Safety - ABB ACS550-01 User Manual

ACS550 User's Manual

Safety

Warning! The ACS550 adjustable speed AC drive should ONLY be installed by
a qualified 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 R01
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 ACS550-01/U1 is not a field repairable unit. Never attempt to
repair a malfunctioning unit; contact the factory or your local Authorized
Service Center for replacement.
Warning! The ACS550 will start up automatically after an input voltage
interruption if the external run command is on.
Warning! The heat sink may reach a high temperature. See "Technical Data" on
page 215.
Warning! If the drive will be used in a floating network, remove screws at EM1
and EM3 (Frame size R1
diagrams on page 15 and page 16 respectively. Also see "Unsymmetrically
Grounded Networks" and "Floating Networks" on page 221.
Warning! Do not attempt to install or remove EM1, EM3, F1 or F2 screws while
power is applied to the drive's input terminals.
Note! For more technical information, contact the factory or your local ABB sales
representative.
R03.
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R4), or F1 and F2 (Frame size R5 or R6). See
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Safety