GE 239 Instruction Manual

Also see for 239: Instruction manual

3-2239 Motor Protection RelayGE Multilin3 OPERATION 3 OPERATION33.2 DISPLAYFigure 3–2: 239 DISPLAYAll messages are displayed in English on the 40-character LCD display, which is visible under variedlighting conditions. While the keypad and display are not actively being used, the screen will displaythe default status message. This message will appear if no key has been pressed for the time pro-grammed in 6 6(783?35()(5(1&(6?'()$8/7 0(66$*( 7,0(. Trip and alarm condition messageswill automatically override default messages.To maximize the lifetime of the display, its brightness can be varied using the setpoint 6 6(783?35()(5(1&(6?'()$8/70(66$*(%5,*+71(66. The display will adjust to set brightness level whenthe default messages are being displayed. If any one of keys on the 239 keypad is pressed or analarm/trip is present the display brightness will automatically become 100%. If the default messagestime is set to OFF, the 239 display will dim to the set brightness level after 5 minutes have elapsedsince one of the keys on the keypad was last pressed.NOTE: Message brightness control is available only on units with the VFD display.3.3 STATUS INDICATORSFigure 3–3: 239 STATUS INDICATORS• TRIP: The 75,3 indicator flashes when the 239 has tripped. This will be caused by any trip condi-tion (overload, short circuit etc.) or a serial trip command issued via the communication port. Theindicator and the trip relay are reset manually by pressing the key, remotely using acomputer reset command, or by closing the external reset input.• ALARM: The $/$50 relay is intended for general purpose alarm outputs. The $/$50 indicatorwill be on while the $/$50 relay is operating. If the $/$50 is programmed as unlatched, thisindicator will flash as long as the alarm condition persists. When the condition clears, the$/$50 indicator will turn off. If the alarm relay has been programmed as latched, the alarm con-dition can only be cleared by pressing the key, by issuing a computer reset command,or by closing the external reset input.• AUXILIARY: The $8;,/,$5< relay is intended for customer specific requirements. The $8;,/,$5< indicator will turn on while the $8;,/,$5< relay is operating.819761A6.CDRTRIP AUXILIARY PICKUPCOMMUNICATESERVICEALARM819762A7.CDRRESETRESET