193
Misoperation prevention and parameter setting restriction
4.18 Misoperation prevention and parameter setting restriction
4.18.1 Reset selection/disconnected PU detection/PU stop selection (Pr. 75)
(1) Reset selection
You can select the enable condition of reset function (RES signal, reset command through communication) input.
When
Pr. 75
is set to any of "1, 3, 15, 17", a reset can be input only when the inverter is tripped.
Purpose
Parameter that should be Set
Refer to Page
Limits reset function
Trips when PU is disconnected
Stops from PU
Reset selection/disconnected PU
detection/PU stop selection
Pr. 75
Prevention of parameter rewrite
Parameter write disable selection
Pr. 77
Prevention of reverse rotation of the motor
Reverse rotation prevention selection
Pr. 78
Displays necessary parameters
Display of applied parameters
Pr. 160
Parameter restriction with using
password
Password function
Pr. 296, Pr. 297
Control of parameter write by
communication
EEPROM write selection
Pr. 342
You can select the reset input acceptance, disconnected PU (FR-PU04/FR-PU07) connector detection function and PU
stop function.
Parameter
Number
Name
Initial Value
Setting Range
Description
75
Reset selection/
disconnected PU detection/
PU stop selection
14
0 to 3, 14 to 17
For the initial value, reset always enabled,
without disconnected PU detection, and
with PU stop function.
The above parameter can be set when
Pr. 160 Extended function display selection
= "0".
This parameter allows its setting to be changed during the operation in any operation mode even if "0" (initial value) is set in
Pr. 77 Parameter write
selection
. This setting does not return to the initial value even though the (all) parameter clear is performed.
Pr.
75
Setting
Reset Selection
Disconnected PU Detection
PU Stop Selection
0
Reset input normally enabled
When the PU is disconnected,
operation is continued.
Pressing
decelerates the motor
to a stop only in the PU operation
mode.
1
Reset input is enabled only when the fault
occurs.
2
Reset input normally enabled
When the PU is disconnected, the
inverter trips.
3
Reset input is enabled only when the fault
occurs.
14
(initial value)
Reset input normally enabled
When the PU is disconnected,
operation is continued.
Pressing
decelerates the motor
to a stop in any of the PU, external
and communication operation modes.
15
Reset input is enabled only when the fault
occurs.
16
Reset input normally enabled
When the PU is disconnected, the
inverter trips.
17
Reset input is enabled only when the fault
occurs.
NOTE
When the reset signal (RES) is input during operation, the motor coasts since the inverter being reset shuts off the output.
When reset is performed, cumulative values of electronic thermal O/L relay, and regenerative brake duty are cleared.
The reset key of the PU is only valid when the inverter is tripped, independently of the
Pr. 75
setting.
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