Fault tracing 14910Fault tracingContents of this chapterThis chapter describes the fault tracing possibilities of the drive.LEDsWarning and fault messagesSee the firmware manual for the descriptions, causes and remedies of the drive controlprogram warning and fault messages.Where LED Color IndicationControlpanelmountingplatformPOWER Green Control unit is powered and +15 V is supplied to the controlpanel.FAULT Red Drive in fault state.Supply orinvertercontrol unit(A51 orA41)BATT OK Green Battery voltage of the real-time clock is OK (higher than 2.8 V).When the LED is not lit,• battery voltage is below 2.8 V,• the battery is missing, or• the control unit is not powered.PWR OK Green Internal voltage OKFAULT Red The control program indicates that the equipment is faulty. Seethe appropriate firmware manual.WRITE Yellow Writing to SD card in progress.