172
Misoperation prevention and parameter
setting restriction
4.17 Misoperation prevention and parameter setting restriction
4.17.1 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 a fault occurs.
Purpose
Parameter that must be Set
Refer to
Page
Limit reset function
Trips stop when PU is disconnected
Stop from PU
Reset selection/disconnected
PU detection/PU stop selection
Pr. 75
Prevention of parameter rewrite
Parameter write selection
Pr. 77
Prevention of reverse rotation of the
motor
Reverse rotation prevention
selection
Pr. 78
Display necessary parameters
Display of applied parameters
and user group function
Pr. 160, Pr. 172 to Pr. 174
Control of parameter write by
communication
EEPROM write selection
Pr. 342
You can select the reset input acceptance, disconnected PU (FR-DU07/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 are set.
⋅
The above parameters can be set when
Pr. 160 User group read selection
= "0".
(Refer to page 175)
⋅
The
Pr. 75
value can be set any time. Also, if parameter (all) clear is executed, this setting will not return to the initial value.
Pr. 75
Setting
Reset Selection
Disconnected PU Detection
PU Stop Selection
0
Reset input normally enabled.
If the PU is disconnected, operation
will be continued.
Pressing
decelerates the motor to
a stop only in the PU operation mode.
1
Reset input enabled only when the
protective function is activated
2
Reset input normally enabled.
When the PU is disconnected, the
inverter output is shut off.
3
Reset input enabled only when the
protective function is activated
14
(initial
value)
Reset input normally enabled.
If the PU is disconnected, operation
will be continued.
Pressing
decelerates the motor to
a stop in any of the PU, external and
communication operation modes.
15
Reset input enabled only when the
protective function is activated
16
Reset input normally enabled.
When the PU is disconnected, the
inverter output is shut off.
17
Reset input enabled only when the
protective function is activated
CAUTION
⋅
When the reset signal (RES) is input during operation, the motor coasts since the inverter being reset shuts off the output.
Also, the cumulative value of the electronic thermal relay function is cleared.
⋅
The reset key of the PU is valid only when a fault occurs, independently of the
Pr. 75
setting.