MITSUBISHI ELECTRIC FR-S520 - Manual (Page 107)

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2
.10.9 Reverse rotation prevention selection
This function can prevent any reverse rotation fault resulting from the incorrect
input of the start signal.
POINT
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 Name
Factory
Setting
Setting
Range
Remarks
78
Reverse rotation
prevention
selection
0 0, 1, 2 Setting is enabled when Pr. 30 = "1"
<Setting>
Pr. 78 Setting Function
0 Both forward and reverse rotations allowed
1 Reverse rotation disallowed
2 Forward rotation disallowed
2 .10.10 Operation mode selection
Used to select the operation mode of the inverter.
The inverter can be run from the control panel or parameter unit (PU operation),
with external signals (external operation), or by combination of PU operation and
external operation (external/PU combined operation).
The inverter is placed in the external operation mode at power-on (factory setting).
Parameter Name Factory Setting Setting Range
79 Operation mode selection 0 0 to 4, 7, 8