Siemens 611 Materials used in the cooling circuits of torque motors, Coolant intake temperature

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

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

Coolant intake temperature

The intake temperatures must be selected in such a way that no condensation forms on the surface of the motor. Condensation can lead to corrosion in the machine.

Tkühl ≥ TUmgeb - 2 K

The motors are designed in accordance with DIN EN 60034–1 for operation at coolant temperatures of up to 35°C (rated value of the coolant intake temperature). If the intake temperature is different, the continuous motor current changes as shown below:

1FW6 Built-in torque motors	51
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7