Product Description
Regulating output frequency of inverter to change the speed of motor
BZ300 series inverter is a versatile general-purpose inverters which was developed for the
needs of a wide range of generic customers through a market research by Yueqing Bangzhao electric Co., Ltd.The whole series of BZ300 inverter has independent ventilation,
which can be installed outside or inside the radiator cabinet;perfect user password
protection ,directly input DC bus terminal and DC powered fan that enable the non-standard products to be compatible with the DC bus running mode that makes the complex application debugging and operation was very easy, reliable, safe.
1.2.1Motor insulation inspection
The motor insulation must be inspected when motor for the first time used or unused for a
long time, in case the effectiveness of the winding insulationto damage the inverter. Motor
attachment must separate from inverter when insulated inspection, suggested the 500 V voltage
type megameter, guarantee the insulation resistance not less than 5 M .
1.2.2Motor of the thermal protection
If choose motor and converter does not match the rated capacity, especially the rated power
greater than motor inverter power rating, be sure to adjust the inverter motor protection in related
parameters value or in motor with thermal relay to before to motor protection.
1.2.3power frequency above operation
This inverter can provide 0 Hz ~ 600 Hz output frequency. If the customer needs to be in
frequency 50 Hz above operation, please consider the strength of the mechanical device.
1.2.4The vibration of mechanical device
Inverter may meet load machinery's
mechanical resonance point
in some output
frequency place,it can be set hopping frequency and parameters within the inverter to avoid.
1.2.5 Motor fever and noise
Because
the inverter's output voltage is PWM waves, contain certain harmonic , therefore,
the rise of temperature of the motor, noise and vibration frequency will run little increase.
1.2.6 When therer are pressure sensitive devices or capacitance to improve the power
factor on the output side
Inverter is PWM waves, the output side such as the capacitor with improving electrical
power factor or the lightning protection with pressure sensitive resistance, it easy cause
instantaneous inverter over current even damage inverter, please do not use.
1.2.7The input and output terminal contactor of switching element etc
BZ300
User's manual
If contactor is between the power and inverter input side , it is not allowed to use this
contact device control inverter to the rev. Stop. It need to use this contractor to control the
inverter rev. Stopping , interval an hour at least. Frequent charge-discharge is easily reduce the
inverter of the capacito the service lifer. If the output and motor with contact between the switch
device, shall ensure that no output inverter in the hige operation, or it easily cause inverter
module damaged.
1.2.8 Rated voltage value the use of outside
Not suitable for user manual in the provisions of the voltage range allowed outside use DR
series inverter, it easily cause the inverter device damaged . If it necessary, please use the
corresponding or step down device to deal with variable pressure
1.2.9 Change the three-phase input into the two phase input
Don't change the three-phase inverter into the two phase in DR series. Otherwise it will
lead to malfunction or damage the inverter
1.2.10 Lightning shock protection
This series of inverter is equipped with a lightning over current protection device,
having
certain ability of self-protection for indirect lightning.In the frequent lightning place, please
install the protective devices at the front end of the inverter.
1.2.11 The altitude and derating using
At an altitude of more than 1000m area, because thin air cause the inverter cooling effect
becoming poor,so it is necessary to derate use. Please consult our company for technique in this
situation.
1.2.12 Some special usage
If the customer was using when required to book recommendations provided by methods
other than when wiring diagram, such as dc bus, etc, please consult our company
1.2.13Converter scrap note
The main loop of the electrolytic capacitor and printed circuit boards electrolytic capacitors
on incineration can explode. Plastic incinerator will produce toxic gases. Please as industrial
waste processing.
1.2.14 Adapter motor
1)Standard adapter electric quadrupole squirrel-cage asynchronous induction motor. If the
motor please press the motor rated current selection of inverter. If you need to drive permanent
magnet synchronous motor of the occasion, please consult our company.
2)A variable frequency motor cooling fan and rotor shaft is coaxially connected, speed is
reduced when the fan cooling effect is reduced, therefore, the motor overheat the occasion
should be equipped with strong exhaust fan or replacement for variable frequency motor.
3)Converter has a built-in adaptation motor standard parameters, according to the actual
situation it is necessary to motor parameter self identification or modify the default values so as
to accord with the actual value, otherwise it will affect the running effect and protection
performance.
4)Because the cable or motor internal short circuit can cause inverter alarm, even frying
machine. Therefore, please first for the initial installation of the motor and cable insulation short
test, routine maintenance is often required for this test. Note, doing this test must be tested part
of inverter and disconnect all.
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