ACS 400 User’s Manual1InstallationStudy these installation instructions carefully before proceeding. Failure to observe the warningsand instructions given may cause a malfunction or personal hazard.Preparation before installationTo install the ACS 400 you need the following: screwdrivers, wire stripper, tape measure, 4 piecesof ∅ 5 mm screws or nuts and bolts (depending on the mounting surface), drill.At this point it is a good idea to check the motor parameters and write them down: supply voltage,nominal current, nominal frequency, cos phi, nominal power and nominal speed.Unpacking the unitThe ACS 400 comes in a box that in addition to the unit itself and this User’s Manual containsCable Gland Plates, Warning Stickers, an EMC Instruction and a separate Installation Guide. Theseparate Installation Guide gives a summary of the installation instructions described here.To help you marking the fixing points for installation of your ACS 400 a Wall Mounting Template isdrawn on the lid of the box. Remove the lid and save it.Step by step instructionsThe installation of the ACS 400 has been broken down into a number of steps that are listed inFigure 1 on page 2. The steps must be carried out in the order shown. To the right of each stepreference is made to one or more Reference Sections on the following pages of this User’s Manual.These sections give detailed information needed for the correct installation of the unit.Warning! Before you begin read “Safety” on page iii.