ABB ACH550-01 User Manual page 39

ACH550 User's Manual
The figure below shows an example of correct wiring.
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.
Preparing for installation
min. 300 mm [12 in]
27