GE G60 Instruction Manual page 343

CHAPTER 5: SETTINGS
The pushbutton is reset (deactivated) in latched mode by asserting the operand assigned to the
setting, by directly pressing the active front panel pushbutton, or with the graphical front panel interface.
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
interface. A pushbutton remains active for the time it is pressed physically or pressed in the graphical front panel
interface, plus the dropout time specified in the
FlexLogic, the pulse duration is specified by the
setting remains On has no effect on the pulse duration.
PUSHBTN 1 SET
The pulse duration of the remote set or local front panel pushbutton must be at least 50 ms to operate the
pushbutton. This allows the user-programmable pushbuttons to properly operate during power cycling events and
various system disturbances that can cause transient assertion of the operating signals.
The local and remote operation of each user-programmable pushbutton can be inhibited through the
and settings. If local inhibit is applied, the pushbutton ignores set and reset commands executed
PUSHBTN 1 REMOTE
through the front panel pushbuttons. If remote inhibit is applied, the pushbutton ignores set and reset commands
executed through FlexLogic operands.
The inhibit functions are not applied to the autoreset feature. The inhibit function can be used in SBO control operations to
prevent user-programmable pushbutton activation and ensuring "one-at-a-time" select operation.
The inhibit functions can also be used to prevent pushbutton activation from the accidental pressing of the front panel
pushbuttons. The separate inhibit of the local and remote operation simplifies the implementation of local/remote control
supervision.
Pushbutton states can be logged by the event recorder. User-defined messages can also be associated with each
pushbutton and displayed on standard and enhanced front panels when the user-programmable pushbutton is activated,
and when in the latched mode when the user-programmable pushbutton is deactivated. With the graphical front panel
interface, instead of messages, the status of user-programmable pushbuttons can display on a single-line diagram and
can also display in annunciator page windows and in actual values page cells.
For the graphical front panel, the pushbuttons 1 to 8 are linked to the eight physical pushbuttons, and pushbuttons 9 to 16
are mapped to the graphical interface pushbuttons. To set the buttons for pushbuttons 9 to 16, access Settings > Product
Setup > Graphical Panel > Single Line Diagram Editor, click the PB symbol in the toolbox, then configure pushbuttons 9 to
16.
— This setting selects the mode of the pushbutton (Self-Reset, Latched, Disabled). If set to
PUSHBUTTON 1 FUNCTION
"Disabled," the pushbutton is not active and the corresponding FlexLogic operands (both "On" and "Off") are de-asserted. If
set to "Latched," the pushbutton remains on until reset.
— This setting specifies the top 20-character line of the user-programmable pushbutton message and is
PUSHBTN 1 ID TEXT
intended to provide ID information of the pushbutton. See the User-definable Displays section in this chapter for
instructions on how to enter alphanumeric characters from the keypad. On a graphical front panel, this setting instead
controls the label of the user-programmable pushbutton component on single-line diagrams.
— This setting specifies the bottom 20-character line of the user-programmable pushbutton message
PUSHBTN 1 ON TEXT
and is displayed when the pushbutton is in the "on" position. For example, the text displays in the Event Record. See the
User-definable Displays section for instructions on entering alphanumeric characters from the keypad. On a graphical
front panel, this setting instead controls the on status text of the user-programmable pushbutton component on single-
line diagrams. This setting is not applied to the physical pushbuttons on the graphical front panel.
— This setting specifies the bottom 20-character line of the user-programmable pushbutton message
PUSHBTN 1 OFF TEXT
and displays when the pushbutton is deactivated and the
display when the
PUSHBUTTON 1 FUNCTION
release. The length of the "Off" message is configured with the
G60 GENERATOR PROTECTION SYSTEM – INSTRUCTION MANUAL
setting, by pressing the front panel pushbutton, or by the graphical front panel
PUSHBTN 1 SET
PUSHBTN 1 DROP-OUT TIME
PUSHBTN 1 DROP-OUT TIME
PUSHBUTTON 1 FUNCTION
is "Self-reset" as the pushbutton operand status is implied to be "Off" upon its
and
PUSHBTN 1 AUTORST PUSHBTN 1 AUTORST DELAY
setting. If the pushbutton is activated via
only. The time the operand assigned to the
is "Latched." A message does not
PRODUCT SETUP  DISPLAY PROPERTIES  FLASH MESSAGE
PRODUCT SETUP
PUSHBTN 1 RESET
PUSHBTN 1 LOCAL
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