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5-70
B90 Low Impedance Bus 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 B90 is ordered with the 12 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.
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
Summary of Contents for B90
Page 10: ...x B90 Low Impedance Bus Differential System GE Multilin TABLE OF CONTENTS ...
Page 284: ...5 166 B90 Low Impedance Bus Differential System GE Multilin 5 8 TESTING 5 SETTINGS 5 ...
Page 334: ...10 8 B90 Low Impedance Bus Differential System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Page 338: ...A 4 B90 Low Impedance Bus Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 460: ...C 30 B90 Low Impedance Bus Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 476: ...E 10 B90 Low Impedance Bus Differential System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Page 502: ...viii B90 Low Impedance Bus Differential System GE Multilin INDEX ...