Misoperation Prevention And Parameter Setting Restriction; Reset Selection/Disconnected Pu Detection/Pu Stop Selection (Pr. 75) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

4.22 Misoperation prevention and parameter setting restriction

Purpose
Limit reset function
Make alarm stop when PU is disconnected
Stop from PU
Prevention of parameter rewrite
Prevention of reverse rotation of the
motor
Display necessary parameters
Control of parameter write by
communication

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

You can select the reset input acceptance, disconnected PU (FR-DU07/FR-PU04/FR-PU07) connector detection
function and PU stop function.
Parameter
Name
Number
Reset selection/disconnected
75
PU detection/PU stop selection
⋅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.
Enabled only when the protective
1
function is activated
2 Reset input normally enabled.
Enabled only when the protective
3
function is activated
14
(initial Reset input normally enabled.
value)
Enabled only when the protective
15
function is activated
16 Reset input normally enabled.
Enabled only when the protective
17
function is activated
(1) Reset selection
• You can select the operation timing 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 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 and regenerative brake duty is cleared.
⋅ The reset key of the PU is valid only when the protective function is activated, independently of the Pr. 75 setting.
Misoperation prevention and parameter
Parameter that must 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
Setting Range
Value
14 0 to 3, 14 to 17
Disconnected PU Detection
If the PU is disconnected, operation
will be continued.
When the PU is disconnected, the
inverter output is shut off.
If the PU is disconnected, operation
will be continued.
When the PU is disconnected, the
inverter output is shut off.
setting restriction
Refer to Page
Pr. 75
Pr. 77
Pr. 78
Pr. 160, Pr. 172 to Pr. 174
Pr. 342
Description
For the initial value, reset always enabled,
without disconnected PU detection, and
with PU stop function are set.
PU Stop Selection
Pressing decelerates the motor to
a stop only in the PU operation mode.
Pressing decelerates the motor to
a stop in any of the PU, external and
communication operation modes.
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