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Operation
8.1 Safety instructions for operation
Faults in operation
Any changes with respect to the normal condition can indicate that the machine is not
functioning correctly.
● Higher power consumption, temperatures or vibration levels.
● Unusual noise or smells.
● Monitoring devices respond.
This can cause faults which can result in eventual or immediate death, serious injury or material
damage.
● Immediately inform the service personnel.
● If you are in doubt, immediately switch off the machine, carefully observing the system-
Damage caused by condensation
Humidity in the air can condense for intermittent duty or load fluctuations. Condensate can
collect. Moisture can have a negative impact on the winding insulation or result in damage,
such as corrosion.
● Ensure that any condensation can freely flow away.
Risk of burn injuries as a result of hot surfaces
Individual machine parts can become hot in operation. Burns can result when coming into
contact with these parts.
● Never touch machine parts during operation.
● Allow the machine to cool down before starting work.
● Check the temperature of parts before touching them. If required, wear suitable protective
Danger to life as a result of voltage at the motor terminals when the rotor is rotating
There is always a magnetic flux in the motor due to the permanent magnets in the rotor. With
each rotation of the rotor, a voltage occurs at the motor terminals. As a result of this, there is
also a voltage at the converter output terminals via the connecting cable. Contact with them
can cause death, serious injury or material damage.
● When working on the drive system, you must prevent any rotational movement of the motor
88
specific safety conditions.
equipment.
shaft.
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018
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