A SERVICE OF

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100
PRELIMINARY
5.2 Troubleshooting Flow Charts
5.2.1 “MAIN VOLT/FREQ NOK”
Start
Is the main
input circuit breaker
(Q1) turned on?
Turn on the main
input circuit breaker
Is the main input
voltage or frequency
out of range?
Calibrate parameter on
EEPROM
(2)
Replace P board or M
board
(3)
N
N
Y
Y
END
END
actual value and LCD
Are the
value the same ?
Is the LCD value zero ?
Check the EEPROM
voltage setting
(2)
Is the Wire #1
(1)
connection OK?
Fix the connection
N
N
Y
Y
Y
N
5 Troubleshooting (continued)
Fig 5.2.1a
Fig 5.2.1b
Note (1): For SU20KX, SU40KX and SU40K models, wire #1 is connected between the P board (CNP7) and FA (CNA9) for main input. (See chap-
ter 1.5.) For SU60KX, SU80KX, SU60K, SU80K, SU60KTV and SU80KTV, wire #1 is connected between the P board (CNP7) and F1 (CNF15) for
main input. (See section 1.5.)
Note (2): To learn about EEPROM parameter settings and calibration, turn to section 3.2.
Note (3): For the location of the NHS-SYS-P and NHS-SYS-M boards, turn to section 1.5. To replace the NHS-SYS-M board, simply remove the
EEPROM chip from an old NHS-SYS-M board and insert it into the new one.
P
M