Lenze ECSDAxxx - Manual (Page 85)

Safety instructions
Thermal motor monitoring
Self−ventilated motors
2
l
85 EDKCSDX064 DE/EN/FR 3.0
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 %