Mitsubishi Electronics FR-S500 Disconnected PU detection/PU setting lock selection n17, Setting

Parameter unit (FR-PU04) setting

2.16.5Disconnected PU detection/PU setting lock selection (n17 )

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	Remarks
		Setting	Range
n17 (993)	Disconnected PU detection/	0	0, 1, 10	Setting is enabled when
	PU setting lock			Pr. 30 = "1"

The parameter number in parentheses is the one for use with the parameter unit (FR- PU04).

<Setting>

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-
1	Inverter output is shut off when the PU is disconnected	PU04) is valid
	(with disconnected PU detection)
10	Operation is continued as-is if the PU is disconnected	Operation panel is
	(without disconnected PU detection)	valid

* The monitor display and the RESETSTOP are 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

2

FUNCTIONS

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.

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