Siemens TV Converter Box 611 User Manual

Technical data and characteristics 

 

14.1 Explanations of the formula abbreviations 

3UHVVXUHGURSDWUHFRPPHQGHGPLQLPXP
YROXPHIORZUDWHDFFRUGLQJWRGDWDVKHHW

˂SLQEDU

9LQOPLQ

 

Figure 14-3  Sample characteristic: "Pressure losses in the main cooler over volume flow rate" 

Data, precision motor cooler 

 

Q

P,MAX

  Maximum heat loss dissipated via the precision cooler when the motor is utilized 

up to the rated torque M

N

 and at the rated temperature T

N

. 

P,MIN

 

Recommended minimum volume flow rate in the precision cooler to achieve a 

minimum temperature increase on the mounting surface of the stator vis-à-vis 

T

VORL

. 

ΔT

p

 

The temperature increase of the coolant between the intake and return flow 

circuit of the precision cooler at operating point Q

P,MAX

 and 

P,MIN

 can be 

estimated using the following formula: 

 

 

 

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

P

 in K 

Volume flow: in m

3

/s 

 

˂7LQ.

&RROLQJPHGLXPWHPSHUDWXUHLQFUHDVHDWUHFRPPHQGHG
PLQLPXPYROXPHIORZUDWHDFFRUGLQJWRGDWDVKHHW

9LQOPLQ

 

Figure 14-4  Sample characteristic "Temperature increase of the coolant between the inlet and return 

flow circuit of the precision cooler" 

 

1FW6 Built-in torque motors 

202

 

Configuration Manual, 05/2009, 6SN1197-0AD00-0BP7