Reverse Rotation Prevention Selection (Pr. 78) - Mitsubishi Electric FR-A500 Instruction Manual

4.2.35 Reverse rotation prevention selection (Pr. 78)

Pr. 78 "reverse rotation prevention selection"
This function can prevent any reverse rotation fault resulting from the incorrect input of the start signal.
Used for a machine which runs only in one direction, e.g. fan, pump.
(The setting of this function is valid for the PU, external and communication operations.)
Parameter Factory
Number Setting
78
<Setting>
Pr. 78 Setting
0 Both forward and reverse rotations allowed
1 Reverse rotation disallowed
2 Forward rotation disallowed
Setting Range
0 0, 1, 2
Function
Related parameters
Pr. 79 "operation mode selection"
110
PARAMETERS