Mitsubishi Electric FR-A740-00023 Instruction Manual page 306

Misoperation prevention and parameter
setting restriction
(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, 101, 103, 115, 117", 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.
(2) Disconnected PU detection
• This function detects that the PU (FR-DU07/FR-PU04/FR-PU07) has been disconnected from the inverter for
longer than 1s and causes the inverter to provide an alarm output (E.PUE) and come to an alarm stop.
• When Pr. 75 is set to any of "0, 1, 14, 15, 100, 101, 114, 115", operation is continued if the PU is disconnected.
CAUTION
⋅ When the PU has been disconnected since before power-on, it is not judged as an alarm.
⋅ 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"
(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.
(3) PU stop selection
• In any of the PU operation, external operation and network operation modes, the motor can be stopped by pressing
of the PU.
• When the inverter is stopped by the PU stop function, "
output is not provided.
• When Pr. 75 is set to any of "0 to 3, 100 to 103", deceleration to a stop by
mode.
REMARKS
The motor will also decelerate to a stop (PU stop) when
communication with Pr. 551 PU mode operation command source selection set to "1" (PU mode RS-485 terminals).
296
" is displayed but an alarm is not output. An alarm
is valid only in the PU operation
is input during operation in the PU mode through RS-485