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Manual de Funcionamiento del variador de la serie H5000
Chapter 8 Maintenance, Fault Diagnosis and Countermeasure
Generate electromagnetic noise to directly driving motor and
transmit disturbance to power supply, and transmit it to other
device through electronic net. Filter wave may solve the problems.
(3)Inductance coupling
Generate inductance coupling to other connections
The concrete solution for disturbance
(1) Insulation
Separate disturbing resource from those easily affected parts.
Electric welding machine is a strong disturbing resource.
Description of Inverter says that the electric welding machine and
Inverter cannot share the same power supply.
(2) Wave filter
The filter is installed for restraining the disturbing signal to be
transmitted from Inverter to power supply and motor through power
supply wire transmission. The solution is to add filter, reactor or
magnetic loop at the input and output ends.
(3) Shield
Inverter adopts iron casing shield not to let electromagnetic
disturbance leak. The output wire adopts iron tube shield; control
wire adopts shield wire; power supply wire is separated from control
wire, etc.
(4) Grounding
Good grounding may significantly prevent the break of external
disturbance, restrain internal coupling and raise the system
capability of anti-disturbance.
The following illustration is Inverter transmission system
countermeasure of anti-disturbance:
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