Reverse Rotation Prevention Selection (Pr. 78) - Mitsubishi Electric FR-A700 Instruction Manual

Parameter
6.21.3

Reverse rotation prevention selection (Pr. 78)

In some applications (fans, pumps) it is necessary to ensure that the motor cannot be reversed.
This can be achieved with Pr. 78.
Pr.
Name
No.
Reverse rotation
78
prevention selection
Set this parameter when you want to limit the motor rotation to only one direction.
This parameter is valid for all of the reverse rotation and forward rotation keys of the operation
panel (FR-DU07), parameter unit (FR-PU04/FR-PU07), signals (STF, STR signals) via external
terminals, and the forward and reverse rotation commands through communication.
FR-A700 EC
Initial Setting
Description
Value Range
Both forward and reverse rotations
0
allowed
0
1 Reverse rotation disabled
2 Forward rotation disallowed
Misoperation prevention and parameter setting restriction
Refer to
Parameters referred to
Section
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