GE Multilin
L30 Line Current Differential System
5-11
5 SETTINGS
5.2 PRODUCT SETUP
5
The following access supervision settings are available.
•
INVALID ATTEMPTS BEFORE LOCKOUT
: This setting specifies the number of times an incorrect password can be
entered within a three-minute time span before lockout occurs. When lockout occurs, the
LOCAL ACCESS DENIED
or
REMOTE ACCESS DENIED
FlexLogic operands are set to “On”. These operands are returned to the “Off” state upon
expiration of the lockout.
•
PASSWORD LOCKOUT DURATION
: This setting specifies the time that the L30 will lockout password access after
the number of invalid password entries specified by the
INVALID ATTEMPTS BEFORE LOCKOUT
setting has occurred.
The L30 provides a means to raise an alarm upon failed password entry. Should password verification fail while accessing
a password-protected level of the relay (either settings or commands), the
UNAUTHORIZED ACCESS
FlexLogic operand is
asserted. The operand can be programmed to raise an alarm via contact outputs or communications. This feature can be
used to protect against both unauthorized and accidental access attempts.
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.
e) 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.
•
REMOTE SETTING AUTH
: This setting is used for remote (Ethernet or RS485 interfaces) setting access supervision.
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
Summary of Contents for L30
Page 10: ...x L30 Line Current Differential System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 L30 Line Current Differential System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 370: ...5 244 L30 Line Current Differential System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 464: ...A 10 L30 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 600: ...C 30 L30 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 610: ...D 10 L30 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 622: ...E 12 L30 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 634: ...F 12 L30 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 644: ...x L30 Line Current Differential System GE Multilin INDEX ...