Self-ventilated motors, Self−ventilated motors, Safety instructions – Lenze ECSEAxxx User Manual
Page 80: Warnings
Safety instructions
Thermal motor monitoring
Self−ventilated motors
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80
EDKCSEX064 DE/EN/FR 6.0
2.2.2
Self−ventilated motors
Due to the construction, self−ventilated standard motors are exposed to an
increased heat generation in the lower speed range compared to forced
ventilated motors.
J
Warnings!
For complying with the UL 508C standard, you have to set the
speed−dependent evaluation of the permissible torque via code
C0129/x.
Parameter setting
The following codes can be set for I
2
x t monitoring:
Code
Meaning
Value range
Lenze setting
C0066
Display of the I
2
x t load of the motor
0 ... 250 %
−
C0120
Threshold: Triggering of error "OC6"
0 ... 120 %
0 %
C0127
Threshold: Triggering of error "OC8"
0 ... 120 %
0 %
C0128
Thermal motor time constant
0.1 ... 50.0 min
5.0 min
C0606
Response to error "OC8"
TRIP, warning, off
Warning
C0129/1
S1 torque characteristic I
1
/I
rated
10 ... 200 %
100 %
C0129/2
S1 torque characteristics n
2
/n
rated
10 ... 200 %
40 %