GE UR Series L90, Instruction Manual

Page: 206 / 846

5-68 L90 Line Current Differential System GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
The location of the control pushbuttons are shown in the following figures.
Figure 5–10: CONTROL PUSHBUTTONS (ENHANCED FACEPLATE)
An additional four control pushbuttons are included on the standard faceplate when the L90 is ordered with the twelve user-
programmable pushbutton option.
Figure 5–11: CONTROL PUSHBUTTONS (STANDARD FACEPLATE)
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.
Figure 5–12: CONTROL PUSHBUTTON LOGIC
Control pushbuttons
842813A1.CDR
842733A2.CDR
PICKUP
ALARM
TRIP
TEST MODE
TROUBLE
IN SERVICE
STATUS
USER 3
USER 2
USER 1
RESET
EVENT CAUSE
NEUTRAL/GROUND
PHASE C
PHASE B
PHASE A
OTHER
FREQUENCY
CURRENT
VOLTAGE
THREE
STANDARD
CONTROL
PUSHBUTTONS
USER 7
USER 6
USER 5
USER 4
FOUR EXTRA
OPTIONAL
CONTROL
PUSHBUTTONS
842010A2.CDR
CONTROL PUSHBUTTON
1 FUNCTION:
SYSTEM SETUP/
BREAKERS/BREAKER 1/
BREAKER 1 PUSHBUTTON
: CONTROL
SYSTEM SETUP/
BREAKERS/BREAKER 2/
BREAKER 2 PUSHBUTTON
: CONTROL
SETTING
SETTINGS
TIMER
FLEXLOGIC OPERAND
Enabled=1
Enabled=1
When applicable
Enabled=1
RUN
OFF
ON
AND
100 msec
0
CONTROL PUSHBTN 1 ON
{