Danger to life due to fire spreading if the housing is inadequate
Fire and smoke can cause severe injury or material damage.
• Install devices without a protective housing in a metal control cabinet (or protect the
• Ensure that smoke can only escape via controlled and monitored paths.
Danger to life through unexpected movement of machines when using mobile wireless
devices or mobile phones
Using mobile radios or mobile phones with a transmit power > 1 W closer than approx. 2 m
to the components may cause the devices to malfunction, influence the functional safety of
machines therefore putting people at risk or cause material damage.
• When close to components, switch off all wireless devices and mobile phones.
Danger to life due to the motor catching fire in the event of insulation overload
There is a greater load on the motor insulation as result of 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
• Use a monitoring device that signals an insulation fault.
• Correct the fault as quickly as possible so the motor insulation is not overloaded.
Danger to life due to fire if overheating occurs because of insufficient ventilation clearances
Inadequate ventilation clearances can cause overheating of components with subsequent
fire and smoke. This can cause severe injury or even death. This can also result in
increased downtime and reduced service lives for devices/systems.
• Ensure compliance with the specified minimum clearances as ventilation clearance for
Cabinet design and EMC
Operating Instructions, 07/2016, A5E00427629A
device by another equivalent measure) in such a way that contact with fire is prevented.
the respective component.
1.1 General safety instructions