CHAPTER 6: SETPOINTS
S1 RELAY SETUP
345 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
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SNTP MODE:
Range: Disabled, Unicast, Anycast, Broadcast
Default: Disabled
When “Disabled” is selected for this setting, SNTP time synchronization is disabled.
SNTP PORT:
Range: 0 to 65535
Default: 0
This setting configures the port that 345 .is using.
SNTP SERVER IP ADR:
Range: Standard IP Address format
Default: 000.000.000.000
This setting must be set to the SNTP/NTP server IP address.
UTC OFFSET:
Range: -24.00 to 24.00
Default: 0.00
If this setting is different to zero, this value will be used to convert from UTC to local time
for SNTP synchronization.
NOTE
NOTE:
Refer to the
3 Series Communications Guide
for details on SNTP MODE, SNTP PORT, and
SNTP SERVER IP ADR.
Password security
Password security features are designed into the relay to provide protection against
unauthorized setpoint changes and control. The relay has programmable passwords for
both Local and Remote access, which can be used to allow setpoint changes and
command execution from both the front panel and the communications ports. The remote
user may choose to allow the local user to change the local passwords, or enforce use of
the same passwords locally and remotely. The Local and the Remote passwords can be
set only after password security is enabled by entering a Master Password. The Master
Password is set to “NULL” when the relay is shipped from the factory; setting the Master
Password enables password security.
Each interface (RS485, Ethernet, USB, and front panel keypad) is independent of one
another, meaning that enabling setpoint access on one interface does not enable access
for any of the other interfaces. The password must be explicitly entered via the active
interface in order to change setpoints and execute commands. The Master Password
cannot be set from the keypad, and must instead be accessed from one of the other
interfaces.
The EnerVista 3 Series Setup software includes and interface for programming the relay’s
passwords as well as enabling/disabling setpoint access. For example, when an attempt is
made to modify a setpoint but access is restricted, the program will prompt the user to
enter the password and send it to the relay before the setpoint can be written to the relay.
If a SCADA system is used for relay programming, it is up to the programmer to
incorporate appropriate security for the application.
As well as being logged out of security, which allows the user to read setpoints and actual
values only, three levels of security access are provided: Setpoint Level, Control Level, and
Master Level. The Setpoint and Control Levels can be attained either locally using the Local
passwords (USB port and keypad), or remotely using the Remote passwords (RS485 and
Ethernet ports). The user can have either Setpoint or Control Level access active, but not
both simultaneously from the same interface. Setpoint and Control passwords must be 3
to 10 alphanumeric characters in length. The Master Level is used for setting and resetting
of passwords, and includes all Setpoint and Control Level access rights. The Master
Summary of Contents for 345
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