Siemens Simotics M-1FE1 Series, Руководство по настройке

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Motor components, characteristics and options
4.1 Motor components
SIMOTICS M-1FE1 synchronous built-in motors
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Configuration Manual, 09/2019, A5E47872980B AA
Pressure drop in the motor
Observe the nominal coolant flows specified in the following table to ensure that the
motor is adequately cooled.
Table 4- 7 Approximate pressure drop at the nominal coolant flow rate
Motor type Volume flow
in l/min
Pressure drop
in MPa
1FE104 ☐ to 1FE109 ☐ 8 0.03
1FE110 ☐ to 1FE112 ☐ 10 0.03 … 0.12
1FE114 ☐ 12 0.03 … 0.07
Pressure equalization
If various components are connected up in the cooling circuit, it may be necessary to
provide pressure equalization.
Reactor elements are installed at the coolant outlet of the motor or the relevant
components.
Preventing cavitation
NOTICE
Motor damage caused by cavitation and abrasion
An excessive pressure drop at the motor can cause motor damage as the result of
cavitation and/or abrasion.
• Operate the motor so that the pressure drop across the motor in continuous
operation does not exceed 0.2 MPa.
Connecting motors in series
For the following reasons, connecting motors in series can be recommended only
conditionally:
● The required flow rates of the motors must be approximately the same
(< a factor of 2)
● An increase in the coolant temperature can result in derating the second or third
motor if the maximum coolant inlet temperature is exceeded; see diagram (Influence
of the coolant inlet temperature on M
N
as a percent"