setting represents the timeout delay for local setting access. This setting is applicable
when the LOCAL SETTING AUTH setting is programmed to any operand except “On”. The state of the FlexLogic operand
is continuously monitored for an off-to-on transition. When this occurs, local access is permitted and the timer pro-
grammed with the
ACCESS AUTH TIMEOUT setting value is started. When this timer expires, local setting access is
immediately denied. If access is permitted and an off-to-on transition of the FlexLogic operand is detected, the timeout
is restarted. The status of this timer is updated every 5 seconds.
ACCESS LEVEL
TIMEOUTS
COMMAND LEVEL ACCESS
TIMEOUT: 5 min
Range: 5 to 480 minutes in steps of 1
MESSAGE
SETTING LEVEL ACCESS
TIMEOUT: 30 min
Range: 5 to 480 minutes in steps of 1
DUAL PERMISSION
SECURITY ACCESS
LOCAL SETTING AUTH:
On
Range: selected FlexLogic operands (see below)
MESSAGE
REMOTE SETTING AUTH:
On
Range: FlexLogic operand
MESSAGE
ACCESS AUTH
TIMEOUT: 30 min.
Range: 5 to 480 minutes in steps of 1
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