HV100 Series High Performance Current Vector Inverter
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(5) Special options
Terminals PB(+) and P1(+) are terminals for connecting with special optional items. Do not connect machines other
than special options.
(6) Precautions related to reciprocating load
When the inverter is used for reciprocating loads (cranes, elevators, punching machines, washing machines, etc.), if
150% or more of the current flows repeatedly, the service life of IGBT inside the inverter will be shortened due to thermal
fatigue. As a general standard, when the carrier frequency is 4kHz and the peak current is 150%, the starting/stopping
times are about 8 million times.
Especially when low noise is not required, please reduce the carrier frequency. In addition, please reduce the peak
current during reciprocating to less than 150% by reducing the load, prolonging the acceleration and deceleration time, or
increasing the capacity of the inverter by one level (during the trial run for these purposes, please confirm the peak current
during reciprocating and adjust it as needed). In addition, when used in cranes, it is suggested to make the following
choices to ensure the motor torque and reduce the current of the inverter, because the starting/stopping action during JOG
is fast. · The capacity of the inverter should ensure that its peak current is lower than 150%. The capacity of inverter should
be more than 1 level larger than that of motor.
4.5.2
Matters needing attention in motor use
(1) It is used for existing standard motors
Low speed domain
Compared with the standard motor driven by commercial power supply, the loss caused by using inverter will increase
somewhat. In the low speed range, the cooling effect will deteriorate and the temperature of the motor will increase.
Therefore, in the low speed range, please reduce the load torque of motor. The allowable load characteristics of our
standard motor are shown in the figure. In addition, when 100% continuous torque is required in low speed range, please
discuss whether to use the special motor for inverter.
Frequency (Hz)
Allowable load characteristics of our standard motor
(2) Matters needing attention for special motors
The rated current of the pole-changing motor is different from that of the standard motor. Please confirm the maximum
current of the motor and select the corresponding inverter. Be sure to switch the number of poles after the motor stops. If
switching is performed during rotation, the regeneration overvoltage or overcurrent protection circuit will act and the free
running of the motor will stop.
Motor with brake
When using inverter to drive motor with brake, if the brake circuit is directly connected to the output side of inverter, the
brake will not open due to the low voltage during starting. Please use the motor with brake with independent brake power
supply, and connect the brake power supply to the power supply side of the inverter. In general, when using a motor with a
brake, the noise in the low speed range may become larger.
(3) Power transmission structure (reducer, belt, chain, etc.)
When the gearbox, gearbox and reducer with oil lubrication mode are used in the power transmission system, the oil
lubrication effect will become worse if they only run continuously in the low speed range, so please pay attention. In
addition, when running at high speed above 60Hz, problems such as noise of power transmission structure, service life,
strength caused by centrifugal force, etc. will occur, so please pay full attention to it.
25%ED (or 15 minutes)
40%ED (or 20 minutes)
60%ED (or 40 minutes)
To
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Continuous