MITSUBISHI ELECTRIC FR-S520E - Manual (Page 168)

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Parameter unit (FR-PU04) setting
2.17.5 Disconnected PU detection/PU setting lock selection
(n17 )
The parameter number in parentheses is the one for use with the parameter unit (FR-
PU04).
<Setting>
* The monitor display and the are valid.
You can choose the connector disconnection detection function of the
parameter unit (FR-PU04) and the control source of the PU (operation panel,
FR-PU04).
Disconnected PU detection : This function detects that the parameter unit
(FR-PU04) has been disconnected from the
inverter for longer than 1s and causes the
inverter to provide an alarm output (PUE) and
come to an alarm stop. When the PU has been
disconnected since before power-on, it is not
judged as an alarm.
PU setting lock : Control source of operation command,
frequency command and parameter setting is
restricted to the operation panel or parameter
unit (FR-PU04).
Parameter Name
Factory
Setting
Setting
Range
Remarks
n17 (993)
Disconnected PU detection/
PU setting lock
0 0, 1, 10
Setting is enabled when
Pr. 30 = "1"
n17 Setting Disconnected PU Detection PU Setting Lock*
0
Operation is continued as-is if the PU is disconnected
(without disconnected PU detection)
Parameter unit (FR-
PU04) is valid
1
Inverter output is shut off when the PU is disconnected
(with disconnected PU detection)
10
Operation is continued as-is if the PU is disconnected
(without disconnected PU detection) Operation panel is
valid
REMARKS
When RS-485 communication operation is performed through the RS-485 connector, the reset
selection/PU stop selection function is valid but the disconnected PU detection function is
invalid.
CAUTION
Do not reset the inverter while the start signal is being input.
Doing so will cause the inverter to start immediately after a reset, leading to
hazardous conditions.
STOP
RESET