250
Check first when you have troubles
5.5.10 Operation mode is not changed properly
1) Inspection of load
Check that the STF or STR signal is off.
When it is on, the operation mode cannot be changed.
2) Parameter setting
Check the Pr. 79 setting.
When the Pr. 79 Operation mode selection setting is "0" (initial value), the inverter is placed in the
external operation mode at input power-on. At this time, pressing on the operation panel
(press when the parameter unit (FR-PU04/FR-PU07) is used) switches the mode to the PU
operation mode. For other values (1 to 4, 6, 7), the operation mode is limited accordingly.
5.5.11 Operation panel (FR-DU07) display is not operating
Check that the operation panel is connected to the inverter securely.
5.5.12 POWER lamp is not lit
Check that wiring is securely performed and installation is correct.
5.5.13 Parameter write cannot be performed
Make sure that operation is not being performed (signal STF or STR is not ON).
Check Pr. 77 Parameter write selection.
Make sure that you are not attempting to set the parameter in the external operation mode.
Check Pr. 161 Frequency setting/key lock operation selection.
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