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Troubleshooting
...Check that the STF or STR signal is off.
When it is on, the operation mode cannot be
changed.
......Check the Pr. 79 setting.
When the setting of Pr. 79 "operation mode selection"
is "0", switching input power on places the inverter in
the external operation mode. Press the key to
switch to the PU operation mode. For other settings
(1, 2, 3, 4), the operation mode is limited accordingly.
(For details of Pr. 79, refer to page 75.)
PU
EXT
2. Parameter setting
6.2.8 Operation mode is not changed properly
If the operation mode does not change correctly, check the following:
1. External input signal
6.2.9 Operation mode is not switched to CC-Link operation mode
Check that the inverter and CC-Link dedicated cable are fitted correctly.
(Check for poor contact, cable breakage, etc.)
Check that the station number setting is correct. (Check that the station number
matches the program, does not overlap, and is not outside the range.)
Check that the operation mode switching program is executed.
Check that the operation mode switching program is designed correctly.
6.2.10 Inverter cannot be started in CC-Link operation mode
Check that the inverter starting program is designed correctly.
Check that the inverter starting program is executed.
Check that the inverter is providing output.
6.2.11 Operation panel display is not provided
Make sure that terminals PC-SD are not shorted.
Make sure that the jumper is fitted securely across terminals P<+>-P1.
Check that you are not attempting to make parameter setting outside the setting range.
6.2.12 Parameter write cannot be performed
Check that operation is not being performed (signal STF or STR is not on).
Check that you are not attempting to make parameter setting in the external
operation mode.
Check the setting of Pr. 77 "parameter write inhibit selection".
6.2.13 Motor produces annoying sound
Check the Pr. 72 "PWM frequency selection" setting.
Make sure that the deceleration time is not too short.