Reverse Rotation Prevention Selection (Pr. 78); Operation Mode Selection (Pr. 79) - Mitsubishi Electric FR-E520 Instruction Manual

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
78
<Setting>
Pr. 78 Setting
0
1
2

4.2.33 Operation mode selection (Pr. 79)

Pr. 79 "operation mode selection"
Used to select the operation mode of the inverter.
The inverter can be run from the operation panel or
parameter unit (PU operation), with external
signals (external operation), or by combination of
PU operation and external operation (external/PU
combined operation).
When power is switched on (factory setting), the
PU operation mode is selected.
Parameter
Number
79
Factory
Setting
0
Function
Both forward and reverse rotations allowed
Reverse rotation disallowed
Forward rotation disallowed
Factory Setting
Setting Range
1 0 to 4, 6 to 8
Related parameters
Pr. 79 "operation mode selection"
Setting
Range
0, 1, 2
Related parameters
Pr. 4 to Pr. 6, Pr. 24 to Pr. 27,
Pr. 232 to Pr. 239
(multi-speed operation)
Pr. 75 "reset selection/disconnected
PU detection/PU stop selection"
Pr. 146 "frequency setting command
selection"
Pr. 180 to Pr. 183
(input terminal function selection)
124
PARAMETERS