Mitsubishi Electric FR-E740 SC EC Series User Manual

Parameter Misoperation prevention and parameter setting restriction
FR-E700SC EC 6 - 195
6.17.3 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.
The above parameter can be set when Pr. 160 "User group read selection" = 0.
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
and parameter unit (FR-PU04/FR-PU07), the start signals (STF, STR signals) via external terminals, and
the forward and reverse rotation commands through communication.
Pr. No. Name Initial Value
Setting
Range
Description Parameters referred to
Refer to
Section
78
Reverse rotation prevention
selection
0
0 Both forward and reverse rotations allowed
—
1 Reverse rotation disabled
2 Forward rotation disallowed

Mitsubishi Electric FR-E740 SC EC Series Specifications

General

Brand	Mitsubishi Electric
Model	FR-E740 SC EC Series
Category	Inverter
Language	English