YASKAWA NX100 - 3.8 Open Phase Check

3.8 Open Phase Check
3-7
3.8 Open Phase Check
Open Phase Check List
Check Item Contents
Lead Cable Check Confirm if the lead cable for the power supply is wired as shown
in the following. If the wiring is wrong or broken, repair it.
Input Power Supply
Check
Check the open phase voltage of input power supply with an
electric tester.
(Normal value: 200-220VAC (+10%, -15%))
Circuit Breaker (QF1)
Check
Turn ON the breaker and check the open phase voltage of “2, 4,
6” of the circuit breaker (QF1) with an electric tester. If abnormal,
replace the circuit breaker (QF1).
TR
200/220VAC input
S
Converter
1
2
3
CNP1
(2KM)
Contactor
2
3
1
2
4
6
12
43
56
1X
(1KM)
6
5
(QF1)
Breaker
1
2
3
1
3
5
4X
Power supply contactor unit
Contactor
24
31