PARAMETERS
109
Pr. 79
"operation mode selection"
Related parameters
Note:1. The parameters half-tone screened in the parameter list can be set at any
time.
2. If Pr. 77 = "2", the values of Pr. 23, Pr. 66, Pr. 71, Pr. 79, Pr. 80, Pr. 83,
Pr. 84, Pr. 96, Pr. 180 to Pr. 183 and Pr. 190 to Pr. 192 cannot be written
during operation.
Stop operation when changing their parameter settings.
3. By setting "1" in Pr. 77, the following clear operations can be inhibited:
!
Parameter clear
!
Parameter all clear
4.2.32 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 combined, PU, external and
communication operations.)
Parameter
Number
Factory
Setting
Setting
Range
78 0 0, 1, 2
<Setting>
Pr. 78 Setting Function
0
Both forward and reverse
rotations allowed
1 Reverse rotation disallowed
2 Forward rotation disallowed