5-78 C70 Capacitor Bank Protection and Control System GE Multilin5.2 PRODUCT SETUP 5 SETTINGS55.2.12 CONTROL PUSHBUTTONSPATH: SETTINGS PRODUCT SETUP CONTROL PUSHBUTTONS CONTROL PUSHBUTTON 1(7)There are three standard control pushbuttons, labeled USER 1, USER 2, and USER 3, on the standard and enhanced frontpanels. These are user-programmable and can be used for various applications such as performing an LED test, switchingsetting groups, and invoking and scrolling though user-programmable displays.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 C70 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 performthe desired function. The operand remains asserted as long as the pushbutton is pressed and resets when the pushbuttonis released. A dropout delay of 100 ms is incorporated to ensure fast pushbutton manipulation will be recognized by variousfeatures 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 whenthe pushbutton is released. The faceplate keys (including control keys) cannot be operated simultaneously – a given keymust be released before the next one can be pressed. CONTROL PUSHBUTTON 1CONTROL PUSHBUTTON 1FUNCTION: DisabledRange: Disabled, EnabledMESSAGE CONTROL PUSHBUTTON 1EVENTS: DisabledRange: Disabled, EnabledControl pushbuttons842813A1.CDR842733A2.CDRPICKUPALARMTRIPTEST MODETROUBLEIN SERVICESTATUSUSER 3USER 2USER 1RESETEVENT CAUSENEUTRAL/GROUNDPHASE CPHASE BPHASE AOTHERFREQUENCYCURRENTVOLTAGETHREESTANDARDCONTROLPUSHBUTTONSUSER 7USER 6USER 5USER 4FOUR EXTRAOPTIONALCONTROLPUSHBUTTONS
