Bosch Rexroth IndraDyn S MS2N - De-rating in case of deviating ambient conditions

5.3 De-rating in case of deviating ambient conditions.
Reduce high performance data:
1. Reduce the standstill torque M
0 60K
or M
0 100K
specified in the data sheet,
with the following factors.
We have:
M
0 red
= M
0 60K
× f
TH 60K
M
0 red
= M
0 100K
× f
TH 100K
M
0 red
= M
0 100K
× f
TH W
2. Pan the S1-characteristic curve M
S1
parallel to the speed axis to the junc-
tion of the S1-characteristic curve and to the calculated point M
0 red
on the
torque axis.
M [Nm]
n [1/min]
M
0
M
0 red
M
S1 red
M
S1
Fig. 5-1: Determine S1-characteristic curve M
S1 red
with de-rating factor f
TH
The determined characteristic curve M
S1 red
shows approximately the S1-
characteristic curve with appropriate de-rating.
De-rating factors for self-cooling 60K
Height [m] 40 °C 45 °C 50 °C 55 °C 60 °C
1000 1.00 0.94 0.88 0.83 0.78
1500 0.97 0.91 0.85 0.81 0.76
2000 0.94 0.88 0.83 0.78 0.73
2500 0.90 0.85 0.79 0.75 0.70
3000 0.86 0.81 0.76 0.71 0.67
Tab. 5-2: M
0 60 K
- De-rating Factor f
TH 60K
for MS2N03 … 10 (standard values)
MS2N Synchronous Motors Bosch Rexroth AG
Operating conditions and handling
DOK-MOTOR*-MS2N*******-IT03-EN-P
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