
Motor Description
Cooling, 1FK7
1FK7 Synchronous Motors
1-8
Configuration Manual (PFK7), 10/2005 Edition, 6SN1197-0AD06-0BP1
1.4
Cooling, 1FK7
Cooling version
The cooling version is defined at the 9th position of the motor Order No. (MLFB).
1FK7 motors can be supplied in the natural cooling version:
Natural cooling
Operating temperature range: -15 °C to +40 °C (without any restrictions).
The power loss is dissipated through radiation and natural convection which means that ade-
quate heat dissipation must be ensured by suitably mounting the motor (refer to Chapter
"Motor components (options)").
All of the Catalog data refer to an ambient temperature of 40 °C, mounted so that the motors
are not thermally insulated and an installation altitude up to 1000 m above sea level.
If other conditions prevail (ambient temperature > 40 °C or installation altitude > 1000 m
above sea level), the permissible torque/power must be defined using the factors from the
following table (torque/power reduction according to EN 60034-6).
Ambient temperatures and installation altitudes are rounded-off to 5 °C or 500 m respectively.
Table 1-5:
Cooling versions of 1FK7 motors
1FK7
A
↓
Natural cooling
Table 1-6:
Power de-rating as a function of the installation altitude and the ambient temperature
Installation
altitude
above sea
level [m]
Ambient temperature in °C
< 30
30–40
45
50
55
60
1000
1.07
1.00
0.96
0.92
0.87
0.82
1500
1.04
0.97
0.93
0.89
0.84
0.79
2000
1.00
0.94
0.90
0.86
0.82
0.77
2500
0.96
0.90
0.86
0.83
0.78
0.74
3000
0.92
0.86
0.82
0.79
0.75
0.70
3500
0.88
0.82
0.79
0.75
0.71
0.67
4000
0.82
0.77
0.74
0.71
0.67
0.63
Содержание MASTERDRIVES MC 1FK7
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