NOTICE
Motor destroyed as a result of overheating
The motor may overheat without temperature protection and be destroyed.
• Check whether the temperature protection is eective before switching on the DC link
voltage for the rst time!
NOTICE
Demagnetizing the permanent magnets
If, while the torque motor is operational, the rotor exceeds the maximum temperature of
120°C, then there is a risk that the permanent magnets will be demagnetized.
Especially high temperatures are to some extent locally possible as a result of an even current
loading. Operating states with uneven current loading include standstill or operation with
short, cyclic rotary motion.
• When commissioning the system for the rst time, make the appropriate checks so that it
is ensured that the rotor does not exceed the maximum temperature of 120°C.
WARNING
Uncontrolled rotation for inclined and horizontal axes
Torque motors are not self clamping. For inclined and horizontal axes in the no current state,
if the center of gravity lies outside the axis of rotation and there is no weight equalization, then
load can move downwards in an uncontrolled fashion. This can result in injury and material
damage.
• Use a holding brake for inclined and horizontal axes that are not equipped with weight
equalization.
Commissioning
7.1Safety instructions for commissioning
1FW6 built-in torque motors
112 Operating Instructions, 09/2022, A5E52220812B AA
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