Baumuller b maXX BM5800 - Maximum Permissible Speed (Electrical Conditioned)

Configuration
Parameter manual b maXX BM5800
Document No.: 5.16029.03 Baumüller Nürnberg GmbH
84
of 814
3.4
Figure 34: Torque threshold
3.4.2.5 Maximum permissible speed (electrical conditioned)
The overvoltage limit at the converter (U
zk,max
) sets the following limit to the maximum
permissible speed of the synchronous machine.
with:
U
zk,max
= 780 V for BM5200, BM5300, BM5400 and BM5500
K
e(cold)
:K
e
factor for the cold machine in idle speed in V / 1000 min
-1
(independent 
of the value noted in parameter Z107.20–)
Without additional safety precautions the operating of the motor with speed greater than
n
emax
is not permitted.
t [sec ]
|M|
[Nm]
0
1
Status bit
(P138.25 bit 0)
Threshold
M
(P138.24)
act
|M
(P138.21)
|
n
emax
1000
K
e(cold)
-----------------
U
zk,max
2
-----------------
=
DANGER!
Risk of fatal injury from electrical current!
The overvoltage limit at converter is passed over.
Therefore:
m Never operate the motor without additional safety precautions over the electrical
conditioned maximum permissible speed.