Technical data

8
148
Manual – Gear Units and Gearmotors
Torque limit curves with inverter operation
Project Planning for AC Motors with Inverter
f
base
= 120 Hz
(230 V 댴댴/60 Hz)
The following diagram shows the limit curves for operation at f
base
= 120 Hz. The curves
are different for those motors with self-ventilation and those with forced cooling (=
optional forced cooling fan).
1. S1 operation with self-ventilation (= without forced cooling fan)
2. S1 operation with forced cooling (= with forced cooling fan)
3. S1 operation with self-ventilation (+without forced cooling fan)>160M
4. Mechanical limitations for gearmotors
60851AXX
Figure 81: Torque limit curves for f
base
= 120 Hz
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0 500 1000 1500 2000 2500 3000 3500
rpm
T /T
R
4.
2.
1.
1.
3.
230 V /60Hz