GE T60 Instruction Manual page 293

CHAPTER 5: SETTINGS
The digital state can be entered locally (by directly pressing the front panel pushbutton) or remotely (via FlexLogic
operands) into FlexLogic equations, protection elements, and control elements. Typical applications include breaker
control, autorecloser blocking, and setting groups changes. The user-programmable pushbuttons are under the control
level of password protection.
The figure shows user-configurable pushbuttons for the enhanced front panel.
Figure 5-47: User-programmable pushbuttons (enhanced front panel)
The following figure shows user-configurable pushbuttons for the standard front panel.
Figure 5-48: User-programmable pushbuttons (standard front panel)
Both the standard and enhanced front panel pushbuttons can be custom labeled with a factory-provided template,
available online at http://www.gegridsolutions.com/multilin. The EnerVista software can also be used to create labels for
the enhanced front panel.
Each pushbutton asserts its own "On" and "Off" FlexLogic operands (for example,
These operands are available for each pushbutton and are used to program specific actions. If any pushbutton is active,
the operand is asserted.
ANY PB ON
Each pushbutton has an associated LED indicator. By default, this indicator displays the present status of the
corresponding pushbutton (on or off). However, each LED indicator can be assigned to any FlexLogic operand through the
setting.
PUSHBTN 1 LED CTL
The activation and deactivation of user-programmable pushbuttons depends on whether latched or self-reset mode is
programmed.
• Latched mode — In latched mode, a pushbutton can be set (activated) by asserting the operand assigned to the
setting or by directly pressing the associated front panel pushbutton. The state of each pushbutton is
PUSHBTN 1 SET
stored in non-volatile memory and maintained through a loss of control power.
The pushbutton is reset (deactivated) in latched mode by asserting the operand assigned to the
setting or by directly pressing the active front panel pushbutton.
It can also be programmed to reset automatically through the
settings. These settings enable the autoreset timer and specify the associated time delay. The autoreset timer can be
used in select-before-operate (SBO) breaker control applications, where the command type (close/open) or breaker
location (feeder number) must be selected prior to command execution. The selection must reset automatically if
control is not executed within a specified time period.
• Self-reset mode — In self-reset mode, a user-programmable pushbutton can be set (activated) by asserting the
operand assigned to the
active for the time it is pressed plus the dropout time specified in the
pushbutton is activated via FlexLogic, the pulse duration is specified by the
the operand assigned to the
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
setting or by pressing the front panel pushbutton. A pushbutton remains
PUSHBTN 1 SET
setting remains On has no effect on the pulse duration.
PUSHBTN 1 SET
PUSHBUTTON 1 ON
and
PUSHBTN 1 AUTORST PUSHBTN 1 AUTORST DELAY
PUSHBTN 1 DROP-OUT TIME
PUSHBTN 1 DROP-OUT TIME
PRODUCT SETUP
and
PUSHBUTTON 1 OFF).
PUSHBTN 1 RESET
setting. If the
only. The time
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