Annunciator - GE 850 Instruction Manual

CHAPTER 5: DEVICE, SYSTEM, INPUT AND OUTPUT SETPOINTS

Annunciator

850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
PB7 - DEMAND RESET
Default:
Records > Clear Records > Max Current Demand
Records > Clear Records > Max Real Power Demand
Records > Clear Records > Max Reactive Power Demand
Records > Clear Records > Max Apparent Power Demand
The Demand Reset pushbutton is used to reset all current and power demands or a
combination of them. The resetting is conventionally done by a commands screen in the
software. Using the commands screen, desired operands can be assigned to the
demand clearing commands. For demand reset, the PB7 ON (Demand Reset) operand
can be used for clearing max. current, and power demands. By default, it is
programmed to clear Maximum Current, Real Power, Reactive Power, and Apparent
Power demands.
PB8 - ALT SETTINGS
Default: Setpoints > Control > Setpoint Group > Set Group 2 Active
The Alt Settings pushbutton is used for switching from the active settings group to an
alternate settings group. By default, Group 1 is the active settings group. When PB8 is
pressed, the PB8 ON (Alt Settings) operand can trigger an alternate settings group.
For the pushbutton LED, it may not be suitable to simply follow the pushbutton
activation since the alternate settings can be activated from multiple sources. In this
case, the LED Trigger setting can be set to Group 2 Active operand.
Since the default setting group is Settings Group 1, deactivation of the Alt Settings
pushbutton changes the active setting group back to Group 1.
PB9 - TRIGGER TRANSIENT RECORDER
Default: Setpoints\ Device\ Transient Recorder\ Trigger Source >
The Trigger Transient Recorder pushbutton provides a pulse to the transient recorder
function. Upon pressing this button, an oscillography record is captured according to the
settings configured for the transient recorder.
PB10 - PB LOCK
Default: Setpoints > Device > Front Panel > Programmable PBs > Pushbutton X > Lock
The PB Lock button disables all the configurable pushbuttons on the front panel except
PB10 itself. This does not include softkeys: Navigation, Reset, Home, Escape, or Help. By
default, the PB Lock button has a 3.0 s Hold Pressed setting value. Since its function is
latched, the configurable pushbuttons stay locked until PB10 is pressed again for 3.0s to
unlatch it and unlock the other pushbuttons. All configurable pushbuttons have the
LOCK setting. A PB10 ON (PB Lock) operand can be assigned to each configurable
pushbutton to lock them.
Description
The graphical annunciator panel provides an emulation of a conventional physical
annunciator panel with backlit indicators each inscribed with a description of the alarm
condition that lights the indicator. The annunciator has 36 user-configurable
(programmable) indicators. The indicators can be arranged in pages of 3x3 or 2x2 grids.
Each indicator can have up to 3 lines of configurable text. When the indicators are not
active (i.e. a configured FlexOperand for the annunciator is not triggered), the background
is black and the foreground text color is grey. When the associated FlexOperand becomes
active, the background and the foreground turns brighter in color per the color
configuration. When disabled, the indicators are greyed out with no text.
Layout - If the grid layout is selected to be 3x3, the annunciator has 4 pages. If the grid
layout is 2x2, the annunciator has 9 pages. The numbering of the indicators is shown as
follows.
DEVICE
5–55