REXROTH MKD025A-144, Manual

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Synchronous Motors MKD Application Instructions
13-1
DOK-MOTOR*-MKD*******-PR07-EN-P Version7.0 19.05.2004
13 Application Instructions
13.1 Operating Conditions
Setup Height and Ambient Temperature
The performance data specified for the motors apply in case of the
following conditions:
•
Ambient Temperature of 0 ºC up to +45 ºC
•
Setup Height 0 m up to 1000 m above MSL.
If you intend to use motors above these ranges, you must take the
“utilization factors” into consideration. This reduces the performance
data.
t
A
[°C]
1000 3000 2000
0,6
0,8
1
40 45 50 55
0
f
H
h
[m]
0,6
0,8
1
0,4 0,4
f
T
T100
T60
1000 3000
1
2
f
T
t
A
[°C]
0,6
0,8
1
40 45 50 55
0
f
H
0,4
0,6
0,8
1
0,4
ambientMHD.fh7
(1): Utilization depending on the ambient temperature
(2): Utilization depending on the setup height
f
T
: Temperature utilization factor
t
A
: Ambient temperature in degrees Celsius
∆
T60 /
∆
T100: Mode of operation
f
H
: Height utilization factor
h: Setup height in meters
Fig. 13-1: MKD derating (utilization factors)
If either the ambient temperature or the setup height is exceeding the
nominal data:
1. Multiply the torque data specified in the selection data by the
utilization factor.
2. Ensure that the reduced torque data are not exceeded by your
application.
If both the ambient temperature and the setup height are exceeding the
nominal data:
1. Multiply the determined utilization factors f
T
and f
H
by each other.
2. Multiply the value obtained by the motor torque data specified in the
selection data.
3. Ensure that the reduced torque data are not exceeded by your
application.
Nominal data
Exceeding the nominal data
Derating curves