EMC
231
V260 Series High Performance Closed-Loop Vector Inverter User manual
◆
Carrier frequency
◆
Type and length of motor cable
◆
EMI filter
6
)
When leakage current of inverter cause leakage circuit breaker work:
◆
Improve sensitivity of the current value of leakage circuit breaker
◆
Replace a new leakage circuit breaker with high frequency inhibition function
◆
Reduce carrier frequency
◆
Shorten length of output cable
◆
Install a leakage suppression equipment
12.8 COMMON EMC INTERFERENCE PROBLEM AND
SOLUTION
Frequency inverter is strong anti-interference equipment, when there is problem in
wiring and ground connection, still maybe will comes out interference. When it happens,
we have below solutions:
Interference Type
Solution
Leakage protection
switch trip
◆
Motor case connect the PE of frequency inverter
;
◆
Frequency inverter PE connect the power system PE
;
◆
Add Safety capacitance box on input power wire
;
◆
Add magnetic loops on input power wire
;
Running Drive leads
Interference
◆
Motor case connect the PE of frequency inverter
;;
◆
Frequency inverter PE connect the power system PE
;
◆
Add Safety capacitance box and magnetic loops on input
power wire
;
◆
Add Capacitor or magnetic loops on the interferenced port
;
◆
Share the ground wire between the equipments
;
Communication
Interference
◆
Motor case connect the PE of frequency inverter
;;
◆
Frequency inverter PE connect the power system PE
;
◆
Add Safety capacitance box and magnetic loops on input
power wire
;
◆
Add matched resistor On communication wire and load end
;
◆
Add communication common GND on communication wire
;
◆
communication wire use shielded wire, shields connect
public Communication
;
I/O Interference
◆
Add capacitor filter on low-speed DI, maximum 0.1uF
;
◆
Add capacitor filter on AI, maximum
0.22uF
;
◆
Analog signal use shielded wire, shields connect PE of
frequency inverter.
Remark
:
If you have any other EMC interference questions, please contact the
manufacturer.