Telemecanique Altivar 56 manual - Northern Industrial

Chapter 4 — DiagnosticsBulletin No. 50006-519-01BPreventive Maintenance December 1996PREVENTIVEMAINTENANCELEDSBefore performing preventive maintenance, remove all power and check the busvoltage (Procedure 1 on page 42).The following preventive maintenance procedures are recommended at regularintervals:• Check the condition and tightness of the connections.• Make sure the ventilation is effective and temperature around the drivecontroller remains at an acceptable level.• Remove dust and debris from the drive controller, if necessary.• If anything unusual occurs when putting the drive controller into service orduring operation, be sure all recommendations relating to the environment,mounting and connecting the drive controller have been followed.The LEDs on the front of the drive controller indicate the following:FAULT(Red)CAUTION(Yellow)POWER(Green)DC BUS(RED)Illuminated: Fault exists.Illuminated with Fault LED OFF: Drive controller is running and in current limit.NOTE: LED may appear to flash rapidly as drive controller regulates at current limit.Slow Flashing with Fault LED OFF: This Pre-Alarm indicates either a Drive Overtemperature Fault (ATV56D16N4 to D79N4 and ATV56D12M2 to D46M2) or a Motor Overload Fault. Consult Keypad Display for Motor Thermal State or Drive Thermal State (ATV56D16N4 to D79N4 and ATV56D12M2 to D46M2) to determine which condition is causing the Pre-Alarm. If either of these thermal states exceeds 100%, the Caution LED will flash slowly. Illuminated with Fault LED ON: Drive controller fault exists on either Motor Overload or Drive Overtemperature and the cool-down period has not yet expired. Consultthe fault display on the keypad or the fault history in Menu 3 to determine the most recent fault.Illuminated: Drive controller is powered;DC bus ≥ 50 V or voltage is present at CL1-CL2.Illuminated: DC bus ≥ 50 VFigure 26: Drive Controller LEDs44 © 1996 Square D All Rights Reservedηττπ://νιχοντρολσ.χοm