ABB NMBP-01 Installation And Startup Manual page 6

Safety Instructions
General Safety
Instructions
iv
WARNING! All electrical installation and maintenance work on the ACS
600 should be carried out by qualified electricians.
The ACS 600 and adjoining equipment must be properly earthed.
Do not attempt any work on a powered ACS 600. After switching off the
mains, always allow the intermediate circuit capacitors 5 minutes to
discharge before working on the frequency converter, the motor or the
motor cable. It is good practice to check (with a voltage indicating
instrument) that the frequency converter is in fact discharged before
beginning work.
The ACS 600 motor cable terminals are at a dangerously high voltage
when mains power is applied, regardless of motor operation.
There can be dangerous voltages inside the ACS 600 from external
control circuits when the ACS 600 mains power is shut off. Exercise
appropriate care when working with the unit. Neglecting these
instructions can cause physical injury and death.
WARNING! There are several automatic reset functions in the
ACS 600. If selected, they reset the unit and resume operation after a
fault. These functions should not be selected if other equipment is not
compatible with this kind of operation, or dangerous situations can be
caused by such action.
More Warnings and Notes are printed at appropriate instances along
the text.
Installation and Start-up Guide for NMBP-01