• Disconnect the internal EMC filter when installing the drive on an IT system (an
ungrounded power system or a
high-resistance-grounded
[over 30 ohms] power
system), otherwise the system will be connected to ground potential through the
EMC filter capacitors. This may cause danger or damage the drive. See page 40.
Note: When the internal EMC filter is disconnected, the drive is not EMC
compatible.
• Disconnect the internal EMC filter when installing the drive on a corner-grounded
TN system, otherwise the drive will be damaged. See page 40. Note: When the
internal EMC filter is disconnected, the drive is not EMC compatible.
• All ELV (extra low voltage) circuits connected to the drive must be used within a
zone of equipotential bonding, ie within a zone where all simultaneously
accessible conductive parts are electrically connected to prevent hazardous
voltages appearing between them. This is accomplished by a proper factory
grounding.
Note:
Even when the motor is stopped, dangerous voltage is present at the power circuit
terminals U1, V1, W1 and U2, V2, W2 and BRK+ and BRK-.
General
safety
WARNING! Ignoring the following instructions can cause physical injury or death, or
damage to the equipment.
• The drive is not field repairable. Never attempt to repair a malfunctioning drive;
contact your local ABB representative or Authorized Service Center for
replacement.
• Make sure that dust from drilling does not enter the drive during the installation.
Electrically conductive dust inside the drive may cause damage or lead to
malfunction.
• Ensure sufficient cooling.
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