3.1.4 Dening the direction of rotation
Direction of rotation
If the built-in torque motor is connected with a phase sequence U-V-W, and is fed from a three-
phase system with a clockwise phase sequence, then the rotor rotates clockwise. You can
identify the direction of rotation by viewing the DE of the built-in torque motor. The cable outlet
of the built-in torque motor is on the opposite side - the NDE.
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Figure3-3 Line of sight for determining the direction of rotation
3.1.5 Ambient conditions for xed operation
Classify the environmental conditions for stationary use at weather-protected locations
according to the standard DIN IEC 60721‑3‑3. The environmental eects and their limit values
are dened in various classes in this standard.
With the exception of environmental parameters "Low air temperature" and "Low air
pressure", the motors satisfy climate class 3K3.
Table 3-2 Ambient conditions are based on climate class 3K3
Ambient parameter Unit Value
a) Low air temperature °C - 5
b) High air temperature °C +40
c) Low relative humidity % 5
d) High relative humidity % 85
e) Low absolute humidity g/m
3
1
f) High absolute humidity g/m
3
25
g) Rate of temperature change
1)
°C/min 0.5
Description
3.1Technical features and ambient conditions
1FW6 built-in torque motors
34 Operating Instructions, 09/2022, A5E52220812B AA
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