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Electronic Motor Overload Protection OL1 (08-05)
When more than one motor is connected to the inverter set the Overload protection level
parameter 02-01 to the total current of all motors and provide external overload relay protection
for each motor.
When using normal power supply switch, motor overload protection 08-05=xxx1x (hot start
protection curve) . Because whenever power is turned off, value of heat will return to default
setting.
08-05 = xx0xx. (Standard motor Overload protection). For standard motors with integrated
cooling fan when running at low speeds the heat dissipation is not very effective, consider Force
vent cooling then set parameter 08-05=xx1xx for the correct overload protection.
08-05 = xxxx1: Enable e
02-01(motor rated current).
Refer to the curve below as an example for overload protection for a standard
motor. (08-05=xx0xx)
08- 06
Operation After Overload Protection is Activated
【0】:Coast-to-Stop After Overload Protection is Activated
Range
【1】:Drive Will Not Trip when Overload Protection is Activated (OL1)
08- 06 = 【0】: On overload condition the inverter coast to stop as the thermal relay detects the
overload and the display will flash OL1.To reset Press the 'Reset' key or use an external reset
to continue to run.
08- 06 = 【1】: On overload condition the inverter continues to run, display flash with OL1, until
the current falls below the overload level.
08- 07
OH over heat Protection
【0】:Auto (Depends on heat sink temp.)
【1】:Operate while in RUN mode
Range
【2】:Always Run
【3】:Disabled
08- 07=【0】: Cooling fan runs as the inverter detects temperature rise.
08- 07=【1】: Cooling fan runs while the inverter is running.
08- 07=【2】: Cooling fan runs continuously.
08- 07=【3】: Cooling fan is Disabled.
lectronic overload protection for motor according to Setting in parameter
Low Speed
High Speed
(<60 Hz)
5.5
3.0
3.5
1.0
100%
150% 200%
(>60 Hz)
Cold Start
Hot Start
Motor Load Current (%)
(02-01 = 100%)
4-63
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