Connection Methods; Commissioning - Siemens SINAMICS S120 Equipment Manual
Chassis liquid cooled power units
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Cooling circuit and coolant properties
8.6 Connection methods
8.6
Connection methods
The electrical connections on the SINAMICS S120 Liquid Cooled units must be made with
cables of the cross-section stipulated in the technical specifications for the relevant device.
The coolant connection is made using 3/4'' couplings.
The supply and return connections on the SINAMICS devices must be made with flexible,
non-conductive hose (see Section "Materials") so as to eliminate the risk of electrochemical
corrosion, to reduce transfer of vibration and to dampen pressure transients in the coolant.
The hose should be about 1.5 m in length (total of supply and return lines).
The coolant hoses should be connected before the units are mounted.
8.7
Commissioning
Commissioning the cooling circuit
Once the modules have been installed in the plant, the coolant circuit must be commissioned
before the electrical systems.
Venting the heat sink
In some devices the heat sink has to be vented when it is being filled, depending on the
device type and the frame size.
● It is not necessary to vent the heat sinks on Power Modules of frame sizes FL and GL,
● The heat sinks on Basic Line Modules, frame sizes FBL, GBL, Active Line Modules,
Venting the heat sink with removal of the front electronic fan
On the following Basic Line Modules the front electronic fan must be removed in order to
operate the venting lever:
● 6SL3335-1TE41-2AAx (380 - 480 V, 1220 A, 600 kW)
● 6SL3335-1TE41-7AAx (380 - 480 V, 1730 A, 830 kW)
● 6SL3335-1TG41-3AAx (500 - 690 V, 1300 A, 1100 kW)
● 6SL3335-1TG41-7AAx (500 - 690 V, 1650 A, 1370 kW)
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Active Line Modules of frame size GXL and Motor Modules of frame size FXL and GXL
before they are filled for the first time.
frame sizes HXL, JXL and Motor Modules, frames sizes HXL, JXL must be vented before
they are filled for the first time.
– For this purpose, the units are fitted with a vent valve at the top and a vent hose at the
bottom. The air and/or coolant can be bled out of the unit via this hose and collected
underneath so that it cannot leak into the module.
– A stopper is inserted in the lower end of the vent hose at the factory. This must be
removed before the heat sink is vented and inserted again afterwards.
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
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