ABB ACQ800 Series, Hardware Manual

Page: 9 / 140

ACQ800-37 Hardware Manual 9
Safety instructions
Grounding
These instructions are intended for all who are responsible for the grounding of the
drive. Incorrect grounding can cause physical injury, death or equipment malfunction
and increase electromagnetic interference.
•
When removing a module which is equipped with wheels, pull the module
carefully out of the cubicle along the ramp. Make sure that the wires do not
catch. While pulling on the handle, keep a constant pressure with one foot on
the base of the module to prevent the module from falling on its back.
•
When replacing a module which is equipped with wheels, push the module up
the ramp and back into the cubicle. Keep your fingers away from the edge of
the module front plate to avoid pinching them between the module and the
cubicle. Also, keep a constant pressure with one foot on the base of the module
to prevent the module from falling on its back.
•
Electrically conductive dust inside the unit may cause damage or lead to
malfunction. Make sure that dust from drilling does not enter the drive when
installing.
•
Fastening the cabinet by riveting or welding is not recommended. However, if
welding is necessary, ensure the return wire is properly connected in order not
to damage the electronic equipment in the cabinet. Also ensure that welding
fumes are not inhaled.
•
Ensure sufficient cooling of the unit.
•
Cooling fans may continue to rotate for a while after the disconnection of the
electrical supply.
•
Some parts inside the drive cabinet, such as heatsinks of power
semiconductors, remain hot for a while after the disconnection of the electrical
supply.
WARNING!
•
The printed circuit boards contain components sensitive to electrostatic
discharge. Wear a grounding wrist band when handling the boards. Do not
touch the boards unnecessarily.
WARNING!
•
Ground the drive, the motor and adjoining equipment to ensure personnel
safety in all circumstances, and to reduce electromagnetic emission and pick-
up.
•
Make sure that grounding conductors are adequately sized as required by
safety regulations.
•
In a multiple-drive installation, connect each drive separately to protective
earth (PE).