DNH DHVC5000 Series, Use Manual

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2.1.6 Main Circuit Power Supply Connection
频率：Hz
时间：秒
最高频率
A-108
A-107
A-101 A-102 A-103
A-104 A-105
A-106
最低频率
Attention
 Please connect main circuit power supply after confirming the MVC door state is closed. Please do not
open the MVC door during the power on process, otherwise electric shock may occur.
Please always confirm the following items before connecting the main circuit power supply:
Make sure all switches are off
 Whether control power is supplied to the MVC.
 Check the MVC Main Circuit Terminals (A, B, C on the input side, U,V, W on the
output side) are securely connected.
 Check whether the main circuit supply voltage is correct.
 In addition, please check the following items after connecting the main circuit power
supply.
Observe whether input voltage is normal on the screen
Whether the MVC is normal
2.2 MVC Start Process
a. VFD with precharged circuit loop,start process is as below:
 Supply power to main circuit if there are no MVC faults.

MVC enters charging stage.
 After the MVC has charged to certain bus voltage value, the incoming contactor is
closed, and the MVC will be entered into MV charging stage and wait for MVC ready.
 If the MVC is started before it is ready,or the startup process will fail.
b. VFD without precharged circuit loop,start process is as below:
 Supply power to main circuit if there are no MVC faults.
 Close incoming contactor,MVC enters charging stage,wait for VFD ready.
 If the MVC is started before it is ready, or the startup process will fail.
2.2.1 Application Settings
MVC control functions are set according to the actual application requirements of the MVC,
application setting examples are described below.
 To increase the speed of the motor at the rated operating frequency of 50Hz by 10%, the
maximum operating frequency should be set to 60Hz.
 If the MVC output includes switchgear and other equipment, the ‘Output Breaker’
should be set to ‘Yes’ in functional configuration.

When remote forward & reverse rotation is required, remote forward/reverse rotation
should be set to ‘Yes’.