Hitachi WJ C1 Series - Page 397

Chapter 15 Tips/FAQ/Troubleshooting
15-4-5
S8: Torque is not generated
Estimated cause (s) ▶
Exemplar measures to be taken
Page
Inadequate parameters are
used and acceleration torque
is not sufficient.
Set the torque boost or switch to sensorless vector control
and adjust parameters.
9-5-5
9-5-11
The inverter is used for
lowering.
If torque is insufficient in regenerative operation, perform
the following adjustment.
- Increase the deceleration time.
- Set "AVR function selection [A081]
*1
" to "Disable (01)".
- Use a braking resistor or regenerative braking unit.
8-1-6
9-3-1
9-9-6
9-9-8
The load is too heavy.
It may be necessary to review the capacity of both the
motor and inverter.
-
S9: Parameters to be set are not displayed
Estimated cause (s) ▶
Exemplar measures to be taken
Page
Display restriction has been
set.
The display restriction function may be activated. Review
"Display restriction selection [b037]".
If [b037] cannot be changed, the password function may
be working. If that case, cancel the password.
7-2-1
7-2-6
The display is fixed.
When the "Display lock [DISP]" input terminal is ON, keypad
operation cannot be accepted. If that case, turn off the
[DISP] terminal.
7-2-10
S10: Keypad cannot be operated or parameters cannot be set
Estimated cause (s) ▶
Exemplar measures to be taken
Page
The display is fixed.
When the "Display lock [DISP]" input terminal is ON, keypad
operation cannot be accepted. If that case, turn off the
[DISP] terminal.
7-2-10
The inverter is running.
Some parameters cannot be changed during running. If it
cannot be changed, stop the inverter once.
7-1-1
Soft-Lock is activated.
Disable Soft-Lock function.
7-2-5
The setting range of the
parameter, etc. has changed
due to the change of the
inverter mode or load type
setting.
By changing the "Load type selection [b049]" and "Inverter
mode selection [b171]", the setting range of some
parameters are changed and some parameters are hidden.
The current mode setting can be checked on the "Inverter
mode monitor [d060]". If the mode is not intended, change
the mode.
8-1-2
8-1-15
10-3-4
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