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Questions

  • No : 21996
  • Release Date : 2018/08/22 16:30
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Manual contactor on output side of drive unit

The basic configuration of peripheral devices given in the Instruction Manual of the drive unit contains a low-voltage manual contactor installed on the output side.
What is this device used for?
Give me some example of using this device.
Category : 

Answer

The low-voltage manual contactor is intended to prevent electric shock during inspection and maintenance of the drive unit.
The MELIPM series motor is a synchronous motor with high-performance magnets embedded inside. Thus, high voltage is generated at the motor terminals while the motor is running even after the drive unit power is turned OFF. Before performing inspection or maintenance, this voltage must be shut off to prevent electric shock.

As an example of using this, when inspecting the drive unit used in a situation where the motor is driven by the load (fan, blower, and others), low-voltage manual contactor is contacted to open the contactor to prevent electric shock due to regenerative voltage from the motor.
Product Name
Inverter, magnet motor drive
Series
Magnetic motor drive
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