Siemens TV Converter Box 611 User Manual
Technical data and characteristics
14.1 Explanations of the formula abbreviations
Data, main motor cooler
Q
H,MAX
Maximum heat loss dissipated via the main cooler when the motor is utilized up
to the rated torque M
N
and at the rated temperature T
N
.
H,MIN
Recommended minimum volume flow rate in the main cooler to achieve the rated
torque M
N
.
ΔT
H
The temperature increase of the coolant between the inlet and return flow circuit
of the main cooler at operating point Q
H,MAX
and
H,MIN
can be estimated using
the following formu
la:
Average water density: ρ = 1000 kg/m
3
Average specific thermal capacity of water: c
p
= 4.18 · 10
3
J/(kg K)
Temperature deviation from intake temperature: ΔT
H
in K
Volume flow: in m
3
/s
˂7LQ.
&RROLQJPHGLXPWHPSHUDWXUHLQFUHDVHDWUHFRPPHQGHG
PLQLPXPYROXPHIORZUDWHDFFRUGLQJWRGDWDVKHHW
PLQLPXPYROXPHIORZUDWHDFFRUGLQJWRGDWDVKHHW
9LQOPLQ
Figure 14-2 Sample characteristic "Temperature increase of the coolant between the inlet and return
flow circuit of the main cooler"
Δp
H
Coolant pressure drop between the inlet and return flow circuit of the main cooler
with volume flow
H,MIN
.
The main and precision coolers for motors with integrated cooling are connected
in parallel. The volume flow rates of the main and precision coolers are combined
to create the total volume flow rate; the pressure drop in the main cooler Δp
H
is
the same as that in the precision cooler Δp
P
.
1FW6 Built-in torque motors
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7
Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7
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