Additional Instructions And Notes - ABB ACS560 Hardware Manual

14 Safety instructions
• Make sure that the voltage between the drive input power terminals (L1, L2, L3)
and the grounding terminal (PE) is close to 0 V.
• Make sure that the voltage between the drive DC terminals (UDC+ and UDC-) and
the grounding terminal (PE) is close to 0 V.
6. Install temporary grounding as required by the local regulations.
7. Ask for a permit to work from the person in control of the electrical installation work.
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Additional instructions and notes

WARNING!
Obey these instructions. If you ignore them, injury or death, or damage to the
equipment can occur.
• If you install the drive on an IT system (an ungrounded power system or a
high-resistance-grounded [over 30 ohms] power system), disconnect the ground-to-phase
varistor; otherwise the varistor circuit can be damaged. See
varistor (page 63).
• If you install the drive on an IT system (an ungrounded power system or a
high-resistance-grounded [over 30 ohms] power system), disconnect the internal EMC
filter; otherwise the system will be connected to ground potential through the EMC filter
capacitors. This can cause danger or damage the drive. See
R0...R3 (page 62).
If you install the drive on an IT system (an ungrounded power system or a
high-resistance-grounded [over 30 ohms] power system), disconnect the internal EMC
filter; otherwise the system will be connected to ground potential through the EMC filter
capacitors. This can cause danger or damage the drive.
Note:
Disconnecting the internal EMC filter increases the conducted emission and reduces
the drive EMC compatibility considerably. See section
cable length (page
• Use all ELV (extra low voltage) circuits connected to the drive only within a zone of
equipotential bonding, that is, within a zone where all simultaneously accessible
conductive parts are electrically connected to prevent hazardous voltages appearing
between them. You can accomplish this by a proper factory grounding, that is, make
sure that all simultaneously accessible conductive parts are grounded to the protective
earth (PE) bus of the building.
• Do not do insulation or voltage withstand tests on the drive or drive modules.
Note:
• The motor cable terminals of the drive are at a dangerous voltage when the input power
is on, regardless of whether the motor is running or not.
• The DC and brake resistor terminals (UDC+, UDC-, R+ and R-) are at a dangerous
voltage.
• External wiring can supply dangerous voltages to the terminals of relay outputs (RO1,
RO2 and RO3).
• The Safe torque off function does not remove the voltage from the main and auxiliary
circuits. The function is not effective against deliberate sabotage or misuse.
120).
Ground-to-phase
Brake resistor assembly
EMC compatibility and motor