ABB ACS880-204, Hardware Manual

Page: 113 / 404

7. Install temporary grounding as required by the local regulations.
8. Ask the person in control of the electrical installation work for a permit to work.
General notes
￭ Printed circuit boards
WARNING!
Use a grounding wrist band when you handle printed circuit boards. Do not touch
the boards unnecessarily. The boards contain components sensitive to electrostatic
discharge.
￭ Optical components
WARNING!
Obey these instructions. If you ignore them, damage to the equipment can occur.
• Handle the fiber optic cables with care.
• When you unplug the fiber optic cables, always hold the connector, not the cable itself.
• Do not touch the ends of the fibers with bare hands as the ends are extremely sensitive
to dirt.
• Do not bend the fiber optic cables too tightly. The minimum allowed bend radius is
35 mm (1.4”).
Checking the insulation of the assembly
￭ Checking the insulation of the drive system
WARNING!
Do not make any voltage withstand or insulation resistance tests on any part of
the drive as testing can damage the drive. Every drive has been tested for insulation
between the main circuit and the chassis at the factory. Also, there are
voltage-limiting circuits inside the drive which cut down the testing voltage
automatically.
￭ Checking the insulation of the input cable
Before you connect the input power cable to the drive, check its insulation according to local
regulations.
Checking the compatibility with IT (ungrounded) systems
The RFI filter is not suitable for use in IT (ungrounded) systems. Disconnect the filter before
connecting the drive to the supply network. For instructions on how to do this, contact your
local ABB representative.
WARNING!
If a drive with an RFI filter is installed on an IT system (an ungrounded power
system), the system will be connected to earth potential through the filter capacitors
of the drive. This can cause danger, or damage the unit.
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