IMO SD1 Series - Page 53

SD1 Series Inverters Function Parameters
-48-
Function
code
Name Description Default Modify
coefficient 4 for
the iron core of
async-motor 1
P02.26
Motor overload
protection
selection
0: No protection
1: Common motor (with low-speed
compensation). Because the heat-releasing
effect of the common motors will be weakened,
the corresponding electric heat protection will be
adjusted properly. The low-speed compensation
characteristic mentioned here means reducing
the threshold of the overload protection of the
motor whose running frequency is below 30Hz.
2: Frequency conversion motor (without
low-speed compensation). Because the
heat-releasing of the specific motors won't be
impacted by the rotation speed, it is not
necessary to adjust the protection value during
low-speed running.
2 ◎
P02.27
Motor overload
protection
coefficient
Times of motor overload M = Iout/(In*K)
In is the rated current of the motor, Iout is the
output current of the inverter
and K is the motor
protection coefficient.
So, the bigger the value of K is, the smaller the
value of M is. When M=116%, protection is
performed after motor overload lasts fo
r 1 hour;
when M=150%, protection is performed after
motor overload lasts for 12 minutes; when
M=180%, protection is performed after motor
overload lasts for 5 minutes; when M=200%,
protection is performed after motor overload lasts
for 60 seconds; and when M≥ 400%, protection
is performed immediately.
100.0% ○