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If parameter identification is required, please pay attention that the rotating motor may injure
people, otherwise accident may occur!
Do not change the factory settings, otherwise the inverter may be damaged!
6. Running
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Do not approach the equipment when restart function is enabled, otherwise there will be danger
of injury.
Do not touch the fan andthe discharging resistor to check thetemperature, otherwise burning
may occur!
Non-professional person shall not measure the signal of a running inverter, otherwise there will
be danger of injury or damaging the inverter!
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★
Donot let objects fall in a running inverter, otherwise the inverter may be damaged!
Donot start and stop the inverter by on/off of the contactor, otherwise the inverter may be
damaged!
7. Maintenance
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Please do not repair or maintain the inverter with power on, otherwise there will bedanger of
electric shock!
Please repair or maintain the inverter afterconfirming the charge LED turns off, otherwise there
may be human injury causedby the residual voltage of the capacitor!
Only qualified electrical engineer can repair or maintain the inverter,otherwise there will be
danger of human injury or damaging the equipment.
1.2Cautions
1. Check the Insulationof the Motor
When the motor is used for the first time, or reused after storing for a long time, or in regular checkup,
the user must check the insulation of the motor to prevent thepoor insulation of the windings of motor from
damaging the inverter.The motor connection must be divided from the inverter during the insulation check.
It isrecommended to use a 500V Mega-Ohm-Meter to check and the insulation resistance shall not be less
than5M .
2. Thermal Protection of Motor
If the rated capacity of the motor selected is not matching that of the inverter, especially when the rated
power of the inverter is bigger than that of the motor,make sure to adjust the parameters for motor protection
inside the inverter or to install a thermal relay to the motor to guarantee the protection to the motor.
3. Running at FrequencyAbove Rated Frequency
The output frequencyofthis inverter is 0~600Hz. Pleaseconsider the capability of the mechanical
devices when the customer needs the inverter to run at the frequency higher than 50Hz.
4. Motor Heat and Noise
Since the output voltage of the inverter is in PWM wave with some harmonics, the temperature may rise,
thenoiseandvibrationmayincreasecomparedwiththeinverterrunningatmainfrequency.
5. Pressure-sensitive Device or Capacitor atthe Output Side of the Inverter
Because the inverter outputs PWM wave, the capacitor used for improving power factor and pressure-
sensitive resistor used for lightening-proof shouldn't be installed at the output side of the inverter, otherwise
the inverter may have transient over-current and may be damaged.
6. Switches Used at the Input and Output terminal of the Inverter
If the contactor is required to be installed between the inverter and the power supply, it is prohibited to
start or stop the inverter with the contactor. If the user has to use the contactor to start and stop the inverter,
the interval between thestart and stop shallbe less than onehour.Frequent charging and discharging may
reduce the life of the capacitor. If the switches like contactors are connected between the output terminal and
the motor, make sure to start and stop the inverter when the inverter has no output, otherwise themodules in
the inverter may be damaged.
7. Usage Outside the Range of Rated Voltage
The DZB series inverter shall not be used out of the specified range of operation voltage, otherwise the
internal components of the inverter may be damaged. If needed, please use corresponding voltage regulation
device to change the voltage.
8. 3-phase Input Modified Into 2-phase Input
The modification of DZB series inverter from 3-phase input to 2-phase input is not allowed, or fault may
occur.
9. Lightning Strike Protection
There are lightning protection devices inside the inverter, But the user should install other lightning
protection device at the front end of the inverter if lightning strike occurs frequently.
10.Altitude andDeration
When the altitude is higher than 1000m, the cooling effect of inverter is deteriorated becauseof the
rarefaction of air, the deration must be used and please consult our company for detailed technical support.
Ω
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Note
Note
Danger
Danger
DZB Series Chapter 1 Safety and Cautions
DZB Series Chapter 1 Safety and Cautions