Safety - ABB ACS 400 User Manual

Safety

Warning! Only a competent electrician should install the ACS 400.
Warning! Dangerous voltages are present when input power is connected. Wait at least 5
minutes after disconnecting the supply before removing the cover. Measure the
voltage at DC terminals (U
Warning! Even when the motor is stopped there are dangerous voltages present at Power
Circuit terminals U1, V1, W1 and U2, V2, W2 and U
Warning! Even when power is removed from the input terminals of the ACS 400, there may
be dangerous external voltages at relay terminals RO1A, RO1B, RO1C, RO2A,
RO2B, RO2C.
Warning! The ACS 400 is not a field repairable unit. Never attempt to repair a broken unit;
contact the factory or your local Authorized Service Center for replacement.
Warning! The ACS 400 can start up automatically after an input voltage interruption if
programmed for Automatic Restart after power outage.
Warning! When the control terminals of two or more ACS100/140/400 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 heat sink may reach a high temperature. See Section R.
Note! For more technical information, contact the factory or your local ABB sales representative.
ACS 400 User's Manual
, U ) before servicing the unit. See Section E.
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