GE T60 Instruction Manual page 228

5.2 PRODUCT SETUP
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 T60 is ordered with the 12 user-pro-
grammable 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.
5-82
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)
T60 Transformer Protection 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