12 Safety
Safe start-up and operation
General safety
These warnings are intended for all who plan the operation of the drive or operate the
drive.
WARNING! Ignoring the following instructions can cause physical injury or
death, or damage to the equipment.
• Before you connect voltage to the drive, make sure that the drive covers are on.
Keep the covers on during operation.
• Before adjusting the drive and putting it into service, make sure that the motor and
all driven equipment are suitable for operation throughout the speed range
provided by the drive. The drive can be adjusted to operate the motor at speeds
above and below the speed provided by connecting the motor directly to the
power line.
• Do not activate any automatic fault reset functions of the drive control program if
dangerous situations can occur. When activated, these functions will reset the
drive and resume operation after a fault.
• Do not control the motor with an AC contactor or disconnecting device
(disconnecting means); instead, use external commands via the I/O board of the
drive or a fieldbus adapter. The maximum allowed number of charging cycles of
the DC capacitors (i.e. power-ups by applying power) is one per two minutes. The
maximum total number of chargings is 100000 for frame sizes A and B, 50000 for
frame sizes C and D.
• Make sure that any safety circuits (for example, emergency stop and Safe torque
off) are validated in start-up. See chapter Start-up for reference of the validation
instructions.
• The drive is not field repairable. Never attempt to repair a malfunctioning drive;
contact your local ABB representative or Authorized Service Center for
replacement.
• When operating a rotary motor with no load coupled to its shaft, remove the shaft
key to prevent it flying out when the shaft rotates.
• Operating the MotiFlex e180 in torque mode with no load attached to the motor
can cause the motor to accelerate rapidly to excessive speed.
• Improper operation or programming of the drive may cause violent motion of the
motor and driven equipment. Be certain that unexpected motor movement will not
cause injury to personnel or damage to equipment. Peak torque of several times
the rated motor torque can occur during control failure.
• Violent jamming (stopping) of the motor during operation may damage the motor
and drive.
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