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Telemecanique Altivar 56 manual - Northern Industrial

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Chapter 6 — Class 8839 ALTIVAR <strong>56</strong> Combination DevicesBulletin No. 50006-519-01BContents December 1996DANGERHAZARD OF ELECTRIC SHOCK OR BURN• This equipment must be installed and serviced only by qualified electrical personnel.• Turn off power supplying this equipment before working on or inside equipment.• Always use a properly rated voltage sensing device to confirm power is off.• Replace all devices, doors, and covers before turning on power to this equipment.DRIVE ISOLATION HAZARDBefore servicing the drive controller:• Disconnect all power.• Place a “Do Not Turn On” label on drive controller• Lock disconnect in Open position.Before servicing basic power converter when Bypass is selected:• Perform all functions listed above.• Measure voltages at disconnect output to verify they are zero.• Wait 1 minute to allow DC bus to discharge, verify no voltage is present.• Remove line fuses labeled FU1, FU2, and FU3 with tool provided.• Replace cover, then close disconnect.Failure to observe these precautions will result in death or serious injury.116 © 1996 Square D All Rights Reservedηττπ://νιχοντρολσ.χοm

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