Safety instructions
Residual hazards
2
10
Lenze • BA 33.0006 • 5.1
Motor protection
• Installed thermal detectors are no full protection for the machine.
– If required, limit the maximum current, parameterise the controller such that it
will be switched off after some seconds of operation with I > I
N
, especially if
there is the danger of blocking.
– Installed overload protection does not prevent an overload u nder any
conditions.
• Installed brakes are no fail-safe brakes .
– The torque may be reduced by disruptive factors that cannot be influenced such
as ingressing oil.
• Fuses are no motor protection.
– Use current-dependent motor protection switches at average operating
frequency.
– Use installed thermal detectors at high operating frequency.
• Too high torques cause a fraction of the motor shaft.
– The maximum torques according to catalogue must not be exceeded.
• Lateral forces from the motor shaft may occur.
– Align shafts of motor and driving machine exactly to each other.
• If deviations from normal operation occur, e.g. increased temperature, noise,
vibration, determine the cause and, if necessary, contact the manufacturer. If in
doubt, switch off the motor.
Fire protection
• Fire hazard
– Prevent contact with flammable substances.
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