Siemens SIMOTICS T-1FW6 Operating Instructions Manual page 113

Risk of electric shock as a result of residual voltages
There is a risk of electric shock if hazardous residual voltages are present at the motor
connections. Even after switching off the power supply, active motor parts can have a charge
exceeding 60 μC. In addition, even after withdrawing the connector 1 s after switching off the
voltage, more than 60 V can be present at the free cable ends.
• Wait for the discharge time to elapse.
Incorrect commutation
Incorrect commutation can result in uncontrolled motor movements.
• When installing and replacing an encoder, ensure the correct commutation setting.
• Only carry out the associated work if you have been appropriately trained.
Fire hazard resulting from hot surfaces
Touching the surfaces of the motors may result in burns. The surface temperature of the motors
can be more than 100 °C (212 °F).
• Ensure that the cooling system is functioning perfectly.
• Never touch the motor during or immediately after use.
• Attach the "Hot Surface Do Not Touch" (W017) warning sign close to the source of danger
NOTICE
Thermal damage to temperature-sensitive parts
Some parts of the electrical motor enclosure can reach temperatures that exceed 100 °C. If
temperature-sensitive parts, for instance electric cables or electronic components, come into
contact with hot surfaces then these parts can be damaged.
• Ensure that no temperature-sensitive parts come into contact with hot surfaces.
1FW6 built-in torque motors
Operating Instructions, 09/2022, A5E52220812B AA
WARNING
WARNING
WARNING
where it can be easily seen.
7.1 Safety instructions for commissioning
Commissioning
111