Operating Instructions

Safety
Residual risks
3
15 |
118
Siemens
A5E36496664A_f
Smart Infrastructure 2021-10-11
WARNING
Danger to life due to moving (rotating) mechanical parts!
When the variable speed drive is switched on, the motor may start up
unexpectedly. Contact with moving parts can cause severe physical injuries and
serious property damage.
● Only touch these parts when the machine is at a standstill.
● Certain parameter settings can cause the variable speed drive to restart
automatically after a fault or after a failure in the power supply once the fault is
eliminated and acknowledged or after the power supply is restored.
● Ensure that the DIP switches are correctly set, and that the inputs are
properly configured. Otherwise, the drive can start inadvertently.
● Install a mechanical disconnector (depending on the application) that allows
the motor feeder cable of the variable speed drive to be disconnected for
maintenance or troubleshooting.
3.5.3 Dangers due to fire and explosion
DANGER
Danger to life due to spread of fire caused by use of housings that
do not
meet the required standards!
Fire and smoke can cause severe personal injury or property damage.
● Install devices without a protective housing in a metal control cabinet (or
provide equivalent protection for the device) in such a way that contact with
fire is prevented.
● Ensure that smoke can only escape via controlled and monitored paths.
DANGER
Danger to life due to the motor catching fire in the event of insulation
overload!
There is a greater load on the motor insulation through a ground fault in an IT
system. If the insulation fails, it is possible that death or severe injury can occur
as a result of smoke and fire.
● Use a monitoring device that signals an insulation fault.
● Correct the fault as quickly as possible so the motor insulation is not
overloaded.