Omron SYSDRIVE 3G3MV User Manual page 272

Maintenance Operations
Check and correct the setting in n003.
·Input in 2-wire sequence while 3-wire sequence is in effect and vice-versa.
The Inverter will operate in 3-wire sequence according to the RUN, stop, and for-
ward/stop commands if n052 for multi-function input 3 is set to 0. At that time, the
Inverter will not operate if input in 2-wire sequence is ON. On the other hand, the
Inverter in 2-wire sequence will only rotate in the reverse direction if input in 3-wire
sequence is ON.
Check and correct the setting in n052 or change the input method of the RUN com-
mand.
·The Inverter is not in RUN mode.
When the PRGM or LO/RE indicator (red indicator) of the Digital Operator is lit, the
Inverter does not start.
Cancel the RUN command, and by pressing the Mode Key, turn ON the green indica-
tor before restarting the Inverter.
·The value of the frequency reference is too low.
The Inverter will have no output if the frequency reference is below the minimum out-
put frequency in n016.
Set the frequency reference to exceed the minimum output frequency.
·The Inverter is in local mode.
The RUN command can be given to the Inverter in local mode only with the RUN Key
of the Digital Operator. Check the LO/RE indicator. If "Lo" is displayed, the Inverter is
in local mode. Press the Increment Key so that "rE" will be displayed.
If the above operation is not possible, multi-function input will be set to local/remote
selection. In that case, the mode can be switched only through the corresponding
multi-function input terminal. Set the input terminal to OFF so that the Inverter will be
in remote mode.
·The input wiring of the control circuit terminals of the Inverter is incorrect.
The Inverter cannot check the input signal if the input line of the control circuit termi-
nals is incorrectly wired. Use the Digital Operator and check the setting in multi-func-
tion monitor U-96 for the input terminal status.
The default setting for Inverter input is to NPN sequence input, which can be
changed to PNP sequence input. Refer to 2-2-1 Terminal Block and check that the
SW1 settings conform with the actual wiring.
Chapter 8
8-19