Siemens 1PH818, Operating Instructions & Installation Instructions

Page: 92 / 198

WARNING
Faults in operation
Deviations from normal operation such as increased power consumption, temperatures or
vibrations, unusual noises or odors, tripping of monitoring devices, etc., indicate that the
machine is not functioning properly. This can cause faults which can result in eventual or
immediate death, serious injury or material damage.
● Immediately inform the maintenance personnel.
● If you are in doubt, immediately switch off the motor, being sure to observe the system-
specific safety conditions.
NOTICE
Risk of corrosion due to condensate
Humid air can condense inside the machine during operation as a result of intermittent duty
or load fluctuations. Condensate can collect inside the motor. Damage such as rust can result.
● Make sure that any condensation can drain away freely.
WARNING
Dangerous voltage via the converter
As long as the feeding converter is switched on, or the DC link of the converter is not
discharged, there can be a voltage at the motor terminals even when the rotor is not moving.
Depending on the converter type, the voltage is up to 1000 V. When coming into contact, this
can result in death, serious injury, and material damage.
● Maintain the five safety rules (Page 13)at all times when operating the machine.
WARNING
Dangerous 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 shaft.
See also
The five safety rules (Page 13)
Operation
8.1 Safety guidelines in operation
SIMOTICS M-1PH8 1PH818., 1PH822.
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Operating Instructions 07/2016