35
7.6 MOTOR OVERLOAD (I
2
t) with RMS CURRENT
LIMIT (CL)
*
Sets the current limit (overload), which limits the maximum
current to the motor, preventing motor burnout and eliminating
nuisance trips. The CL Trimpot is factory set to 160% of the drive
rated current. To increase the current limit, rotate the CL Trimpot
clockwise. To decrease the current limit, rotate the CL Trimpot
counterclockwise. See Figure 7-6.
Figure 7-6 Current Limit Trimpot Range
Figure 7-7 shows the I
2
t Trip Time vs. Motor Current. Also see
Section 5.2.
*UL approved as an electronic overload protector for motors.
CAUTION!
If the current limit is adjusted above 160% of the motor nameplate
rating, this can cause overheating of the motor.
CAUTION!
Do not leave the motor in a locked rotor condition for more than a
few seconds since damage may occur.
Summary of Contents for NEMA 1 / IP40
Page 18: ...18 Figure 2 3 Drive Layout...