Siemens S120 configurationmanual Cooling circuits, Cooling circuit requirements

Motor components of the built-in motor and options 3.3 Cooling

3.3.1Cooling circuits

Cooling circuit requirements

We recommend that the cooling circuits be designed as closed systems, to prevent the growth of algae. The maximum permissible pressure is 10 bar.

Note

We do not recommend that the cooling circuits of machines are also used to cool the motors: Due to accumulated dirt and long-term deposits, blockage may result! This especially applies to cooling-lubricating medium circuits.

If the cooling circuits of the machines are also used to cool the motors, then they must fulfill all of the requirements listed here. Also note the demands on the cooling medium as well as the maximum standstill times of cooling circuits according to the specifications of the cooling medium manufacturer!

Materials used in the cooling circuits of torque motors

Table 3- 4 Materials in the cooling circuits of torque motors (not including the material used for the connections)

Cooling jacket		Integrated cooling (main		Integrated cooling (precision		Cooling connection adapter
for		cooler) for		cooler) for		for
1FW609, 1FW613 and		1FW616 to 1FW629		1FW616 to 1FW629		1FW616 to 1FW629
1FW615
1FW609, 1FW613:		∙	X6CrNiTi18-10	∙	X6CrNiTi18-10	∙	CW617N
∙	EN AW-5083		(EN 10088)		(EN 10088)		(DIN EN 12165)
	(EN 573-3)	∙	SF-Cu	∙	SF-Cu	∙	Viton® (FPM) gasket
∙	Viton® (FPM) gasket		(DIN 17671)		(DIN 17671)
		∙	CW617N	∙	CW617N
1FW615:			(DIN EN 12165)		(DIN EN 12165)
		∙	Viton® (FPM) gasket	∙	Viton® (FPM) gasket
∙	S355J2G3
		∙	Silicon hose	∙	Silicon hose
	(EN 10025)
		∙	Ag 102
∙	Viton® (FPM) gasket
			(EN 1045) +
			welding flux EN 1045-
			FH10

Calculating the thermal power that can be dissipated by the cooler

Average density of the coolant:		ρ	in	kg/m3
Average specific heat capacity of the coolant:		cp	in	J/(kg K)
Temperature deviation vis-à-vis the inlet temperature:		ΔT	in	K
Volume flow rate:			in	m3/s
50				1FW6 Built-in torque motors
	Configuration Manual, 05/2009, 6SN1197-0AE00-0BP3