Baldor ID5601-EO, Инструкция по установке и эксплуатации

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5.2 ELECTRONIC MOTOR OVERLOAD
PROTECTION
The drive contains Modified I
2
t Overload Protection.* Part of this
function consists of a Current Limit (CL) circuit, which limits the
drive current to a factory preset level of 160% of the rated drive
current. The CL Trimpot is used to recalibrate the drive current
from 60% through 200%. The Power Start™ circuit provides an
overshoot function that allows most motors to develop more than
200% of starting torque.
Standard I
2
t is undesirable because it causes nuisance tripping. It
allows a very high motor current to develop and will turn the drive
off after a short period of time. The RMS Current Limit Circuit
avoids this nuisance tripping while providing maximum motor
protection.
If the motor is overloaded to 120% of full load (75% of the
CL setting), the I
2
t Timer starts. If the motor continues to be
overloaded at the 120% level, the timer will shut down the drive
after 30 minutes. If the motor is overloaded to 160% of full load,
the drive will trip in 6 seconds. See Section 7.6.
*UL approved as an overload protector for motors.