Coolants - Siemens Simotics T-1FW6 Configuration Manual

If you cannot determine the actual rms power loss P
rated power losses P
motors are listed in the data sheets. Dimension the cooling system based on the sum of the
rated power losses determined P
If the sum of the rated power losses P
this will lead to an overdimensioning of the cooling system.
The cooling system must be sufficiently powerful to ensure the required coolant pressure
even at the maximum volume flow rate.
3.1.2

Coolants

Provision of the coolant
The customer must provide the coolant. The motors are designed for use with an anti-
corrosion protection agent added to the water.
Note
Power derating when using oil as coolant
If you are using oil as coolant, then this can reduce the power loss dissipated by the cooler.
Appropriately reduce the motor power. Please contact your local Siemens office if you have
any questions.
Reason for the use of water with an anti-corrosion agent
The use of untreated water may lead to considerable damage and malfunctions due to water
hardness deposits, the formation of algae and slime, as well as corrosion, for example:
• Worsening of the heat transfer
• Higher pressure losses due to reductions in cross-sectional area
• Blockage of nozzles, valves, heat exchangers and cooling ducts
General requirements placed on the cooling medium
The cooling medium must be pre-cleaned or filtered in order to prevent the cooling circuit
from becoming blocked. The formation of ice is not permitted!
Note
The maximum permissible size for particles in the cooling medium is 100 μm.
1FW6 external rotor built-in torque motors
Configuration Manual, 12/2020, A5E50516483B AA
of all the motors to be used. The rated power losses P
V,N
.
V,N
is greater than the actual rms power loss P
V,N
Mechanical properties
then alternatively you can add the
V
3.1 Cooling
of the
V,N
, then
V
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