Omron SYSDRIVE 3G3FV, User Manual, Page: 227 / 400

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•
Positive or reverse characteristic PID control is possible.
•
Set the characteristic according to the relationship between the Inverter’s output frequency and the
feedback value.
Positive characteristic: The feedback value increases when the Inverter’s output frequency in-
creases.
Negative characteristic: The feedback value increases when the Inverter’s output frequency de-
creases.
Parameter Display name Setting Units Default
Valid access levels
number
p y g
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
b5-10 Output Gain 0.0 to
25.0 Times 1.0 Advanced
Explanation of Settings
•
Use this parameter to set the multiplication ratio of the Inverter’s final output under PID control.
•
The entire PID control amount can be adjusted. For frequency ref PID control, the adjustment
of PID control of the frequency reference can be made.
Parameter Display name Setting Units Default
Valid access levels
number
p y g
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
b5-11 Output Rev Set 0, 1 --- 0 Advanced
Explanation of Settings
Set value Contents
0 Reverse rotation disabled. (If the final output is negative, the output will be limited to 0
and the motor will not rotate in the reverse direction.)
1 Reverse rotation enabled. (If the final output is negative, the motor will rotate according to
the output value.)
•
Set this parameter to enable or disable the motor to rotate in the reverse direction if the Inverter’s final
output under PID control is negative.
The reverse direction means the direction opposite to the direction specified by the run command in-
put. Therefore, if a run command is input for reverse rotation, the motor will rotate in the forward direc-
tion. If a run command is input for forward rotation input, the motor will rotate in the opposite.
•
The parameter is by default set to 0 in consideration of safety. Set this parameter according to the
application.
Note 1. If the parameter is set to 1, the motor will rotate in the reverse rotation when run command for
forward rotation is input. Take necessary safety measure for the prevention of accidents.
Note 2. If parameter b1-04 (Disabling Reverse Operation) is set to 1, the motor will not rotate in the
reverse direction even with the parameter b5-11 set to 1.
D
Feedback Loss Detection for PID Control
This function is used to detect the loss of the feedback signal (e.g., as a result of line disconnection or
short-circuiting) when the feedback voltage drops suddenly.
Parameter Display name Setting Units Default
Valid access levels
number
p y g
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
b5-12 Fb los Det Sel 0 to 2 --- 0 Advanced
Advanced Operation
Chapter 6