Misoperation Prevention And Parameter Setting Restriction; Reset Selection/Disconnected Pu Detection/Pu Stop Selection (Pr. 75) - Mitsubishi Electric FR-E720-0.1 K Instruction Manual

4.18 Misoperation prevention and parameter setting restriction

Purpose
Limits reset function
Trips stop when PU is disconnected
Stops from PU
Prevention of parameter rewrite
Prevention of reverse rotation of the motor
Displays necessary parameters
Control of parameter write by
communication

4.18.1 Reset selection/disconnected PU detection/PU stop selection (Pr. 75)

You can select the reset input acceptance, disconnected PU (FR-PU04/FR-PU07) connector detection function and PU
stop function.
Parameter
Name
Number
Reset selection/
75 disconnected PU detection/
PU stop selection
The above parameters can be set when Pr. 160 User group read selection = "0". (Refer to page 183)
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
Reset Selection
Setting
0 Reset input normally enabled
Reset input is enabled only when the fault
1
occurs.
2 Reset input normally enabled
Reset input is enabled only when the fault
3
occurs.
14
Reset input normally enabled
(initial value)
Reset input is enabled only when the fault
15
occurs.
16 Reset input normally enabled
Reset input is enabled only when the fault
17
occurs.
(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.
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, 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.
(2) Disconnected PU detection
This function detects that the PU (FR-PU04/FR-PU07) has been disconnected from the inverter for longer than 1s and
causes the inverter to provide a fault output (E.PUE) and come to trip.
When Pr. 75 is set to any of "0, 1, 14, 15", operation is continued if the PU is disconnected.
REMARKS
When the PU has been disconnected since before power-ON, it is not judged as a fault.
To make a restart, confirm that the PU is connected and then reset the inverter.
The motor decelerates to a stop when the PU is disconnected during PU Jog operation with Pr. 75 set to any of "0, 1, 14, 15"
(which selects operation is continued if the PU is disconnected).
When RS-485 communication operation is performed through the PU connector, the reset selection/PU stop selection function
is valid but the disconnected PU detection function is invalid.

Misoperation prevention and parameter setting restriction

Parameter that should be Set
Reset selection/disconnected PU
detection/PU stop selection
Parameter write disable selection
Reverse rotation prevention selection
Display of applied parameters and
user group function
EEPROM write selection
Initial Value
14
Disconnected PU Detection
If the PU is disconnected, operation
will be continued.
When the PU is disconnected, the
inverter trips.
If the PU is disconnected, operation
will be continued.
When the PU is disconnected, the
inverter trips.
Pr. 75
Pr. 77
Pr. 78
Pr. 160,
Pr. 172 to Pr. 174
Pr. 342
Setting Range
For the initial value, reset always enabled,
0 to 3, 14 to 17 without disconnected PU detection, and
with PU stop function are set.
Pressing
to a stop only in the PU operation
mode.
Pressing
to a stop in any of the PU, External
and Network operation modes.
Refer to Page
179
182
183
183
210
Description
PU Stop Selection
decelerates the motor
decelerates the motor
179
4