Mechanical Properties; Cooling; Cooling Circuit - Siemens SIMOTICS T-1FW3 Configuration Manual

Mechanical properties

3.1

Cooling

Defective work on the cooling circuit
Defective work on the cooling circuit can cause injury and/or damage to property.
• Only qualified personnel may assemble, install, and commission the cooling circuit.
• Perform installation or service work on the cooling circuit only when the system is de-
Note

Cooling circuit

Only closed and semi-open cooling circuits are permissible for motors.
3.1.1 Cooling circuit
The electrochemical processes that take place in a cooling system must be minimized by
choosing the right materials. For this reason, mixed installations, i.e. a combination of
different materials, such as copper, brass, iron, or halogenated plastic (PVC hoses and
seals), should not be used or limited to the absolutely essential minimum.
A differentiation is made between 3 different cooling circuits:
● Closed cooling circuit
● Semi-open cooling circuit
● Open cooling circuit
Table 3- 1
Definition
Closed cooling circuit
Semi-open cooling circuit Oxygen can only enter the cooling system through the pressure equaliza-
Open cooling circuit
(tower system)
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
WARNING
energized.
Description of the various cooling circuits
Description
The pressure equalizing tank is closed (oxygen cannot enter the system)
and has a pressure relief valve. The cooling water is only routed in the
motors and converters as well as the components that have to be cooled.
tion tank, otherwise the same as "closed cooling circuit".
The cooling water is cooled in a tower. In this case, there is intensive
oxygen contact.
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