YASKAWA NX100 Maintenance Manual

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

YASKAWA NX100 Specifications

General

Manufacturer	YASKAWA
Model	NX100
Operating Temperature	0 to 45°C
Humidity	20 to 80% RH (non-condensing)
Communication Interfaces	Ethernet
Safety Standards	ISO 10218-1
Power Supply	200-230V AC, 50/60Hz
Storage Temperature	60°C