User manual

Chapter 5 Parameter Introductions
1 min
Time
Output current
100% 200%
50% 100%
Motor overload
protective
coefficient
Fig. 5-13-1 Motor overload protection curve
◆Motor overload protection coefficient calculates:
Motor overload protection coefficient
=the max allowed current of load/rated output current of inverter*100%
Generally, the Max load current is the motor rated current. If the motor heat resistance
is better, the value can be increased properly on the basis (for example, 10%). On the
contrary, if the motor has worse heat-resistance, the value should be decreased some.
 Tips:
If the motor rated current does not match that of the inverter, motor overload protection
can be realized by setting Pd.01. If overload protection happened, the inverter will
stops PWM output and display OL1 .
Pd.02 Pre-overload detection level
Range: 20.0～200.0%【160.0%】
Pd.03 Pre-overload detection time
Range: 0.0～60.0s【60.0s】
Note:
◆Pd.02 defines the current threshold for overload pre-alarm protection. The setting
range is a percentage value of rated current.
◆Pd.03 defines the time during which the inverter current exceeds Pd.02. If the
pre-overload status remains after this period, the inverter will output pre-alarm signal
(OLP2).
◆Overload pre-alarm take effect means that the inverter current has exceeded Pd.02 and
the Pre-overload time exceeded Pd.03.
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