6motor interface – Lenze E94AxPExxxx User Manual
Page 269
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
269
6
Motor interface
6.9
Monitoring
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Test step 4
• After mains switching and an overload of the rated motor current (
), the I²xt motor
monitoring has to be tripped faster than before mains switching with the same overload.
•
From software version V5.0:
Initial value of the thermal model of the I²xt motor monitoring:
> 0 %.
Example for a UL 508C-compliant total parameterisation of the I²xt motor monitoring of the device:
Code
Setting
Info
100 %
Switch-off threshold of motor overload protection (I²xt)
11.8 min
Thermal time constant - laminated core/housing
0 %
Percentage of the winding in the final temperature
0 %
Speed = 0 (standstill)
< 100 %
Permissible motor torque at standstill
20 Hz * (
Speed n
2
from which on the torque must be reduced
100 %
Permissible motor torque at speed n
2
(torque reduction)
100 %
Rated speed
100 %
Permissible motor torque at rated speed
100 %
Rated speed
100 %
Speed above rated speed
> 0 %
Initial value of the thermal model of the I²xt motor
monitoring