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Misoperation prevention and parameter
setting restriction
(4) How to restart the motor stopped by
stop (PS) reset method)
Speed
Operation
panel
STF
ON
(STR) OFF
Stop/restart example for external operation
• The motor can be restarted by making a reset using a power supply reset or RES signal.
CAUTION
If Pr. 250 Stop selection is set to other than "9999" to select coasting to a stop, the motor will not be coasted to a stop but
decelerated to a stop by the PU stop function during external operation.
To restart after the inverter is stopped by PU with PLC function, reset using a power supply rest or RES signal. (sending stop
signal from GX Developer, can also perform the reset.)
Do not reset the inverter with the start signal ON. Doing so will cause the inverter to start immediately after a
reset, leading to hazardous conditions.
(5) Reset limit
• Setting can be made for the FR-A720-02880 (FR-A740-01440) or more.
• You can set Pr. 75 to disable reset operation until the thermal cumulative amount reaches 0 when a thermal trip
(THM, THT) or an overcurrent trip (OC1 to OC3) occurs consecutively twice.
• When Pr. 75 = "100 to 103, 114 to 117", reset limit is valid.
REMARKS
When the power-on reset (no control power is supplied) is made, the thermal cumulative amount is cleared.
Parameters referred to
Pr. 250 Stop selection
Refer to page 217
314
Time
Key
Key
CAUTION
input from the PU in External operation mode (PU
(a) When operation panel (FR- DU07) is used
1)After the motor has decelerated to a stop, turn OFF the
STF or STR signal.
2)Press
three times.
(When Pr. 79 Operation mode selection = "0 (initial setting)
or 6"••••••(
cancel)
Pressing it once cancels
mode selection = "2, 3, or 7."
3)Turn ON the STF or STR signal.
(b) Connection of the parameter unit (FR-PU04/FR-PU07)
1)After the motor has decelerated to a stop, turn OFF the
STF or STR signal.
2)Press
.••••••(
EXT
3)Turn ON the STF or STR signal.
when Pr. 79 Operation
canceled)
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