2-26
006 F703
Alarm
Logic
The waveform of power supply is abnormal, therefore phase is not detected correctly.
Possible
Causes
Abnormal waveform of power supply
Trouble
Shooting
Check power supply equipment or facility and provide power supply with correct phase wave
form
Controller
Action
F703 Unit stop
007 F705
Alarm
Logic
One of R, S, T phase is open (F701 is also generated when S phase is open.)
Possible
Causes
1. Abnormal power supply (Open phase)
2. Broken wire (open) at power plug or power cable
3. Wire disconnection at unit
Trouble
Shooting
1. Check if there is open phase on power from power
supply equipment side
1. Provide correct power supply if
there is power phase is open
2. Check if there is Broken wire (open) at power plug or
power cable (the primary side of circuit breaker)
2. Repair if there is a problem at
power plug or cable
3. Check if there is broken wire (open) at the secondary
side of circuit breaker
*Between C/B〜X63A (PT/CT board)
3. Repair as needed
Controller
Action
F705 Unit stop
02章19-44LX10F11B3TR16-02En.indd2-2602章19-44LX10F11B3TR16-02En.indd2-26 2016/02/0217:17:372016/02/0217:17:37