108
PARAMETERS
4.2.31 Input filter time constant (Pr. 74)
Pr. 74 "filter time constant"
You can set the input section's internal filter constant for an external voltage or current frequency setting
signal.
z Effective for eliminating noise in the frequency setting circuit.
z Increase the filter time constant if steady operation cannot be performed due to noise. A larger setting
results in lower response. (The time constant can be set between approximately 1ms to 1s with the setting
of 0 to 8. A larger setting results in a larger filter time constant.)
4.2.32 Reset selection/PU disconnection detection/PU stop selection (Pr. 75)
Pr. 75 "reset selection/disconnected PU detection/PU stop selection"
You can select the reset input acceptance, PU (FR-DU04/FR-PU04) connector disconnection detection
function and PU stop function.
z Reset selection : You can select the reset function input timing.
z PU disconnection detection : When it is detected that the PU (FR-DU04/FR-PU04) connector is
disconnected from the inverter for more than 1s, the inverter outputs an
alarm code (E.PUE) and comes to an alarm stop.
z PU stop selection : When an alarm occurs in any operation mode, you can stop the motor from
the PU by pressing the key.
<Setting>
Parameter
Number
Factory
Setting
Setting Range
74 1 0 to 8
Parameter
Number
Factory
Setting
Setting Range
75 14 0 to 3, 14 to 17
Pr. 75
Setting
Reset Selection PU Disconnection Detection PU Stop Selection
0 Reset input normally enabled.
If the PU is disconnected, operation
will be continued.
Pressing the key
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 Reset input normally enabled.
If the PU is disconnected, operation
will be continued.
Pressing the key
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.
STOP
RESET
STOP
RESET
STOP
RESET
