Installation Manual
4 ACS550-PD 3R Irrigation Packaged Drive
Safety
Safety
WARNING! The ACS550 adjustable speed AC drive with Input Disconnect
should ONLY be installed by a qualied electrician.
WARNING! Even when the motor is stopped, dangerous voltage is present at
the Power Circuit terminals U1, V1, W1 and U2, V2, W2 and, depending on the
frame size, UDC+ and UDC-, or BRK+ and BRK-.
WARNING! Dangerous voltage is present when input power is connected. After
disconnecting the supply, wait at least 5 minutes (to let the intermediate circuit
capacitors discharge) before removing the cover.
WARNING! Even when power is removed from the input terminals of the
ACS550, there may be dangerous voltage (from external sources) on the
terminals of the relay outputs.
WARNING! When the control terminals of two or more drive units are
connected in parallel, the auxiliary voltage for these control connections must
be taken from a single source which can either be one of the units or an
external supply.
WARNING! The ACS550 will start up automatically after an input voltage
interruption if the external run command is on.
WARNING! When the ACS550 with Input Disconnect is connected to the line
power, the Motor Terminals T1, T2, and T3 are live even if the motor is not
running. Do not make any connections when the ACS550 with Input Disconnect
is connected to the line. Disconnect and lock out power to the drive before
servicing the drive. Failure to disconnect power may cause serious injury or
death.
Note! Formoretechnicalinformation,contactthefactoryoryourlocalABBsales
representative.
Use of Warnings and Notes
Therearetwotypesofsafetyinstructionsthroughoutthismanual:
• Notesdrawattentiontoaparticularconditionorfact,orgiveinformationona
subject.
• Warningscautionyouaboutconditionswhichcanresultinseriousinjuryordeath
and/ordamagetotheequipment.Theyalsotellyouhowtoavoidthedanger.The
warningsymbolsareusedasfollows:
Dangerousvoltagewarningwarnsofhighvoltagewhichcancausephysicalinjury
and/ordamagetotheequipment.
Generalwarningwarnsaboutconditions,otherthanthosecausedbyelectricity,
whichcanresultinphysicalinjuryand/ordamagetotheequipment.