Siemens SINUMERIK 840Di Function Manual page 247

Fig. 2-5
1:
n
red
n
max
M
max
M
red
Simulation of torque characteristic
For the purpose of simulating the torque characteristic of the motor characteristic curve, the
machine data:
MD35242 $MA_ACCEL_REDUCTION_TYPE =
can be used to select various types of characteristic curve:
0
1
2
Acceleration (B2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Torque characteristic curve of a motor with torque characteristic that is highly dependent
upon speed
Torque decrease zone
: Speed above which reduced torque has to be assumed
: Maximum speed
: Max. torque
: Torque at n (corresponds to creep acceleration)
max
= Constant characteristic
= Hyperbolic characteristic
= Linear characteristic
2.18 Knee-shaped acceleration characteristic curve
characteristic
Detailed Description
2-35