GE N60 Instruction Manual page 188

5.2 PRODUCT SETUP
Firmware revisions 3.2x and older use these three pushbuttons for manual breaker control. This functionality has been
retained – if the breaker control feature is configured to use the three pushbuttons, they cannot be used as user-program-
mable control pushbuttons.
The location of the control pushbuttons are shown in the following figures.
An additional four control pushbuttons are included on the standard faceplate when the N60 is ordered with the twelve
user-programmable pushbutton option.
5
Control pushbuttons are not typically used for critical operations and are not protected by the control password. However,
by supervising their output operands, the user can dynamically enable or disable control pushbuttons for security reasons.
Each control pushbutton asserts its own FlexLogic operand. These operands should be configured appropriately to perform
the desired function. The operand remains asserted as long as the pushbutton is pressed and resets when the pushbutton
is released. A dropout delay of 100 ms is incorporated to ensure fast pushbutton manipulation will be recognized by various
features that may use control pushbuttons as inputs.
An event is logged in the event record (as per user setting) when a control pushbutton is pressed. No event is logged when
the pushbutton is released. The faceplate keys (including control keys) cannot be operated simultaneously – a given key
must be released before the next one can be pressed.
The control pushbuttons become user-programmable only if the breaker control feature is not configured for manual control
via the USER 1 through 3 pushbuttons as shown below. If configured for manual control, breaker control typically uses the
larger, optional user-programmable pushbuttons, making the control pushbuttons available for other user applications.
5-72
Figure 5–11: CONTROL PUSHBUTTONS (ENHANCED FACEPLATE)
STATUS EVENT CAUSE
IN SERVICE VOLTAGE
TROUBLE CURRENT
TEST MODE FREQUENCY
TRIP OTHER
ALARM PHASE A
PICKUP PHASE B
PHASE C
NEUTRAL/GROUND
Figure 5–12: CONTROL PUSHBUTTONS (STANDARD FACEPLATE)
N60 Network Stability and Synchrophasor Measurement System
Control pushbuttons
842813A1.CDR
RESET
THREE
USER 1
STANDARD
USER 2
CONTROL
PUSHBUTTONS
USER 3
USER 4
FOUR EXTRA
USER 5
OPTIONAL
USER 6
CONTROL
PUSHBUTTONS
USER 7
842733A2.CDR
5 SETTINGS
GE Multilin