Siemens SIMOTICS T-1FW6 Configuration Manual page 63

Coolant inlet temperature
NOTICE
Corrosion in the machine
Condensation can lead to corrosion in the machine.
• Choose inlet temperatures that prevent condensation from forming on the surface of the
The rated motor data refer to operation at a coolant inlet temperature of 35 °C. If the
intake temperature is different, then the continuous motor current changes as shown in the
following diagram.
Note
For a cooler intake temperature of < 35 °C, the possible continuous motor current is greater I
I is the current (rms value) of the stator at torque M
0
Larger cable cross-sections may be required. This means that you must take into account the
rated current of the cables.
The following diagram shows the principle dependency of the relevant continuous motor
current on the intake temperature of the cooling water in the main cooler. The rotor losses
are omitted as negligible.
Figure 4-2
Heat-exchanger unit
Use a heat-exchanger unit to ensure an inlet temperature of 35 °C. More than one motor can be
operated on a single heat-exchanger unit. The heat-exchanger units are not included in the
scope of supply.
1FW6 Built-in torque motors
Configuration Manual, 09/2022, A5E52220645B AA
motor. Condensation does not occur if the intake temperature T
ambient temperature - or corresponds to the ambient temperature.
Influence of the coolant inlet temperature
Mechanical properties
is higher than the
VORL
and speed n = 1 r/min.
0
4.1 Cooling
.
0
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