ABB ACS880-607 Series, Hardware Manual

Page: 39 / 88

General notes
￭ Static electricity
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 fibre 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 brake resistor and resistor cable
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrician, do not do installation or maintenance work.
1. Stop the drive and do the steps in section Electrical safety precautions (page 38) before
you start the work.
2. Check that the resistor cable is connected to the resistor and disconnected from the
drive output terminals.
3. At the drive end, connect the R+ and R- conductors of the resistor cable together.
Measure the insulation resistance between the conductors and the PE conductor with
a measuring voltage of 1000 V DC. The insulation resistance must be higher than
1 Mohm.
R-
R+
ohm
PE
1 kV DC,
> 1 Mohm
Electrical installation 39
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