NICE3000
new
User Manual
1 Safety Instructions
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6. Voltage-sensitive device or capacitor on the output side of the controller
The controller outputs PWM waves, and therefore, do not install the capacitor for improving power
factor or lightning protection voltage-sensitive resistor on the output side of the controller. Otherwise,
the controller may suffer transient overcurrent or even be damaged.
U
V
W
Capacitor or varistor
NICE3000
new
controller
M
7. Switch (contactor) on the input and output sides of the controller
If a contactor is installed between the power supply and the input side of the controller, DO NOT
use it to start or stop the controller. However, if there is a need to use the contactor to start or to
stop the controller, make sure the time interval between switching is at least one hour. If the interval
between switching is shorter than one hour, this will reduce the service life of the capacitor inside the
controller.
If a switch such as contactor is installed between the output side of the controller and the motor,
operate the switch only when the controller has no output. Otherwise, modules inside the controller
may be damaged.
R
S
T
U
V
W
380 VAC
50/60 Hz
Input contactor
Output contactor
or other switch
Do not start or stop the controller by
using the contactor.
If such operations are required, ensure
the time interval is larger than one hour.
Operate the switch ONLY when
the controller has no output.
NICE3000
new
controller
M
8. Use outside the rated voltage
The controller must not be used outside the allowable voltage range speciîš¿ed in this manual.
Otherwise, components inside the controller may be damaged. If required, use a corresponding
voltage step-up or step-down device to match the power voltage to the rated voltage range for the
controller.
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