ABB DriveIT ACH550-01 User Manual page 30

ACH550 User's Manual
The following figure shows an example of correct wiring.
min 300 mm [12 In]
min 300 mm [12 In]
Note! If an output isolator or contactor is used, it is considered
as good engineering practice to supply either a stop signal or
RUN ENABLE signal (see parameter 1601) from an auxiliary
contact of the isolator to the ACH550.
26 Preparing for installation