5.7 L: Protection Functions n L1-02: Motor Overload Protection Time Sets the time it takes the drive to detect motor overheat due to overload. This setting rarely requires adjustment, but should correlate with the motor overload tolerance protection time for performing a hot start. • Defaulted to operate with an allowance of 150% overload operation for one minute. • Figure 5.34 shows an example of the electrothermal protection operation time using a general-purpose motor operating at 60 Hz with L1-02 set to one minute.
Operation time (minutes) 10 7 3 1 Cold start 0.4 Hot start 0.1 Motor current (%) 0 100 150 200 E2-01 = 100% m o t o r c u r r e n t Figure 5.34 Motor Protection Operation Time n L1-13: Continuous Overload Detection Selection Parameter Details Determines whether or not to hold the current value of the electrothermal motor protection (L1-01) when the power supply is interrupted. Setting 0: Disabled 5 Setting 1: Enabled u L2: Momentary Power Loss Ride-Thru n L2-01: Momentary Power Loss Operation Selection When a momentary power loss occurs the drive can be set to automatically return to the operation it was performing when the power went out based on certain conditions. Setting 0:
Disabled (default) If power is not restored within 15 ms, a Uv1 fault will result and the drive will stop the motor. SIEP C710606 33A OYMC AC Drive – J1000 User Manual 103 Overload Tolerance Overload Characteristics Cooling Ability 150 Rated Speed=100% Speed 60 sec. 100 (%) Torque 55 50 Continuous A D B 0110 100120 167 200 (60 Hz) Speed (%) Motor is designed to effectively cool itself even at low speeds (as lower as 6 Hz). Continuous operation with 100% load from 6 Hz to 50/60 Hz. No. Name Setting Range Default L1-02 Motor Overload Protection Time 0.1 to 5.0 min 1.0 min No. Name Setting Range Default L1-13 Continuous Electronic Thermal Overload Protection Selection 0 or 1 1 No.
Name Setting Range Default L2-01 Momentary Power Loss Operation Selection 0 to 2 0