Filter
Top Products
BBV28581 05/2010 93
Configuration Mode - Complete menu (FULL)
Motor thermal protection
Function:
Thermal protection by calculating the I
2
t.
• Naturally-cooled motors:
The tripping curves depend on the motor frequency.
• Force-cooled motors:
Only the 50 Hz tripping curve needs to be considered, regardless of the motor frequency.
Trip time in seconds
Motor current/ItH
CAUTION
RISK OF DAMAGE TO THE MOTOR
The use of external overload protection is required under the following conditions:
• Repowering up the product since there is no motor thermal state memory.
• Running multiple motors
• Running motors rated at less than 0.2 times the nominal drive current
•
Using motor switching
Failure to follow these instructions can result in equipment damage
I-O-
drC-
CtL-
FUN-
FLt-
COM-