Cooling; Cooling Circuits - Siemens SIMOTICS T-1FW6 Operating Instructions Manual

3.4.3

Cooling

3.4.3.1

Cooling circuits

Cooling circuit requirements
Avoid algae growth by using suitable chemical agents and opaque water hoses or tubes.
We recommend that the cooling circuits be designed as closed systems. The maximum
permissible pressure is 10 bar.
NOTICE
Blocked and clogged cooling circuits
Cooling circuits can become blocked and clogged as a result of pollution and longer-term
deposits.
• We recommend that you use a separate cooling circuit to cool the motors.
• If you use the machine cooling circuits to also cool the motors, you must ensure that the
coolant fully complies with the requirements listed in this chapter.
• Also note the maximum non-operational times of cooling circuits corresponding to the
coolant manufacturer's data.
Interconnecting cooling circuits
NOTICE
Leaks associated with rigid connections
Rigid connections between the cooling circuits can lead to problems with leaks.
• Use flexible connections (hoses) when interconnecting cooling circuits.
Note
Connecting cooling circuits in parallel
If you connect the cooling circuits of the stator in series, coolant at different temperatures flows
through the cooling circuits.
• Connect the stator cooling circuits in parallel. This ensures that coolant flows through each
stator with the same intake temperature.
Ensure the same pressure drop and an even flow in every stator.
Influencing variables in this regard are:
• Pipe lengths
• Pipe material
• Pipe cross-section
1FW6 built-in torque motors
Operating Instructions, 09/2022, A5E52220812B AA
Description
3.4 Design
45