Safety - ABB ACS 400 User Manual

Safety

Warning! Only a competent electrician may install the ACS 400.
Warning! Dangerous voltages are present when mains supply 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 the ACS 400 is powered down, there may be dangerous external
voltages at relay terminals RO1A, RO1B, RO1C, RO2A, RO2B, RO2C.
Warning! Never attempt to repair a broken unit; contact the supplier.
Warning! The ACS 400 will start up automatically after an input voltage interruption if the
external run command is on.
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 S, Table 11).
Note! For more technical information, contact the supplier.
ACS 400 User's Manual
, U ) before servicing the unit. See E.
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