Inovance NICE1000 - General Precautions

Page 5 of 49
Version : 1.4
Date of issue : 03-07-14
equipment periodically. Only timely troubleshooting can ensure the safety
of passengers.
Disposal
CAUTION
The packaging materials, screws and terminal blocks can be re-used and
it is suggested that you keep them well for future use.
WARNING
The electrolytic capacitors on the main circuits and PCB may explode
when they are burnt. Poisonous gas is generated when the plastic parts are
burnt. Treat them as ordinary industrial waste.
1.2 General Precautions
1. Motor insulation test
Perform the insulation test when the motor is used for the first time, or when it is reused after being stored for a
long time, or in a regular check-up, in order to prevent the poor insulation of motor windings from damaging
the controller. The motor must be disconnected from the controller during the insulation test. A 500-V mega-
Ohm meter is recommended for the test. Ensure that the insulation resistance is not less than 5 MΩ.
2. Thermal protection of the motor
If the rated capacity of the motor selected does not match that of the controller, especially when the rated power
of the controller is greater than that of the motor, adjust the motor protection parameters on the operation panel
of the controller or install a thermal relay for the motor circuit for protection.
3. Motor heat and noise
The output of the controller is pulse width modulation (PWM) wave with certain harmonic wave, and therefore,
the motor temperature rise, noise, and vibration are slightly greater than those at running with the power
frequency (50 Hz).
4. 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.
5. Contactor on the input and output sides of the controller
When a contactor is installed between the input side of the controller and the power supply, the controller must
not be started or stopped by opening or closing the contactor. When a contactor is installed between the output
side of the controller and the motor, do not open or close the contactor when the controller has output.
Otherwise, modules inside the controller may be damaged.
6. Use outside the rated voltage
The controller must not be used outside the allowable voltage range specified in this manual. Otherwise,
components inside the controller may be damaged. If required, use a corresponding voltage step-up or step-
down device.