MD280/MD280N User Manual Parameter Description
- 179 -
Speed-up/speed-down
time of the seventh
segment of PLC
Factory default
value
0
0 Speed-up/speed-down 1
F8-27
Setup range
1 Speed-up/speed-down 2
Group F9 Reserved
Group FA Communication Parameters
Refer to MD280F Serial Communication Protocol for details.
Group FB Overload and Protection
Motor overload protection
selection
Factory
default
value
1
0˖ Invalid
FB-00
Setup
range
1˖ Valid
0: Without motor overload
protection function. It is
recommended to install a
thermal relay before the motor.
1: The inverter has overload
protection function for the
motor. Refer to FB-01 and
FB-02 for the protection setup.
Motor overload
protection gain
Factory default
value
1.00
FB-01
Setup range 0.20 to 10.00
In order to effectively protect the motor with different loads, it needs to set
this parameter according to the overload capacity of the motor. The
overload protection on motor forms an inverse time-lag curve. When the
operating current of the motor reaches the current of 220%×FB-01 times
the rated current of motor, it will report motor overload (ERR11) after it lasts
one minute. When the operating current of the motor reaches the current of
150%×FB-01 times the rated current of the motor, it will report motor
overload (ERR11) after it lasts one minute. The motor overload protection
curve is as shown in Fig.6-25:
efesotomasyon.com
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