GE L30 Instruction Manual

Also see for L30: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

GE Multilin L30 Line Current Differential System 5-835 SETTINGS 5.2 PRODUCT SETUP5The pulse duration of the remote set or local front panel pushbutton must be at least 50 ms to operate the pushbut-ton. This allows the user-programmable pushbuttons to properly operate during power cycling events and varioussystem disturbances that can cause transient assertion of the operating signals.The local and remote operation of each user-programmable pushbutton can be inhibited through the PUSHBTN 1 LOCAL andPUSHBTN 1 REMOTE settings. If local inhibit is applied, the pushbutton ignores set and reset commands executed throughthe front panel pushbuttons. If remote inhibit is applied, the pushbutton ignores set and reset commands executed throughFlexLogic operands.The inhibit functions are not applied to the autoreset feature. The inhibit function can be used in SBO control operations toprevent user-programmable pushbutton activation and ensuring “one-at-a-time” select operation.The inhibit functions can also be used to prevent pushbutton activation from the accidental pressing of the front panel push-buttons. The separate inhibit of the local and remote operation simplifies the implementation of local/remote control super-vision.Pushbutton states can be logged by the event recorder. User-defined messages can also be associated with each pushbut-ton and displayed when the pushbutton is activated and when in latched mode when the pushbutton deactivated.• PUSHBUTTON 1 FUNCTION: This setting selects the mode of the pushbutton (Self-Reset, Latched, Disabled). If setto “Disabled,” the pushbutton is not active and the corresponding FlexLogic operands (both “On” and “Off”) are de-asserted.• PUSHBTN 1 ID TEXT: This setting specifies the top 20-character line of the user-programmable pushbutton messageand is intended to provide ID information of the pushbutton. See the User-definable Displays section in this chapter forinstructions on how to enter alphanumeric characters from the keypad.• PUSHBTN 1 ON TEXT: This setting specifies the bottom 20-character line of the user-programmable message and isdisplayed when the pushbutton is in the “on” position. See the User-definable Displays section for instructions onentering alphanumeric characters from the keypad.• PUSHBTN 1 OFF TEXT: This setting specifies the bottom 20-character line of the user-programmable pushbuttonmessage and displays when the pushbutton is deactivated and the PUSHBUTTON 1 FUNCTION is “Latched”. A messagedoes not display when the PUSHBUTTON 1 FUNCTION is “Self-reset” as the pushbutton operand status is implied to be“Off” upon its release. The length of the “Off” message is configured with the PRODUCT SETUP  DISPLAY PROPERTIES FLASH MESSAGE TIME setting.• PUSHBTN 1 HOLD: This setting specifies the time required for a front panel pushbutton to be pressed before it isdeemed active. This timer is reset upon release of the pushbutton. Note that user-programmable pushbutton operationrequires the front panel pushbutton to be pressed a minimum of 50 ms. This minimum time is required prior to activat-ing the user-programmable pushbutton hold timer.• PUSHBTN 1 SET: This setting assigns the FlexLogic operand serving to activate the user-programmable pushbuttonelement. The duration of the incoming set signal must be at least 50 ms.• PUSHBTN 1 RESET: This setting assigns the FlexLogic operand serving to deactivate the user-programmable push-button element. This setting is applicable only if the user-programmable pushbutton is in "Latched" mode.• PUSHBTN 1 AUTORST: This setting enables the user-programmable pushbutton autoreset feature. This setting isapplicable only if the pushbutton is in “Latched” mode.• PUSHBTN 1 AUTORST DELAY: This setting specifies the time delay for automatic reset of the pushbutton when in"Latched" mode.• PUSHBTN 1 REMOTE: This setting assigns the FlexLogic operand serving to inhibit user-programmable pushbuttonoperation from the operand assigned to the PUSHBTN 1 SET or PUSHBTN 1 RESET settings.• PUSHBTN 1 LOCAL: This setting assigns the FlexLogic operand serving to inhibit user-programmable pushbuttonoperation from the front panel pushbuttons. This inhibit functionality is not applicable to pushbutton autoreset.• PUSHBTN 1 DROP-OUT TIME: This setting applies only to “Self-Reset” mode and specifies the duration of the user-programmable pushbutton active status after the front panel pushbutton has been released. When activated remotely,this setting specifies the entire activation time of the pushbutton; the length of time the operand selected by PUSHBTN1 SET remains on has no effect on the pulse duration.• PUSHBTN 1 LED CTL: This setting assigns the FlexLogic operand serving to drive the front panel pushbutton LED. Ifthis setting is “Off”, then LED operation is directly linked to the PUSHBUTTON 1 ON operand.NOTE