Safety Instructions - Siemens SINAMICS DCM Operating Instructions Manual

7.3.2

Safety instructions

Non-observance of the safety instructions
If the safety instructions in Chapter 1 are not observed, accidents can occur involving
severe injuries or death.
• Make sure that the safety instructions are observed.
Fire through overheating due to insufficient ventilation clearances
Inadequate ventilation clearances cause overheating with a risk for personnel due to smoke
and fire. This can also result in increased failures and reduced service life of the Sensor
Module Cabinet-Mounted.
• For this reason, it is imperative that you maintain the 50 mm clearances above and
NOTICE
Shield support
When the encoder system is connected via terminals, make sure that the cable shield is
connected to the component.
Note
Encoder failures due to encoder signal disturbances
Unfavorable material combinations generate static electricity between the belt pulley and the
belt. This electrostatic charge (several kV) can discharge via the motor shaft and the
encoder which leads to disturbance of the encoder signals (encoder error).
• Use an antistatic version of the belt (special conductive polyurethane mixture).
Electric shock when disconnecting and connecting encoder cables during operation
When disconnecting plug-in connections during operation, arcs can result in severe injury
or death.
• Only disconnect or connect the encoder cables to Siemens motors in a voltage-free
SINAMICS DCM Control Module
Operating Instructions, 12/2018, A5E34888669A
WARNING
WARNING
below the Sensor Module Cabinet-Mounted.
WARNING
state if hot-plugging has not been specifically released. When using direct measuring
systems (third-party encoders), ask the manufacturer whether hot-plugging is permitted.
Additional system components
7.3 Sensor Module Cabinet-Mounted SMC30
173