5-8
B90 Low Impedance Bus Differential System
GE Multilin
5.2 PRODUCT SETUP
5 SETTINGS
5
If you establish a local connection to the relay (serial), you cannot view remote passcodes.
ACCESS SUPERVISION
PATH: SETTINGS
PRODUCT SETUP
SECURITY
ACCESS SUPERVISION
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 B90 will lockout password access after
the number of invalid password entries specified by the
INVALID ATTEMPTS BEFORE LOCKOUT
setting has occurred.
The B90 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.
If events or targets are required, the
UNAUTHORIZED ACCESS
operand can be assigned to a digital element programmed
with event logs or targets enabled.
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
ACCESS
SUPERVISION
ACCESS LEVEL
TIMEOUTS
MESSAGE
INVALID ATTEMPTS
BEFORE LOCKOUT: 3
Range: 2 to 5 in steps of 1
MESSAGE
PASSWORD LOCKOUT
DURATION: 5 min
Range: 5 to 60 minutes in steps of 1
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
NOTE
Summary of Contents for B90
Page 10: ...x B90 Low Impedance Bus Differential System GE Multilin TABLE OF CONTENTS ...
Page 284: ...5 166 B90 Low Impedance Bus Differential System GE Multilin 5 8 TESTING 5 SETTINGS 5 ...
Page 334: ...10 8 B90 Low Impedance Bus Differential System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Page 338: ...A 4 B90 Low Impedance Bus Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 460: ...C 30 B90 Low Impedance Bus Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 476: ...E 10 B90 Low Impedance Bus Differential System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Page 502: ...viii B90 Low Impedance Bus Differential System GE Multilin INDEX ...