1. Precautions for choosing a communication motor driver
When using a high-capacity current transformer (600kVA or more) and a phase capacitor, the surge current on the input side of the power supply is too large, which may destroy the input side of the AC motor driver, so it is necessary to install a communication reactor on the input side to reduce the current and improve the input power.
When driving a special motor or a communication motor driver to drive multiple motors, the total additional current of the motor should not exceed the additional current of the communication motor driver, and the choice of communication motor driver should be very careful.
When the AC motor driver drives the motor, the starting, acceleration and deceleration characteristics of the Delta inverter are constrained by the additional current of the AC motor drive, and the starting torque is small (6 times the starting current when the commercial power supply is started directly, and the starting current cannot exceed 2 times when the AC motor driver is started), so in places that require high starting torque (such as elevators, mixers, east-west machines, etc.), it is necessary to increase the application of the communication motor driver by 1 or 2 levels, (*** The ideal way is to increase the motor and the communication motor driver by one level together).
It is necessary to consider the stopping method of the motor and mechanical equipment in the event of an abnormal fault stop output of the communication motor driver, and if it is necessary to stop suddenly, it is necessary to add mechanical brakes or mechanical brake equipment.
2. Precautions for parameter setting
Since the speed of the digital operator can be set up to 400Hz, the output frequency can be constrained by using the speed cap function when there is a high-speed constraint place. If the DC braking voltage and braking time value are set too high, the motor may overheat.
The acceleration and deceleration time of the motor is determined by the additional torque of the motor, the torque required by the load, the inertia of the load, etc.
If the acceleration and deceleration is necessary to be very fast, and the load inertia is large, and the communication motor driver cannot accelerate or stop the motor at the required moment, it is necessary to apply an additional braking resistor (which can only shorten the deceleration time) or increase the motor and communication motor driver by one level.
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Myth: The capacity selection of the inverter is based on the rated power of the motor
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Troubleshooting of small electromagnetic relay cores - Delta
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How to use a PC to control Delta's inverter
Problem Description:
How does Delta inverter use a PC to control it?
Solution(s):
The communication interface of Delta's inverter is based on RS485 and the ModBus communication pattern commonly used in the general industry for material handing.
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Precautions for the use of Delta inverter MS300 series
Before operating the MS300 series products, please read and pay attention to the relevant safety information to ensure your own safety and product safety.
When operating the wiring and installing the inverter, it is necessary to confirm that the power supply is closed.
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The reason why the circuit breakers of multiple stages trip together is Delta
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Inverter performance test method - Delta
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Solution: Delta's inverter operation error
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VX Series Power Supplies.
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