Technical data and characteristics
6.1 Explanations of the formula abbreviations
1FW6 Built-in torque motors
160 Configuration Manual, 07/2017, 6SN1197-0AE00-0BP9
Figure 6-3 Sample characteristic: "Pressure losses in the main cooler over volume flow rate"
Data for precision motor cooler
P,MAX
Maximum heat loss dissipated by the precision cooler when the motor is utilized up
to its rated torque M
N
and at rated temperature T
N
P,MIN
Recommended minimum volume flow rate in the precision cooler to achieve a m
in-
imum temperature increase on the mounting sur
face of the stator with respect to
p
The temperature increase of the cooling medium between the inlet and return flow
circuit of the precision cooler at the operating point Q
P,MAX
and
P,MIN
can be esti-
mated with the following formula:
of water: ρ = 1000 kg/m
3
average specific thermal capacity of water: c
p
= 4.18 · 10
3
J/(kg K)
Temperature change with respect to the intake temperature: ΔT
P
in K
3
Figure 6-4 Sample characteristic "Temperature increase of the coolant between the inlet and return
flow circuit of the precision cooler"
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